JP7051638B2 - Escitalopram pharmaceutical composition - Google Patents

Escitalopram pharmaceutical composition Download PDF

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JP7051638B2
JP7051638B2 JP2018151122A JP2018151122A JP7051638B2 JP 7051638 B2 JP7051638 B2 JP 7051638B2 JP 2018151122 A JP2018151122 A JP 2018151122A JP 2018151122 A JP2018151122 A JP 2018151122A JP 7051638 B2 JP7051638 B2 JP 7051638B2
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escitalopram
particles
tablets
test
coating
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正和 時任
達哉 本庄
達郎 中村
京介 高橋
豊 奥田
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Towa Pharmaceutical Co Ltd
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/335Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
    • A61K31/34Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having five-membered rings with one oxygen as the only ring hetero atom, e.g. isosorbide
    • A61K31/343Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having five-membered rings with one oxygen as the only ring hetero atom, e.g. isosorbide condensed with a carbocyclic ring, e.g. coumaran, bufuralol, befunolol, clobenfurol, amiodarone
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/02Inorganic compounds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/06Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
    • A61K47/26Carbohydrates, e.g. sugar alcohols, amino sugars, nucleic acids, mono-, di- or oligo-saccharides; Derivatives thereof, e.g. polysorbates, sorbitan fatty acid esters or glycyrrhizin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/30Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
    • A61K47/36Polysaccharides; Derivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
    • A61K47/38Cellulose; Derivatives thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/14Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/16Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/20Pills, tablets, discs, rods
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00Drugs for disorders of the nervous system
    • A61P25/24Antidepressants
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D307/00Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/77Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D307/87Benzo [c] furans; Hydrogenated benzo [c] furans

Description

本発明は、医薬組成物の技術分野に属する。本発明は、エスシタロプラムまたはその塩を有効成分として含有する医薬組成物に関するものであって、医薬品として保存安定性が担保された医薬組成物に関するものである。 The present invention belongs to the technical field of pharmaceutical compositions. The present invention relates to a pharmaceutical composition containing escitalopram or a salt thereof as an active ingredient, and relates to a pharmaceutical composition whose storage stability is guaranteed as a pharmaceutical product.

エスシタロプラムは、シタロプラムのS体の一般名であり、化学名:(S)-1-[3-(ジメチルアミノ)プロピル]-1-(4-フルオロフェニル)-1,3-ジヒドロイソベンゾフラン-5-カルボニトリル)という化合物である。このものは、選択的セロトニン再取り込み阻害作用 (SSRI) を有し、そのシュウ酸塩(下記構造式参照)は、抗うつ薬としてレクサプロ(登録商標、Lexapro)などの商品名で市販されている。 Escitalopram is a general name for the S form of citalopram, and has a chemical name: (S) -1- [3- (dimethylamino) propyl] -1- (4-fluorophenyl) -1,3-dihydroisobenzofuran-5. -Carbonitrile). It has a selective serotonin reuptake inhibitory effect (SSRI), and its oxalate (see structural formula below) is commercially available as an antidepressant under trade names such as Lexapro (registered trademark, Lexapro). ..

Figure 0007051638000001
Figure 0007051638000001

エスシタロプラムの医薬組成物に関する発明としては、例えば、特許文献1および2を挙げることができる。
特許文献1には、高い生物学的利用性を有し、製造時に生じる不純物が最小にされたシュウ酸エスシタロプラムのための医薬剤形を開発することを課題とし、その課題を、100μm未満の平均粒径を有するシュウ酸エスシタロプラムと、少なくとも1種の充填剤を含む粒状物とすることにより解決した発明が記載されている。特許文献1には、色素として酸化チタンの使用が好ましいことが記載されているが(段落[0037]参照)、それ以外の具体的な色素は実施例を含め、特に挙げられていない。また、膜形成剤も医薬分野で通常使用しうる種々のものが挙げられ、セルロース誘導体も挙げられているが、かかる膜形成剤は、素錠をコーティングするためのものである。
Examples of the invention relating to the pharmaceutical composition of escitalopram include Patent Documents 1 and 2.
The subject of Patent Document 1 is to develop a pharmaceutical dosage form for escitalopram oxalate, which has high bioavailability and minimizes impurities generated during production, and the subject is an average of less than 100 μm. Described is an invention solved by using escitalopram oxalate having a particle size and granules containing at least one filler. Patent Document 1 describes that the use of titanium oxide as a dye is preferable (see paragraph [0037]), but other specific dyes, including examples, are not particularly mentioned. Further, various membrane-forming agents that can be usually used in the pharmaceutical field are mentioned, and cellulose derivatives are also mentioned, but such membrane-forming agents are for coating uncoated tablets.

特許文献2には、直接圧縮するのに適したエスシタロプラムシュウ酸塩の大きな結晶性粒子とその製造方法が記載されている。そして、かかる結晶性粒子は、平均粒子径(D50)で少なくとも40μmの粒度を有する。 Patent Document 2 describes large crystalline particles of escitalopram oxalate suitable for direct compression and a method for producing the same. The crystalline particles have an average particle size (D 50 ) and a particle size of at least 40 μm.

一方、特許文献3は、賦形剤と混合した薬物をエチルセルロースで被覆してなる薬物含有顆粒を含む、苦味などの不快な味を低減した口腔内崩壊錠剤を開示する。しかし、エスシタロプラムの医薬組成物に関する記載はない。 On the other hand, Patent Document 3 discloses an orally disintegrating tablet containing drug-containing granules obtained by coating a drug mixed with an excipient with ethyl cellulose to reduce unpleasant taste such as bitterness. However, there is no description about the pharmaceutical composition of escitalopram.

特表2011-520798号公報Japanese Patent Publication No. 2011-520798 特表2005-525993号公報Special Table 2005-525993 特開2005-60309号公報Japanese Unexamined Patent Publication No. 2005-60309.

本発明は、エスシタロプラムまたはその塩を有効成分として含有する、医薬品として保存安定性(光安定性、熱安定性)が担保された新規な医薬組成物を提供することを主な課題とする。 The main object of the present invention is to provide a novel pharmaceutical composition containing escitalopram or a salt thereof as an active ingredient and guaranteed storage stability (photostability, thermal stability) as a pharmaceutical product.

本発明者らは、鋭意検討を重ねた結果、酸化鉄をエスシタロプラムの医薬組成物に含めること、また、エスシタロプラムの平均粒子径(D50)を40μm以下とし、そのエスシタロプラム粒子とマンニトールとを含む混合物を造粒することにより、上記課題を解決しうることを見出し、本発明を完成した。さらには、エスシタロプラムと賦形剤とを含む核粒子をエチルセルロースで被覆することによっても上記課題を解決しうることを見出し、本発明を完成した。 As a result of diligent studies, the present inventors have included iron oxide in the pharmaceutical composition of escitalopram, and made the average particle size ( D50 ) of escitalopram 40 μm or less, and a mixture containing the escitalopram particles and mannitol. The present invention has been completed by finding that the above-mentioned problems can be solved by granulating the particles. Furthermore, they have found that the above problems can be solved by coating nuclear particles containing escitalopram and an excipient with ethyl cellulose, and have completed the present invention.

本発明としては、例えば、下記を挙げることができる。 Examples of the present invention include the following.

[1]エスシタロプラムまたはその塩と酸化鉄とを含むことを特徴とする、医薬組成物。
[2]酸化鉄が、黄色三二酸化鉄、三二酸化鉄である、上記[1]に記載の医薬組成物。
[3]塩がシュウ酸塩である、上記[1]または[2]に記載の医薬組成物。
[4]前記エスシタロプラムまたはその塩が、40μm以下の平均粒子径D50を有し、かつ、D-マンニトールを含む顆粒内に含有されていることを特徴とする、上記[1]~[3]のいずれか一項に記載の医薬組成物。
[5]前記エスシタロプラムまたはその塩と賦形剤とを含む核粒子の外側に、エチルセルロースを含む被覆層を有する顆粒を含むことを特徴とする、上記[1]~[4]のいずれか一項に記載の医薬組成物。
[6]前記賦形剤が、D-マンニトールまたは結晶セルロースである、上記[5]に記載の医薬組成物。
[7]医薬組成物が錠剤である、上記[1]~[6]のいずれか一項に記載の医薬組成物。
[1] A pharmaceutical composition comprising escitalopram or a salt thereof and iron oxide.
[2] The pharmaceutical composition according to the above [1], wherein the iron oxide is yellow iron sesquioxide and iron sesquioxide.
[3] The pharmaceutical composition according to the above [1] or [2], wherein the salt is oxalate.
[4] The above-mentioned [1] to [3], wherein the escitalopram or a salt thereof has an average particle size D 50 of 40 μm or less and is contained in granules containing D-mannitol. The pharmaceutical composition according to any one of the above.
[5] Any one of the above [1] to [4], which comprises granules having a coating layer containing ethyl cellulose on the outside of the nuclear particles containing the escitalopram or a salt thereof and an excipient. The pharmaceutical composition according to.
[6] The pharmaceutical composition according to the above [5], wherein the excipient is D-mannitol or crystalline cellulose.
[7] The pharmaceutical composition according to any one of the above [1] to [6], wherein the pharmaceutical composition is a tablet.

[8]平均粒子径D50が40μm以下のエスシタロプラムまたはその塩の粒子とD-マンニトールとを含む混合物を造粒する工程を含むことを特徴とする、医薬組成物の製法。 [8] A method for producing a pharmaceutical composition, which comprises a step of granulating a mixture containing particles of escitalopram or a salt thereof having an average particle diameter D 50 of 40 μm or less and D-mannitol.

[9]エスシタロプラムまたはその塩と賦形剤とを含む核粒子の外側に、エチルセルロースを含む被覆層を有することを特徴とする、顆粒。
[10]賦形剤が、D-マンニトールまたは結晶セルロースである、上記[9]に記載の顆粒。
[9] Granules comprising a coating layer containing ethyl cellulose on the outside of nuclear particles containing escitalopram or a salt thereof and an excipient.
[10] The granule according to the above [9], wherein the excipient is D-mannitol or crystalline cellulose.

本発明によれば、エスシタロプラムまたはその塩を有効成分として含有する医薬組成物において、医薬品としての保存安定性(光安定性、熱安定性)を担保することができる。
According to the present invention, in a pharmaceutical composition containing escitalopram or a salt thereof as an active ingredient, storage stability (photostability, thermal stability) as a pharmaceutical product can be ensured.

錠剤の熱安定性を示す実験結果を表す。縦軸は、総類縁物質の生成量(%)を、横軸は、核粒子の量に対するエチルセルロースの量(%)を、それぞれ示す。黒丸ラインは、後述する表9の処方(マンニトール含有)から得られた錠剤の結果を、黒三角ラインは、後述する表11の処方(結晶セルロース含有)から得られた錠剤の結果を、黒菱形ラインは、後述する表13の処方(乳糖含有)から得られた錠剤の結果を、それぞれ示す。The experimental results showing the thermal stability of tablets are shown. The vertical axis shows the amount of total related substances produced (%), and the horizontal axis shows the amount of ethyl cellulose (%) with respect to the amount of nuclear particles. The black circle line is the result of the tablet obtained from the formulation (containing mannitol) in Table 9 described later, and the black triangle line is the result of the tablet obtained from the formulation (containing crystalline cellulose) in Table 11 described later. Lines show the results of tablets obtained from the formulations (containing lactose) in Table 13 below, respectively.

1 本発明の医薬組成物
1.1 エスシタロプラム
本発明の医薬組成物(以下、「本発明組成物」という。)は、エスシタロプラムまたはその塩を有効成分として含有する。
本発明に係るエスシタロプラムまたはその塩(以下、これらを併せて単に「エスシタロプラム」ともいう。)は、公知の化合物であって、容易に製造することができ、また入手することができる。当該エスシタロプラムは、粒子であっても、また結晶多形のいずれの結晶形であってもよい。
1. Pharmaceutical composition of the present invention 1.1 Escitalopram The pharmaceutical composition of the present invention (hereinafter referred to as "the composition of the present invention") contains escitalopram or a salt thereof as an active ingredient.
The escitalopram or a salt thereof according to the present invention (hereinafter, these are also simply referred to as "escitalopram") is a known compound and can be easily produced and obtained. The escitalopram may be a particle or a polymorphic crystal form.

エスシタロプラムの塩としては、医薬上許容される酸付加塩であれば特に制限されず、有機酸との塩、無機酸との塩が挙げられる。有機酸との塩としては、例えば、シュウ酸、酢酸、クエン酸、酒石酸、マレイン酸、コハク酸、フマル酸、p-トルエンスルホン酸、ベンゼンスルホン酸、メタンスルホン酸との塩を挙げることができる。無機酸との塩としては、例えば、塩酸、臭化水素酸、ヨウ化水素酸、硝酸、硫酸、リン酸との塩を挙げることができる。この中、シュウ酸との塩が好ましい。当該塩には、水和物や溶媒和物も含まれる。 The salt of escitaloplum is not particularly limited as long as it is a pharmaceutically acceptable acid addition salt, and examples thereof include a salt with an organic acid and a salt with an inorganic acid. Examples of the salt with the organic acid include salts with oxalic acid, acetic acid, citric acid, tartaric acid, maleic acid, succinic acid, fumaric acid, p-toluenesulfonic acid, benzenesulfonic acid and methanesulfonic acid. .. Examples of the salt with the inorganic acid include salts with hydrochloric acid, hydrobromic acid, hydroiodide, nitric acid, sulfuric acid, and phosphoric acid. Of these, a salt with oxalic acid is preferable. The salt also includes hydrates and solvates.

本発明に係るエスシタロプラムは、40μm以下または5~40μmの範囲内の平均粒子径を有することが好ましく、10~40μmの範囲内の平均粒子径を有することがより好ましい。ここで「平均粒子径」とは、体積平均粒子径であって、レーザー回折法で測定したときに、小さい方からの累積分布が50%となる粒子径(D50、メディアン径)をいう。 The escitalopram according to the present invention preferably has an average particle size in the range of 40 μm or less or 5 to 40 μm, and more preferably has an average particle size in the range of 10 to 40 μm. Here, the "average particle diameter" is a volume average particle diameter, and refers to a particle diameter ( D50 , median diameter) in which the cumulative distribution from the smaller one is 50% when measured by a laser diffraction method.

本発明組成物中における単位形態(製剤)あたりのエスシタロプラムの含有量としては、剤型などによって異なるが、エスシタロプラムの量として、1~50mgの範囲内が適当であり、5~20mgの範囲内が好ましい。 The content of escitalopram per unit form (formulation) in the composition of the present invention varies depending on the dosage form and the like, but the amount of escitalopram is appropriately in the range of 1 to 50 mg, and in the range of 5 to 20 mg. preferable.

1.2 酸化鉄を含む本発明組成物
本発明組成物は、酸化鉄を含むことが好ましい。酸化鉄を含めることにより、特に光安定性の向上を図ることができる。
上記酸化鉄としては、医薬上許容されるものであれば特に制限されないが、例えば、黄色三二酸化鉄、三二酸化鉄、褐色酸化鉄、黒酸化鉄を挙げることができる。この中、黄色三二酸化鉄、三二酸化鉄が好ましい。
1.2 Composition of the present invention containing iron oxide The composition of the present invention preferably contains iron oxide. By including iron oxide, it is possible to improve the light stability in particular.
The iron oxide is not particularly limited as long as it is pharmaceutically acceptable, and examples thereof include yellow iron sesquioxide, iron sesquioxide, brown iron oxide, and black iron oxide. Of these, yellow iron sesquioxide and iron sesquioxide are preferable.

本発明組成物中における酸化鉄の含有量としては、エスシタロプラムの含有量、酸化鉄の種類、剤型などによって異なるが、0.01~15質量%の範囲内が適当であり、0.05~10質量%の範囲内が好ましく、0.1~5質量%の範囲内がより好ましい。0.01質量%未満であると、保存安定性が十分に得られないおそれがある。15質量%を超えると、粉体物性の悪化や色むらのおそれがある。 The content of iron oxide in the composition of the present invention varies depending on the content of escitalopram, the type of iron oxide, the dosage form, etc., but is appropriately in the range of 0.01 to 15% by mass, and is 0.05 to 0.05. The range of 10% by mass is preferable, and the range of 0.1 to 5% by mass is more preferable. If it is less than 0.01% by mass, storage stability may not be sufficiently obtained. If it exceeds 15% by mass, there is a risk of deterioration of powder physical properties and color unevenness.

1.3 単位形態と添加剤
本発明組成物の単位形態(製剤)としては、例えば、錠剤、カプセル剤、顆粒剤、細粒剤、散剤を挙げることができる。この中、錠剤が好ましく、かかる錠剤としては、例えば、普通錠、フィルムコーティング錠、糖衣錠、多層錠、腸溶錠、マトリックス錠、口腔内崩壊錠、徐放性錠剤、分散錠、咀嚼錠、舌下錠、トローチ、チュアブル錠を挙げることができる。なお、錠剤の硬度は、特に制限されないが、例えば、35~130Nとすることが好ましい。
1.3 Unit forms and additives Examples of the unit form (form) of the composition of the present invention include tablets, capsules, granules, fine granules and powders. Among these, tablets are preferable, and examples of such tablets include ordinary tablets, film-coated tablets, sugar-coated tablets, multi-layer tablets, enteric-coated tablets, matrix tablets, orally disintegrating tablets, sustained-release tablets, dispersion tablets, chewing tablets, and tongue. Examples include lower tablets, troches, and chewable tablets. The hardness of the tablet is not particularly limited, but is preferably 35 to 130 N, for example.

本発明組成物には、その剤型および必要に応じて、前述の酸化鉄以外に、医薬上許容される添加剤が含まれる。かかる添加剤としては、特に制限されないが、例えば、賦形剤、崩壊剤ないし崩壊促進剤、結合剤、滑沢剤ないし流動化剤(付着防止剤)、コーティング剤、可塑剤、着色剤、矯味剤、保存剤、分散剤、香料を挙げることができる。本発明組成物は、剤型等に応じて、これらを適宜適量有することができる。 The composition of the present invention contains a pharmaceutically acceptable additive in addition to the dosage form and, if necessary, the above-mentioned iron oxide. Such additives are not particularly limited, but are, for example, excipients, disintegrants or disintegrants, binders, lubricants or fluidizers (anti-adhesion agents), coating agents, plasticizers, colorants, and flavors. Examples include agents, preservatives, dispersants and fragrances. The composition of the present invention may have an appropriate amount of these depending on the dosage form and the like.

上記添加剤の具体例としては、D-マンニトール、乳糖、結晶セルロース、トウモロコシデンプン、カンテン、ゼラチン、沈降炭酸カルシウム、リン酸水素カルシウム、白糖などの賦形剤;カルボキシメチルセルロース、カルボキシメチルセルロースカルシウム、低置換度ヒドロキシプロピルセルロース、クロスカルメロースナトリウム、カルボキシメチルスターチナトリウム、炭酸カルシウム、炭酸ナトリウム、トウモロコシデンプン、カルメロースカルシウム、クロスポビドンなどの崩壊剤ないし崩壊促進剤;カルボキシメチルセルロースナトリウム、メチルセルロース、ヒプロメロース、ゼラチン、ポリビニルピロリドン、ポリビニルアルコール、ポビドンなどの結合剤;コロイド状のシリカ、タルク、ステアリン酸マグネシウム、ステアリン酸カルシウム、ステアリン酸、含水二酸化ケイ素、軽質無水ケイ酸、マクロゴールなどの滑沢剤ないし流動化剤;メチルセルロース、エチルセルロース、ヒプロメロース、ヒドロキシプロピルセルロース、ヒドロキシエチルセルロース、カルボキシメチルセルロースナトリウム、酢酸フタル酸セルロース、フタル酸ヒドロキシプロピルメチルセルロース、ポリアクリレートおよびポリメタクリレート(オイドラギッド(登録商標))、ポリビニルピロリドン、酢酸フタル酸ポリビニル、セラックなどのコーティング剤;ポリエチレングリコール、トリアチン、グリセリン脂肪酸エステル、流動パラフィンなどの可塑剤;酸化チタンなどの着色剤;アスパルテーム、サッカリンなどの矯味剤を挙げることができる。 Specific examples of the above additives include excipients such as D-mannitol, lactose, crystalline cellulose, corn starch, canten, gelatin, precipitated calcium carbonate, calcium hydrogenphosphate, sucrose; carboxymethyl cellulose, carboxymethyl cellulose calcium, low substitution. Disintegrants or disintegrants such as hydroxypropyl cellulose, croscarmellose sodium, carboxymethyl starch sodium, calcium carbonate, sodium carbonate, corn starch, carmellose calcium, crospovidone; carboxymethyl cellulose sodium, methyl cellulose, hypromellose, gelatin, polyvinyl Excipients such as pyrrolidone, polyvinyl alcohol, povidone; lubricants or fluidizers such as colloidal silica, talc, magnesium stearate, calcium stearate, stearic acid, hydrous silicon dioxide, light anhydrous silicic acid, macrogol; methylcellulose , Ethyl cellulose, hypromellose, hydroxypropyl cellulose, hydroxyethyl cellulose, sodium carboxymethyl cellulose, cellulose acetate, hydroxypropyl methyl phthalate, polyacrylate and polymethacrylate (Eudragid®), polyvinylpyrrolidone, polyvinyl acetate phthalate, cellac, etc. Coating agents; plasticizers such as polyethylene glycol, triatin, glycerin fatty acid ester, liquid paraffin; colorants such as titanium oxide; flavoring agents such as aspartame and saccharin.

1.4 その他
本発明組成物が錠剤の場合、40℃相対湿度75%の開放条件下において、1カ月保存した後のエスシタロプラム総類縁物質が0.2重量%以下であるものが好ましい。0.15重量%以下であるものがより好ましい。0.1重量%以下であるものが更に好ましい。
1.4 Others When the composition of the present invention is a tablet, it is preferable that the total escitalopram-related substance after storage for 1 month under open conditions at 40 ° C. and 75% relative humidity is 0.2% by weight or less. It is more preferably 0.15% by weight or less. It is more preferably 0.1% by weight or less.

2 本発明組成物の製法
本発明組成物は、採用する剤型に応じて、常法により製造することができる。
例えば、錠剤は、賦形剤、崩壊剤等を加えて粉末混合物を作り、これに着色剤等を分散させた分散液を加えて造粒(例えば、湿式造粒)して顆粒化もしくはスラグ化し、乾燥・整粒し、次いで賦形剤や崩壊剤、滑沢剤等を加えた後、打錠(圧縮)することにより製造することができる。造粒は、乾式造粒でもよい。
2 Method for producing the composition of the present invention The composition of the present invention can be produced by a conventional method according to the dosage form to be adopted.
For example, for tablets, excipients, disintegrants, etc. are added to make a powder mixture, and a dispersion liquid in which a colorant, etc. is dispersed is added to granulate (for example, wet granulation) to granulate or slag. It can be manufactured by drying and sizing, then adding excipients, disintegrants, lubricants, etc., and then tableting (compressing). The granulation may be dry granulation.

本発明組成物(錠剤)の製法においては、平均粒子径が40μm以下または5~40μmの範囲内のエスシタロプラム粒子とマンニトールとを含む混合物を造粒する工程を含むことが好ましい。かかる製法におけるエスシタロプラム粒子の平均粒子径は、10~40μmの範囲内がより好ましい。造粒は、湿式造粒、乾式造粒のいずれでもあってもよいが、湿式造粒が好ましい。
当該製法により製造された本発明組成物は、特に光安定性の向上に優れる。
In the method for producing the composition (tablet) of the present invention, it is preferable to include a step of granulating a mixture containing escitalopram particles and mannitol having an average particle size of 40 μm or less or 5 to 40 μm. The average particle size of the escitalopram particles in such a production method is more preferably in the range of 10 to 40 μm. The granulation may be either wet granulation or dry granulation, but wet granulation is preferable.
The composition of the present invention produced by this production method is particularly excellent in improving photostability.

また、本発明組成物(錠剤)は、エスシタロプラムと賦形剤とを含む核粒子の外側にエチルセルロースを含む被覆層を有する顆粒を用いて製造することが好ましい。当該賦形剤としては、前記と同様のものを挙げることができるが、D-マンニトールや結晶セルロースが好ましい。かかる製法により製造された本発明組成物は、特に熱安定性の向上に優れる。 Further, the composition (tablet) of the present invention is preferably produced using granules having a coating layer containing ethyl cellulose on the outside of nuclear particles containing escitalopram and an excipient. Examples of the excipient include the same as above, but D-mannitol and crystalline cellulose are preferable. The composition of the present invention produced by such a production method is particularly excellent in improving thermal stability.

上記顆粒は、常法により製造することができる。具体的には、例えば、各配合成分を混合し、造粒(例えば、湿式造粒)し、整粒・乾燥して当該核粒子を作製し、その核粒子を、エチルセルロースを含む被覆剤で常法により被覆することにより製造することができる。当該核粒子とエチルセルロースを含む被覆層との間に中間被覆層を有していてもよい。
当該核粒子には、酸化鉄などを含めることができる。また、エチルセルロースを含む被覆層には、タルク、酸化鉄などを含めることができる。
The granules can be produced by a conventional method. Specifically, for example, each compounding component is mixed, granulated (for example, wet granulation), granulated and dried to prepare the nuclear particles, and the nuclear particles are usually coated with a coating agent containing ethyl cellulose. It can be manufactured by coating by the method. An intermediate coating layer may be provided between the nuclear particles and the coating layer containing ethyl cellulose.
The nuclear particles may include iron oxide and the like. Further, the coating layer containing ethyl cellulose may contain talc, iron oxide and the like.

当該核粒子およびエチルセルロースを含む被覆層を有する上記顆粒と、賦形剤、滑沢剤等とを加え混合した後、常法により打錠(圧縮)することにより、本発明組成物(錠剤)を製造することができる。 The composition (tablet) of the present invention is obtained by adding and mixing the above-mentioned granules having a coating layer containing the nuclear particles and ethyl cellulose with an excipient, a lubricant and the like, and then tableting (compressing) by a conventional method. Can be manufactured.

さらに、本発明組成物(錠剤)は、必要に応じて、錠剤表面を被覆剤でフィルムコーティングすることができ、また糖類で糖衣することもできる。かかるフィルムコーティングで使用しうる被覆剤としては、例えば、ヒプロメロース、ヒドロキシプロピルセルロース、エチルセルロース、ポリアクリレートおよびポリメタクリレート(オイドラギッド(登録商標))を挙げることができる。 Further, the composition (tablet) of the present invention can be film-coated with a coating agent on the tablet surface, or can be sugar-coated with a saccharide, if necessary. Examples of the coating agent that can be used in such a film coating include hypromellose, hydroxypropyl cellulose, ethyl cellulose, polyacrylate and polymethacrylate (Eudragid®).

本発明組成物は、剤型、エスシタロプラムの含有量、患者の状態、体重、年齢等によって異なるが、例えば、1日1回~数回または1日~数日間の間隔でヒトなどに、例えば抗うつ剤として投与することができる。 The composition of the present invention varies depending on the dosage form, the content of escitalopram, the condition of the patient, the body weight, the age, etc. It can be administered as a depressant.

以下に実施例や試験例などを掲げて本発明を説明するが、本発明はこれら実施例により何ら限定されるものではない。 Hereinafter, the present invention will be described with reference to Examples and Test Examples, but the present invention is not limited to these Examples.

<安定性試験>
(1)光安定性試験
光安定性試験は、ATLAS社製の光安定性試験装置(型番:SUNTEST XLS+)を用いて、総照度120万lx(ルクス)・hrの照射条件で行った。
<Stability test>
(1) Optical stability test The optical stability test was carried out using an optical stability test device (model number: SUNTEST XLS +) manufactured by ATLAS under irradiation conditions of a total illuminance of 1.2 million lux (lux) and hr.

(2)熱安定性試験
熱安定性試験は、40℃相対湿度75%RHの開放条件下において、1ヶ月間保存することにより行った。
(2) Thermal stability test The thermal stability test was carried out by storing for 1 month under open conditions of 40 ° C. and 75% RH relative humidity.

(3)類縁物質の測定方法
試料溶液の各類縁物質(類縁1、類縁2)および総類縁物質の量は、HPLC法で測定した。そして、各類縁物質または総類縁物質の量を、HPLCのエスシタロプラムに由来する全ピーク面積中の各類縁物質または総類縁物質のピーク面積の割合(%)で表した。本測定に使用した試料溶液、およびHPLCの測定条件は、以下の通りである。なお、各類縁物質は、それぞれ下記の構造を有する。また、総類縁物質とは、類縁1および類縁2を含むすべての不純物を合わせたものである。
(3) Method for measuring related substances The amounts of each related substance (related 1, related 2) and total related substances in the sample solution were measured by the HPLC method. Then, the amount of each related substance or total related substance was expressed by the ratio (%) of the peak area of each related substance or total related substance to the total peak area derived from Escitalopram of HPLC. The sample solution used for this measurement and the measurement conditions for HPLC are as follows. In addition, each related substance has the following structure. Further, the total related substance is a combination of all impurities including the related 1 and the related 2.

Figure 0007051638000002
Figure 0007051638000002

Figure 0007051638000003
Figure 0007051638000003

〔試料溶液〕
錠剤(1個)または顆粒(1個)に、下記移動相Aを20mL加えて振り混ぜて超音波処理した。得られた液を孔径0.45μm以下のメンブランフィルターでろ過し、初めのろ液5mLを除き、次のろ液10mLを試料溶液とした。
[Sample solution]
To tablets (1 piece) or granules (1 piece), 20 mL of the following mobile phase A was added and shaken for ultrasonic treatment. The obtained solution was filtered through a membrane filter having a pore size of 0.45 μm or less, 5 mL of the first filtrate was removed, and 10 mL of the next filtrate was used as a sample solution.

〔HPLC測定条件〕
検出器:紫外吸光光度計(測定波長:237nm)
カラム:内径4.6mm、長さ25cmのステンレス管に5μmの液体クロマトグラフ用オクタデシルシリカゲルを充填したもの。
カラム温度:45℃付近の一定温度
移動相A:pH3.0のリン酸塩緩衝液/アセトニトリル混液(17:3)
移動相B:アセトニトリル/pH3.0のリン酸塩緩衝液(4:1)
移動相の送液:移動相A及び移動相の混合比を適宜調整し、濃度勾配制御する。
流量:毎分1.0mL
[HPLC measurement conditions]
Detector: Ultraviolet absorptiometer (measurement wavelength: 237 nm)
Column: A stainless steel tube with an inner diameter of 4.6 mm and a length of 25 cm filled with 5 μm octadecyl silica gel for liquid chromatograph.
Column temperature: Constant temperature around 45 ° C. Mobile phase A: Phosphate buffer / acetonitrile mixed solution with pH 3.0 (17: 3)
Mobile phase B: acetonitrile / pH 3.0 phosphate buffer (4: 1)
Liquid transfer of mobile phase: The mixing ratio of mobile phase A and mobile phase is appropriately adjusted, and the concentration gradient is controlled.
Flow rate: 1.0 mL / min

[試験例1] 酸化鉄含有の効果(平均粒子径D50が15μmの場合)
表1、2の前段に示す処方に従い、平均粒子径D50が15μmエスシタロプラムシュウ酸塩および各添加剤を混合し、直接打錠することによって試験用素錠を得た。そして、各試験用素錠について、光安定性試験を行った。その試験結果を表1、2の後段に示す。
[Test Example 1] Effect of iron oxide content (when the average particle size D 50 is 15 μm)
According to the formulation shown in the first stage of Tables 1 and 2, test uncoated tablets were obtained by mixing escitalopram oxalate having an average particle size D 50 of 15 μm and each additive and directly tableting. Then, a photostability test was conducted on each test uncoated tablet. The test results are shown in the latter part of Tables 1 and 2.

Figure 0007051638000004
Figure 0007051638000004

Figure 0007051638000005
Figure 0007051638000005

表1、2に示す結果から明らかな通り、酸化鉄を含む錠剤は、酸化鉄を含まない錠剤あるいは酸化鉄の代わりに酸化チタンを含む錠剤よりも光安定性に優れていた。 As is clear from the results shown in Tables 1 and 2, the tablets containing iron oxide were superior in photostability to the tablets containing no iron oxide or the tablets containing titanium oxide instead of iron oxide.

[試験例2] 酸化鉄含有の効果(平均粒子径D50が40μmの場合)
表3、4の前段に示す処方に従い、試験例1に記載の製法と同様にして、試験用素錠を得た。そして、各試験用素錠について、光安定性試験を行った。その試験結果を表3、4の後段に示す。
[Test Example 2] Effect of iron oxide content (when the average particle size D 50 is 40 μm)
Test uncoated tablets were obtained in the same manner as in Test Example 1 according to the formulations shown in the first stage of Tables 3 and 4. Then, a photostability test was conducted on each test uncoated tablet. The test results are shown in the latter part of Tables 3 and 4.

Figure 0007051638000006
Figure 0007051638000006

Figure 0007051638000007
Figure 0007051638000007

表3、4に示す結果から明らかな通り、酸化鉄を含む錠剤は、酸化鉄を含まない錠剤あるいは酸化鉄の代わりに酸化チタンを含む錠剤よりも光安定性に優れていた。 As is clear from the results shown in Tables 3 and 4, the tablets containing iron oxide were superior in photostability to the tablets containing no iron oxide or the tablets containing titanium oxide instead of iron oxide.

[試験例3] 原薬の粒子径の効果(非コーティング顆粒の安定性)
表5ないし表6の前段に示す処方に従い、平均粒子径D50が15μm、40μm、または180μmのエスシタロプラムシュウ酸塩、D-マンニトール、クロスカルメロースナトリウム、およびヒドロキシプロピルセルロースを混合しつつ、これに着色剤(黄色三二酸化鉄、三二酸化鉄、または酸化チタン)を水に分散させた分散液、または分散させない液を加えて、造粒し、乾燥させ、整粒して、試験用整粒末(素顆粒)を得た。そして、各試験用素顆粒について、光安定性試験を行った。その試験結果を表5ないし表6の後段に示す。
[Test Example 3] Effect of particle size of API (stability of uncoated granules)
According to the formulation shown in the first sentence of Tables 5 to 6, escitaloplum oxalate, D-mannitol, croscarmellose sodium, and hydroxypropyl cellulose having an average particle size D50 of 15 μm, 40 μm, or 180 μm are mixed therein. Add a dispersion in which a colorant (yellow iron sesquioxide, iron sesquioxide, or titanium oxide) is dispersed in water, or a solution in which the colorant is not dispersed, and granulate, dry, and sizing to test granulation powder. (Elementary granules) were obtained. Then, a photostability test was performed on each test granule. The test results are shown in the latter part of Tables 5 to 6.

Figure 0007051638000008
Figure 0007051638000008

Figure 0007051638000009
Figure 0007051638000009

表5、表6に示す結果から明らかな通り、平均粒子径D50が180μmのものに比べ、15μm、および40μmものを含む顆粒は、光安定性に優れていた。 As is clear from the results shown in Tables 5 and 6, the granules containing 15 μm and 40 μm were superior in photostability to those having an average particle diameter D 50 of 180 μm.

[試験例4] 原薬の粒子径の効果(コーティング粒子からなる錠剤の安定性)
表7、8に示す処方に従い、平均粒子径D50が15μm、40μm、または180μmのエスシタロプラムシュウ酸塩、D-マンニトール、クロスカルメロースナトリウム、およびヒドロキシプロピルセルロースを混合しつつ、これに着色剤(黄色三二酸化鉄、三二酸化鉄、または酸化チタン)を水に分散させた分散液、または分散させない液を加えて、造粒し、乾燥させ、整粒して、核粒子を調製した。別途、精製水と無水エタノールの混合液にエチルセルロース(被覆剤)を溶解させた溶解液に、タルクを分散させて被覆液を調製した。
[Test Example 4] Effect of particle size of API (stability of tablet made of coated particles)
According to the formulations shown in Tables 7 and 8, escitalloplum oxalate, D-mannitol, croscarmellose sodium, and hydroxypropyl cellulose having an average particle size D50 of 15 μm, 40 μm, or 180 μm are mixed with a colorant (colorant (). A dispersion liquid in which yellow iron sesquioxide, iron steride dioxide, or titanium oxide was dispersed in water or a liquid in which the mixture was not dispersed was added, and the particles were granulated, dried, and sized to prepare nuclear particles. Separately, a coating solution was prepared by dispersing talc in a solution solution in which ethyl cellulose (coating agent) was dissolved in a mixed solution of purified water and absolute ethanol.

上記核粒子を流動層造粒機に入れ、これに上記被覆液を噴霧し、乾燥させ、整粒して、整粒末(コーティング粒子)を調製した。かかるコーティング粒子、D-マンニトール、結晶セルロース、軽質無水ケイ酸、クロスカルメロースナトリウム、タルク、ステアリン酸マグネシウムを混合し、打錠することにより、試験用素錠を得た。そして、各試験用素錠について、光安定性試験を行った。その試験結果を表7、8の各後段に示す。 The nuclear particles were placed in a fluidized bed granulator, sprayed with the coating liquid, dried, and sized to prepare granulated powder (coated particles). Such coating particles, D-mannitol, crystalline cellulose, light anhydrous silicic acid, croscarmellose sodium, talc, and magnesium stearate were mixed and beaten to obtain a test uncoated tablet. Then, a photostability test was conducted on each test uncoated tablet. The test results are shown in the latter part of Tables 7 and 8.

Figure 0007051638000010
Figure 0007051638000010

Figure 0007051638000011
Figure 0007051638000011

表7、表8に示す結果から明らかな通り、平均粒子径D50が180μmのものに比べ、15μm、および40μmものを含むコーティング粒子から得られた錠剤は、光安定性に優れていた。 As is clear from the results shown in Tables 7 and 8, tablets obtained from coated particles containing 15 μm and 40 μm of average particle size D50 were superior in photostability as compared with those having an average particle size of 180 μm.

[試験例5] エチルセルロース被覆の効果(熱安定性、マンニトール含有)
表9に示す処方に従い、平均粒子径D50が15μmのエスシタロプラムシュウ酸塩、D-マンニトール、クロスカルメロースナトリウム、およびヒドロキシプロピルセルロースを混合しつつ、これに三二酸化鉄を水に分散させた分散液を加えて造粒し、乾燥させ、整粒して、核粒子を調製した。実施例57を除き、別途、精製水と無水エタノールの混合液に被覆剤(エチルセルロース、ヒプロメロース、またはアミノアルキルメタクリレートコポリマーE)を溶解させた溶解液に、タルクを分散させて被覆液を調製した。
[Test Example 5] Effect of ethyl cellulose coating (heat stability, containing mannitol)
According to the formulation shown in Table 9, escitaloplum oxalate having an average particle size D50 of 15 μm, D-mannitol, croscarmellose sodium, and hydroxypropyl cellulose were mixed, and iron sesquioxide was dispersed in water. The liquid was added, granulated, dried, and sized to prepare nuclear particles. Except for Example 57, talc was separately dispersed in a solution prepared by dissolving a coating agent (ethyl cellulose, hypromellose, or aminoalkyl methacrylate copolymer E) in a mixed solution of purified water and absolute ethanol to prepare a coating solution.

実施例57を除き、上記核粒子を流動層造粒機に入れ、これに上記被覆液を噴霧し、乾燥させ、整粒して、整粒末(コーティング粒子)を調製した。かかるコーティング粒子または非コーティング顆粒(核粒子)、D-マンニトール、結晶セルロース、軽質無水ケイ酸、クロスカルメロースナトリウム、タルク、ステアリン酸マグネシウムを混合し、打錠することにより、試験用素錠を得た。そして、各試験用素錠について、熱安定性試験を行った。その試験結果を表10に示す。 Except for Example 57, the nuclear particles were placed in a fluidized bed granulator, and the coating liquid was sprayed onto the particles, dried, and granulated to prepare granulated powder (coated particles). A test uncoated tablet is obtained by mixing such coated particles or uncoated granules (nuclear particles), D-mannitol, crystalline cellulose, light anhydrous silicic acid, croscarmellose sodium, talc, and magnesium stearate and tableting. rice field. Then, a thermal stability test was conducted on each test uncoated tablet. The test results are shown in Table 10.

Figure 0007051638000012
Figure 0007051638000012

Figure 0007051638000013
Figure 0007051638000013

表10に示す結果から明らかな通り、核粒子をエチルセルロースで被覆したコーティング粒子から得られた錠剤は、核粒子を他の被覆剤で被覆したコーティング粒子または被覆剤で被覆しない粒子から得られた錠剤よりも熱安定性に優れていた。 As is clear from the results shown in Table 10, tablets obtained from coated particles in which the nuclear particles are coated with ethyl cellulose are tablets obtained from coated particles in which the nuclear particles are coated with another coating agent or particles not coated with the coating agent. It was superior in thermal stability.

[試験例6] エチルセルロース被覆の効果(熱安定性、乳糖含有)
表11に示す処方に従い、平均粒子径D50が15μmのエスシタロプラムシュウ酸塩、乳糖水和物、クロスカルメロースナトリウム、およびヒドロキシプロピルセルロースを混合しつつ、これに三二酸化鉄を水に分散させた分散液を加えて造粒し、乾燥させ、整粒して、核粒子を調製した。実施例66を除き、別途、精製水と無水エタノールの混合液に被覆剤(エチルセルロース)を溶解させた溶解液に、タルクを分散させて被覆液を調製した。
[Test Example 6] Effect of ethyl cellulose coating (heat stability, containing lactose)
According to the formulation shown in Table 11, escitaloplum oxalate having an average particle size D50 of 15 μm, lactose hydrate, croscarmellose sodium, and hydroxypropyl cellulose were mixed, and iron sesquioxide was dispersed in water. The dispersion was added, granulated, dried, and sized to prepare nuclear particles. Except for Example 66, talc was separately dispersed in a solution prepared by dissolving a coating agent (ethyl cellulose) in a mixed solution of purified water and absolute ethanol to prepare a coating solution.

実施例66を除き、上記核粒子を流動層造粒機に入れ、これに上記被覆液を噴霧し、乾燥させ、整粒して、整粒末(コーティング粒子)を調製した。かかるコーティング顆粒または非コーティング顆粒(核粒子)、D-マンニトール、結晶セルロース、軽質無水ケイ酸、クロスカルメロースナトリウム、タルク、ステアリン酸マグネシウムを混合し、打錠することにより、試験用素錠を得た。そして、各試験用素錠について、熱安定性試験を行った。その試験結果を表12に示す。 Except for Example 66, the nuclear particles were placed in a fluidized bed granulator, and the coating liquid was sprayed onto the particles, dried, and granulated to prepare granulated powder (coated particles). A test uncoated tablet is obtained by mixing and tableting such coated or uncoated granules (nuclear particles), D-mannitol, crystalline cellulose, light anhydrous silicic acid, croscarmellose sodium, talc, and magnesium stearate. rice field. Then, a thermal stability test was conducted on each test uncoated tablet. The test results are shown in Table 12.

Figure 0007051638000014
Figure 0007051638000014

Figure 0007051638000015
Figure 0007051638000015

表12に示す結果から明らかな通り、核粒子をエチルセルロースで被覆したコーティング粒子から得られた錠剤は、被覆剤で被覆しない粒子から得られた錠剤よりも熱安定性に優れていた。 As is clear from the results shown in Table 12, the tablets obtained from the coated particles in which the nuclear particles were coated with ethyl cellulose had better thermal stability than the tablets obtained from the particles not coated with the coating agent.

[試験例7] エチルセルロース被覆の効果(熱安定性、結晶セルロース含有)
表13に示す処方に従い、平均粒子径D50が15μmのエスシタロプラムシュウ酸塩、結晶セルロース、クロスカルメロースナトリウム、およびヒドロキシプロピルセルロースを混合しつつ、これに三二酸化鉄を水に分散させた分散液を加えて造粒し、乾燥させ、整粒して、核粒子を調製した。実施例73を除き、別途、精製水と無水エタノールの混合液に被覆剤(エチルセルロース)を溶解させた溶解液に、タルクを分散させて被覆液を調製した。
[Test Example 7] Effect of ethyl cellulose coating (heat stability, containing crystalline cellulose)
According to the formulation shown in Table 13, a dispersion liquid in which escitaloplum oxalate having an average particle size D50 of 15 μm, crystalline cellulose, croscarmellose sodium, and hydroxypropyl cellulose are mixed and iron sesquioxide is dispersed in water. Was added, granulated, dried, and sized to prepare nuclear particles. Except for Example 73, talc was separately dispersed in a solution prepared by dissolving a coating agent (ethyl cellulose) in a mixed solution of purified water and absolute ethanol to prepare a coating solution.

実施例73を除き、上記核粒子を流動層造粒機に入れ、これに上記被覆液を噴霧し、乾燥させ、整粒して、整粒末(コーティング顆粒)を調製した。かかるコーティング顆粒または非コーティング顆粒(核粒子)、D-マンニトール、結晶セルロース、軽質無水ケイ酸、クロスカルメロースナトリウム、タルク、ステアリン酸マグネシウムを混合し、打錠することにより、試験用素錠を得た。そして、各試験用素錠について、熱安定性試験を行った。その試験結果を表14に示す。 Except for Example 73, the nuclear particles were placed in a fluidized bed granulator, and the coating liquid was sprayed onto the granules, dried, and granulated to prepare granulated powder (coated granules). A test uncoated tablet is obtained by mixing and tableting such coated or uncoated granules (nuclear particles), D-mannitol, crystalline cellulose, light anhydrous silicic acid, croscarmellose sodium, talc, and magnesium stearate. rice field. Then, a thermal stability test was conducted on each test uncoated tablet. The test results are shown in Table 14.

Figure 0007051638000016
Figure 0007051638000016

Figure 0007051638000017
Figure 0007051638000017

表14に示す結果から明らかな通り、核粒子をエチルセルロースで被覆したコーティング顆粒から得られた錠剤は、被覆剤で被覆しない粒子から得られた錠剤よりも熱安定性に優れていた。 As is clear from the results shown in Table 14, the tablets obtained from the coated granules in which the nuclear particles were coated with ethyl cellulose had better thermal stability than the tablets obtained from the particles not coated with the coating agent.

また、図1から明らかな通り、核粒子の賦形剤としてマンニトールまたは結晶セルロースを含有するものから得られた錠剤は、核粒子の賦形剤として乳糖を含有するものから得られた錠剤よりも熱安定性に優れていた。 Further, as is clear from FIG. 1, a tablet obtained from a tablet containing mannitol or crystalline cellulose as an excipient for nuclear particles is more than a tablet obtained from a tablet containing lactose as an excipient for nuclear particles. It had excellent thermal stability.

[実施例74]
表15に示す処方に従い、平均粒子径D50が15μmのエスシタロプラムシュウ酸塩、D-マンニトール、クロスカルメロースナトリウム、およびヒドロキシプロピルセルロースを混合しつつ、これに着色剤(黄色三二酸化鉄)を水に分散させた分散液を加えて、造粒し、乾燥させ、整粒して、核粒子を調製した。別途、精製水にヒプロメロースを溶解させた溶解液に、タルクを分散させて中間層被覆液を調製した。
[Example 74]
According to the formulation shown in Table 15, escitaloplum oxalate having an average particle size D50 of 15 μm, D-mannitol, croscarmellose sodium, and hydroxypropyl cellulose are mixed, and a coloring agent (yellow iron sesquioxide) is added to the mixture. The dispersion liquid dispersed in the mixture was added to the mixture, granulated, dried, and sized to prepare nuclear particles. Separately, talc was dispersed in a solution prepared by dissolving hypromellose in purified water to prepare an intermediate layer coating solution.

上記核粒子を流動層造粒機に入れ、これに上記中間層被覆液を噴霧し、乾燥させ、整粒して、整粒末(中間層粒子)を調製した。別途、精製水と無水エタノールの混合液に被覆剤(エチルセルロース)を溶解させた溶解液に、タルクを分散させてエチルセルロース被覆液を調製した。
上記整粒末(中間層粒子)を流動層造粒機に入れ、これに上記エチルセルロース被覆液を噴霧し、乾燥させ、整粒して、整粒末(コーティング粒子)を調製した。
The nuclear particles were placed in a fluidized bed granulator, sprayed with the intermediate layer coating liquid, dried, and sized to prepare granulated powder (intermediate layer particles). Separately, talc was dispersed in a solution prepared by dissolving a coating agent (ethyl cellulose) in a mixed solution of purified water and absolute ethanol to prepare an ethyl cellulose coating solution.
The sized powder (intermediate layer particles) was placed in a fluidized bed granulator, and the ethyl cellulose coating liquid was sprayed onto the granulated powder, dried, and sized to prepare sized powder (coated particles).

Figure 0007051638000018
Figure 0007051638000018

[実施例75]
表16に示す処方に従い、平均粒子径D50が15μmのエスシタロプラムシュウ酸塩およびヒドロキシプロピルセルロースを精製水と無水エタノールの混合液に溶解させた溶解液に、タルクおよび黄色三二酸化鉄を分散させて被覆液を調整した。D-マンニトール球状顆粒を流動層造粒機に入れ、これに上記被覆液を噴霧し、乾燥させ、整粒して、整粒末(核粒子)を調製した。別途、精製水と無水エタノールの混合液に被覆剤(エチルセルロース)を溶解させた溶解液に、タルクを分散させてエチルセルロース被覆液を調製した。
上記整粒末(核粒子)を流動層造粒機に入れ、これに上記エチルセルロース被覆液を噴霧し、乾燥させ、整粒して、整粒末(コーティング粒子)を調製した。
[Example 75]
According to the formulation shown in Table 16, talc and yellow iron sesquioxide are dispersed in a solution prepared by dissolving escitaloplum oxalate and hydroxypropyl cellulose having an average particle size D50 of 15 μm in a mixed solution of purified water and anhydrous ethanol. The coating solution was adjusted. D-mannitol spherical granules were placed in a fluidized bed granulator, and the above-mentioned coating liquid was sprayed on the granules, dried and sized to prepare sized powder (nuclear particles). Separately, talc was dispersed in a solution prepared by dissolving a coating agent (ethyl cellulose) in a mixed solution of purified water and absolute ethanol to prepare an ethyl cellulose coating solution.
The sized powder (nuclear particles) was placed in a fluidized bed granulator, and the ethyl cellulose coating liquid was sprayed onto the granulated powder, dried, and sized to prepare sized powder (coated particles).

Figure 0007051638000019
Figure 0007051638000019

本発明組成物は、保存安定性が担保されているから、医薬品として有用である。 The composition of the present invention is useful as a pharmaceutical product because its storage stability is guaranteed.

Claims (5)

エスシタロプラムまたはその塩と、光安定性の向上を図るために0.01~15重量%の範囲内で黄色三二酸化鉄または三二酸化鉄とを含むことを特徴とする、錠剤。A tablet comprising escitalopram or a salt thereof and yellow iron sesquioxide or iron sesquioxide in the range of 0.01 to 15% by weight for improving photostability. 塩がシュウ酸塩である、請求項1に記載の錠剤。The tablet according to claim 1, wherein the salt is oxalate. エスシタロプラムまたはその塩と賦形剤とを含む核粒子の外側に、エチルセルロースを含む被覆層を有する顆粒を含むことを特徴とする、請求項1または2に記載の錠剤。The tablet according to claim 1 or 2, wherein the granules having a coating layer containing ethyl cellulose are contained outside the nuclear particles containing escitalopram or a salt thereof and an excipient. さらにタルクを被覆層に含む、請求項3に記載の錠剤。The tablet according to claim 3, further comprising talc in the coating layer. 前記賦形剤が、D-マンニトールまたは結晶セルロースである、請求項3または4に記載の錠剤。The tablet according to claim 3 or 4, wherein the excipient is D-mannitol or crystalline cellulose.
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