WO2018124089A1 - 貼付剤 - Google Patents
貼付剤 Download PDFInfo
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- WO2018124089A1 WO2018124089A1 PCT/JP2017/046697 JP2017046697W WO2018124089A1 WO 2018124089 A1 WO2018124089 A1 WO 2018124089A1 JP 2017046697 W JP2017046697 W JP 2017046697W WO 2018124089 A1 WO2018124089 A1 WO 2018124089A1
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- Prior art keywords
- patch
- mass
- sensitive adhesive
- pressure
- acid
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Images
Classifications
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- A61K9/703—Transdermal patches and similar drug-containing composite devices, e.g. cataplasms characterised by shape or structure; Details concerning release liner or backing; Refillable patches; User-activated patches
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- A61K9/7069—Transdermal patches of the drug-in-adhesive type, i.e. comprising drug in the skin-adhesive layer the adhesive comprising macromolecular compounds obtained otherwise than by reactions only involving carbon to carbon unsaturated bonds, e.g. polysiloxane, polyesters, polyurethane, polyethylene oxide
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Definitions
- the present invention relates to a patch.
- DMSO Dimethyl sulfoxide
- Patent Document 1 discloses a diclofenac sodium patch using DMSO as a dissolving agent.
- the adhesiveness of the patch gradually decreases with time.
- the inventors of the present invention have found that when DMSO is added to the adhesive layer of the patch, a composition that provides adhesiveness to the patch is plasticized and the adhesiveness of the adhesive layer is lowered. Then, if a patch containing DMSO is applied for a long time (for example, 24 hours), sufficient adhesiveness does not last until the end, and the patch may be peeled off before the treatment is completed. The inventors have found.
- the present inventors have found that the adhesiveness of a patch after a long time application is greatly improved by combining a pressure-sensitive adhesive layer containing DMSO with a support having specific moisture permeability, and the present invention It came to be completed.
- the patch of the present invention comprises a support layer and an adhesive layer laminated on the support layer, and the moisture permeability of the support layer is 400 g / m 2 ⁇ 24 hours or more. And DMSO and an adhesive.
- the moisture permeability of the support layer may be 750 g / m 2 ⁇ 24 hours or more, or 2000 g / m 2 ⁇ 24 hours or more.
- the pressure-sensitive adhesive layer may include at least one pressure-sensitive adhesive selected from a rubber-based pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive, and a silicone-based pressure-sensitive adhesive, and may include a styrene-isoprene-styrene block copolymer.
- the drug may be one or more drugs selected from the group consisting of ketoprofen, diclofenac sodium, and indomethacin.
- the pressure-sensitive adhesive layer may contain an organic acid.
- the patch of the present invention sufficient adhesion persists for a long time by using a support layer having high moisture permeability. Therefore, even if it applies for a long time (for example, 24 hours), a patch is hard to peel off.
- the drug is an analgesic and anti-inflammatory drug, such as ketoprofen, diclofenac sodium or indomethacin
- a sufficient cumulative skin permeation amount is more certain when the patch is applied to the patient's skin for 24 hours. Is obtained.
- the maximum plasma concentration Cmax of the drug is more reliably achieved. Therefore, the patch of the present invention enables more effective drug treatment.
- the patch of the present invention comprises a support layer and an adhesive layer laminated on the support layer.
- the pressure-sensitive adhesive layer is usually laminated on one side of the support layer, and if necessary, a peelable film is laminated on the other side of the pressure-sensitive adhesive layer.
- the pressure-sensitive adhesive layer is a part that is pressed against the skin when the patch is applied, and includes at least a drug, DMSO, and a pressure-sensitive adhesive.
- Drug is a component soluble in DMSO.
- the drug may be an analgesic and anti-inflammatory drug such as loxoprofen, felbinac, flurbiprofen, indomethacin, ketoprofen, and diclofenac sodium, an analgesic or narcotic such as buprenorphine, fentanyl, and butorphanol, clonidine Or other drugs such as estradiol, tulobuterol, oxybutynin.
- the content of the drug is, for example, 1% by mass to 20% by mass or 2% by mass to 10% by mass with respect to the total mass of the pressure-sensitive adhesive layer.
- the content of DMSO is preferably 1% by mass to 20% by mass, more preferably 1% by mass to 15% by mass with respect to the total mass of the pressure-sensitive adhesive layer.
- the content is more preferably 2% by mass to 10% by mass, and particularly preferably 3% by mass to 10% by mass.
- the ratio of drug to DMSO varies depending on the drug.
- the ratio of the mass of diclofenac sodium and the mass of DMSO in the adhesive layer in the patch immediately before application is the ratio of diclofenac sodium.
- the ratio is preferably 1: 0.3 to 1: 4, more preferably 1: 0.4 to 1: 3.
- it is 1: 0.6 to 1: 3, more preferably 1: 0.72 to 1: 3.
- the pressure-sensitive adhesive may include at least one pressure-sensitive adhesive selected from a rubber-based pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive, and a silicone-based pressure-sensitive adhesive.
- rubber adhesives include polyisoprene, polyisobutylene (PIB), polybutadiene, styrene-butadiene-styrene block copolymer, styrene-isoprene-styrene (SIS) block copolymer, styrene-butadiene rubber, styrene-isoprene. Rubber or a combination of these.
- SIS block copolymer, PIB, or a combination thereof is preferable from the viewpoint of enhancing the skin permeability of the drug and further increasing the adhesiveness of the patch, and a mixture of the SIS block copolymer and PIB. More preferably.
- the acrylic pressure-sensitive adhesive include (meth) acrylic acid, (meth) acrylic acid-2-ethylhexyl, (meth) acrylic acid methyl, (meth) acrylic acid butyl, and (meth) acrylic acid hydroxyethyl. It is a pressure-sensitive adhesive obtained by polymerizing or copolymerizing at least one of acrylic monomers.
- the silicone-based pressure-sensitive adhesive mainly contains silicone rubber such as polydimethylsiloxane, polymethylvinylsiloxane, and polymethylphenylsiloxane.
- the content of the adhesive is 10% by mass to 70% by mass, 10% by mass to 40% by mass, and 15% by mass with respect to the total mass of the adhesive layer from the adhesive point of the patch. It may be from 50% to 50%, 15% to 35%, or 30% to 40% by weight.
- the content of the pressure-sensitive adhesive may be 50% by mass to 90% by mass with respect to the total mass of the pressure-sensitive adhesive layer.
- the pressure-sensitive adhesive layer may further contain an organic acid for the purpose of promoting the percutaneous absorption of the drug or preventing the drug crystals from precipitating over time.
- Organic acids include aliphatic monocarboxylic acids (formic acid, acetic acid, propionic acid, butyric acid, isobutyric acid, valeric acid, caproic acid, enanthic acid, caprylic acid, nonanoic acid, capric acid, lauric acid, oleic acid, linoleic acid, Linolenic acid, isostearic acid, sorbic acid, pyruvic acid, etc.), aliphatic dicarboxylic acids (oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, sebacic acid, maleic acid, fumaric acid, oxaloacetic acid, etc.), and fat Aliphatic carboxylic acids such as aliphatic tricarboxylic acids (aconitic acid, propanetricar
- organic acids when the drug is diclofenac sodium, it promotes percutaneous absorption of diclofenac sodium and prevents diclofenac sodium crystals from precipitating with time, and in particular, citric acid and oleic acid. , Mesylic acid, or alkali metal salts thereof are preferred. By containing these organic acids, a sufficient cumulative skin permeation amount of the drug can be obtained more reliably.
- These organic acids may be used individually by 1 type, and may be used in combination of 2 or more type.
- the content of the organic acid is 0.01% by mass to 20% with respect to the total mass of the pressure-sensitive adhesive layer from the viewpoint of improving the skin permeability of the drug and preventing the drug crystals from precipitating over time.
- the mass may be 0.1% by mass, may be 0.1% by mass to 15% by mass, and may be 0.2% by mass to 13% by mass.
- the pressure-sensitive adhesive layer may further contain a tackifier, a plasticizer, or other additives.
- the tackifier is, for example, an alicyclic saturated hydrocarbon resin, a hydrogenated rosin ester, a terpene resin, or a combination thereof.
- the content of the tackifier is, for example, 5% by mass to 60% by mass, 10% by mass to 50% by mass, 25% by mass to 45% by mass, or 30% by mass to 35% by mass with respect to the total mass of the adhesive layer. % By mass.
- the plasticizer is, for example, liquid paraffin or liquid polybutene.
- the content of the plasticizer is, for example, 7% by mass to 70% by mass, 10% by mass to 60% by mass, or 11% by mass to 25% by mass with respect to the total mass of the pressure-sensitive adhesive layer.
- the pressure-sensitive adhesive layer may be a single layer composed of a single composition, or may be a multilayer composed of a plurality of layers having different compositions.
- the total thickness of the pressure-sensitive adhesive layer is preferably 10 ⁇ m to 1000 ⁇ m, more preferably 30 ⁇ m to 300 ⁇ m, from the viewpoint that the patch is appropriately adhered to the skin.
- the probe tack value of the pressure-sensitive adhesive layer is preferably 30 gF or more, and more preferably 40 gF or more.
- the probe tack value of the pressure-sensitive adhesive layer may be, for example, 43 gF or more, 44 gF or more, 53 gF or more, 61 gF or more, 68 gF or more, or 71 gF or more.
- the probe tack value of the pressure-sensitive adhesive layer is measured in accordance with the probe tack test method of ASTM D2979.
- the support layer holds the pressure-sensitive adhesive layer.
- the moisture permeability of the support layer is 400 g / m 2 ⁇ 24 hours or more.
- DMSO gradually evaporates from the patch applied to the skin, which improves the adhesiveness of the patch, and peels off even when the patch is applied for a long time. Hateful.
- the moisture permeability is originally an index for water permeability, the present inventors have found that a support with high moisture permeability also has high DMSO permeability (volatility).
- Moisture permeability of the support layer for example, 422g / m 2 ⁇ 24 hours or more, 750g / m 2 ⁇ 24 hours or more, 2000g / m 2 ⁇ 24 hours or more, 2077g / m 2 ⁇ 24 hours or more, 4000 g / m 2 It may be 24 hours or more, 5500 g / m 2 ⁇ 24 hours or more, 5667 g / m 2 ⁇ 24 hours or more, or 8408 g / m 2 ⁇ 24 hours or more.
- the upper limit of moisture permeability may be 20000 g / m 2 ⁇ 24 hours. When the moisture permeability of the support layer is in such a range, DMSO is more easily volatilized from the pressure-sensitive adhesive layer, which is more effective in improving the adhesiveness of the patch.
- the moisture permeability of the support layer in the present invention means the moisture permeability at 40 ° C. defined in the standard of JIS Z0208: 1976 (moisture-proof packaging material moisture permeability test method (cup method)).
- the support layer is preferably a monolayer or laminate of fibers made into a cloth (woven fabric, non-woven fabric, or knitted fabric), or a nonporous or porous film (sheet).
- the material of the support layer is polyester (polyethylene terephthalate (PET), polyethylene isophthalate, polypropylene terephthalate, polypropylene isophthalate, polybutylene terephthalate, or polyethylene naphthalate), polyolefin (ethylene, propylene, vinyl acetate, acrylonitrile, etc.)
- PET polyethylene terephthalate
- PET polyethylene isophthalate
- polypropylene terephthalate polypropylene isophthalate
- polybutylene terephthalate or polyethylene naphthalate
- polyolefin ethylene, propylene, vinyl acetate, acrylonitrile, etc.
- the cloth may be coated with a rubber composition.
- the rubber composition contains a rubber-based pressure-sensitive adhesive.
- the rubber adhesive is, for example, polyisoprene, PIB, polybutadiene, styrene-butadiene-styrene block copolymer, SIS block copolymer, styrene-butadiene rubber, styrene-isoprene rubber, or a combination thereof.
- the rubber composition may contain a tackifier.
- the tackifier is, for example, an alicyclic saturated hydrocarbon resin, a hydrogenated rosin ester, a terpene resin, or a combination thereof.
- the rubber composition may further contain additives such as a plasticizer and a filler.
- the thickness of the support layer is, for example, 0.1 mm to 2 mm.
- the basis weight of the support layer is, for example, 30 g / m 2 to 200 g / m 2 . In this specification, the thickness and basis weight of the support layer are measured according to the standard of JIS L 1906: 2000.
- the 50% modulus (JIS L 1018: 1999) in any of the longitudinal direction (material flow direction) and the lateral direction (material width direction) of the support layer is 1N / 50 mm It is preferable that it is 12N / 50mm.
- the 50% modulus is 12 N / 50 mm or less, the stress applied to the patch by the expansion and contraction of the skin is smaller, and thus the adhesion to the skin is good.
- the material is preferably highly moisture-permeable (high DMSO permeability) such as polyurethane.
- a film made of polyurethane is preferable from the viewpoint of improving the adhesion of the patch to the skin and the stretchability of the patch because of its excellent stretchability.
- the support layer is preferably, for example, a nonwoven fabric or film made of polyurethane, a knitted fabric made of polyethylene terephthalate, a polyester cloth coated with a rubber composition, or a combination thereof. More specifically, the support layer is preferably a laminate of a film made of polyurethane and a nonwoven fabric made of polyurethane fiber, a nonwoven fabric made of PET fiber, or a polyester cloth coated with a rubber composition.
- the DMSO concentration in the patch immediately before application is, for example, 1% to 20% by mass, 2% by mass to 2% by mass with respect to the total mass of the pressure-sensitive adhesive layer, in order to prevent the drug from precipitating in the unused patch. It may be 12%, 2% to 10%, or 2% to 8% by weight. Further, the DMSO concentration in the patch after 24 hours is preferably 0.1% by mass to 4% by mass, and more preferably 0.1% by mass to 1.5% by mass.
- the support layer is preferably one that can achieve such a decrease in DMSO concentration.
- the rate of decrease in DMSO concentration is 0.08% by mass / hour to 0.16% by mass / hour (ie, A support layer that is reduced by 1.92 mass% to 3.84 mass% per 24 hours is preferable.
- the support layer is preferably such that the DMSO concentration has a half-life of 5 hours to 24 hours. If the support layer satisfies such conditions, sufficient adhesion tends to be maintained even after 24 hours.
- the rate of decrease in DMSO concentration and the half-life of the above-mentioned patch are both 30 ° C. and 65% RH, and the patch is placed so that the support layer faces upward. It is calculated by measuring the transition of the concentration by gas chromatography (GC).
- the patch can be produced, for example, by the following method, but is not limited thereto, and a known method can be used.
- a melt is applied with a predetermined thickness on a peelable film (release film, release liner) to form an adhesive layer.
- the support layer is pressure-bonded to the pressure-sensitive adhesive layer so that the pressure-sensitive adhesive layer is sandwiched between the release liner and the support layer.
- the patch can be obtained by cutting into a desired shape. In this case, the release liner is removed when the patch is applied.
- the patches were prepared as follows. 1) Each component of the pressure-sensitive adhesive layer was mixed and applied on a release film (PET film subjected to a release treatment). By drying this, DMSO was removed to a predetermined amount, and a pressure-sensitive adhesive layer (100 g / m 2 ) having a thickness of 100 ⁇ m was formed. 2) A support layer was laminated on the adhesive layer to obtain a patch. The patch was appropriately cut into an appropriate size.
- the moisture permeability of the used support layer was measured under the measurement conditions of 40 ° C. and 90% RH according to JIS Z0208.
- the adhesiveness of the patch to the skin was evaluated by the following method. A patch was applied to the skin of the subject. After 24 hours, the degree of adhesion of the patch was visually observed. The case where 90% or more of the area of the patch was attached to the skin was evaluated as “A”, and the other cases were evaluated as “B”.
- Test Example 1 A patch (placebo patch) having the composition shown in Table 1 was prepared.
- “PET film”, “PET film / PET non-woven fabric”, “PU film / PU non-woven fabric”, and “PET knitted fabric” are respectively a PET film, a PET film and a PET fiber non-woven fabric.
- the rubber-based pressure-sensitive adhesive in Table 1 is a mixture of a SIS block copolymer and PIB, and contains the SIS block copolymer and PIB in a mass ratio of 19: 7.
- the “PET knitted fabric” has a moisture permeability of 5667 g / m 2 ⁇ 24 hours, a vertical 50% modulus of 3.9 N / 50 mm, and a horizontal 50% modulus of 3.4 N / 50 mm. Some were used (same in the examples below).
- the patch was placed and stored in an incubator at 30 ° C. and 65% RH with the support layer facing upward and the release film facing downward. After 24 hours, DMSO was extracted from the patch and quantified by GC. This storage condition is a condition simulating the environment when the patch is applied to the skin for 24 hours.
- the results are shown in Table 1, FIG. 1 and FIG.
- the patches of Reference Examples 3 and 4 in which the moisture permeability of the support layer is 400 g / m 2 ⁇ 24 hours or more are the patches of Reference Examples 1 and 2 in which the moisture permeability of the support layer is less than 400 g / m 2 ⁇ 24 hours.
- the DMSO concentration after storage for 24 hours was greatly reduced.
- the patch having a support layer with high moisture permeability showed a relationship that the rate of decrease in DMSO concentration in the pressure-sensitive adhesive layer was high (FIG. 1) and the half-life of DMSO concentration was short (FIG. 2).
- the adhesiveness of the patches stored under the same conditions for 24 hours was evaluated.
- the results are shown in Table 1.
- the patches of Reference Examples 3 and 4 in which the moisture permeability of the support layer is 400 g / m 2 ⁇ 24 hours or more are the patches of Reference Examples 1 and 2 in which the moisture permeability of the support layer is less than 400 g / m 2 ⁇ 24 hours.
- the adhesiveness (peeling force) after storage for 24 hours was good.
- Test Example 2 A patch having the composition shown in Table 2 was prepared.
- the rubber-based pressure-sensitive adhesive in Table 2 is a mixture of a SIS block copolymer and PIB, and contains the SIS block copolymer and PIB in a mass ratio of 19: 7.
- the adhesiveness of the patches of Examples 2 and 7 to 9 was evaluated based on the probe tack value measured under the following conditions in accordance with the ASTM D2979 probe tack test method.
- a high probe tack value means excellent tack.
- Testing machine Tacking testing machine (Reska)
- Probe tip material Stainless steel Adhesive surface diameter: 5 mm Separation speed: 2 mm / sec
- the patch of Example 2 was placed and stored in an incubator at 30 ° C. and 65% RH so that the support layer faced upward.
- the DMSO concentration (mass%) in the pressure-sensitive adhesive layer was quantified by GC, and the transition of the DMSO concentration was examined.
- the DMSO concentration after 24 hours is 1.2% by mass with respect to the total mass of the pressure-sensitive adhesive layer, which is 33% with respect to the initial (before storage) DMSO concentration of 100%.
- the rate of decrease in DMSO concentration calculated from the change in DMSO concentration was 0.1% by mass / hour, and the half-life was 15 hours.
- Test Example 3 A patch having the composition shown in Table 3 was prepared. About the patch of the structure shown in Table 3, the probe tack value was measured by the method similar to Test Example 2, and adhesiveness was evaluated.
- the rubber-based pressure-sensitive adhesive in Table 3 is a mixture of a SIS block copolymer and PIB, and contains the SIS block copolymer and PIB in a mass ratio of 19: 7.
- the “rubber / polyester cloth” in Table 3 means a polyester cloth coated with a rubber composition.
- the PU film in the patch of Example 16 (moisture permeability of 786 g / m 2 ⁇ 24 hours) and the PU film in the patches of Examples 17, 19 and 20 (moisture permeability of 8408 g / m 2 ⁇ 24 hours) are respectively “3M CoTran 9701 Backing” and “3M CoTran 9700” from 3M.
- the adhesiveness after 24 hours was evaluated for the patches of Examples 16 to 19 and Comparative Examples 4 and 5. The results are shown in Table 3. Further, the patches of these Examples and Comparative Examples were placed and stored in an incubator at 30 ° C. and 65% RH so that the support layer faced upward. After 24 hours, the DMSO concentration (mass%) in the pressure-sensitive adhesive layer was quantified by GC, and the transition of the DMSO concentration was examined. The results are shown in Table 3. The patches of Examples 16 to 19 in which the moisture permeability of the support layer was 400 g / m 2 ⁇ 24 hours or more had good adhesion after 24 hours.
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Abstract
Description
以下の例において、別段の記載がない限り、貼付剤は次のように調製した。
1)粘着剤層の各成分を混和し、剥離フィルム(離型処理をしたPETフィルム)上に塗布した。これを乾燥させることでDMSOを所定量まで除去し、厚み100μmの粘着剤層(100g/m2)を形成した。
2)粘着剤層上に支持体層を積層し、貼付剤を得た。貼付剤は適当な大きさに適宜裁断した。
以下の例において、使用した支持体層の透湿度は、JIS Z0208に準じて、40℃、90%RHの測定条件で測定した。
以下の例において、別段の記載がない限り、貼付剤の粘着性は、次に示す180°剥離試験により評価した。
1)貼付剤から1cm×5cmの試験片を準備し、所定条件で所定時間保存した。
2)試験片から剥離フィルムを除去し、試験片をステンレス板に貼付した。
3)インストロン型引張試験機を用いて、試験片を30cm/分の速度でステンレス板から180°の方向に引き剥がし、剥離力(gF/cm)を測定した。
4)定常な剥離を示した区間での剥離力の積分値から、平均の剥離力(gF/cm)を算出した。高い剥離力は、優れた粘着性を意味する。
以下の例において、貼付剤の皮膚への付着性は、次に示す方法により評価した。被験者の皮膚に貼付剤を貼付した。24時間後、貼付剤の付着の程度を目視で観察した。貼付剤の面積の90%以上が皮膚に付着している状態である場合を「A」、それ以外の場合を「B」として評価した。
表1に示す構成の貼付剤(プラセボ貼付剤)を調製した。表中、「PETフィルム」、「PETフィルム/PET不織布」、「PUフィルム/PU不織布」、及び「PET編布」とは、それぞれ、PETからなるフィルム、PETからなるフィルムとPET繊維からなる不織布との積層体、PUからなるフィルムとPU繊維からなる不織布との積層体、及びPETからなる編布を意味する。また、表1におけるゴム系粘着剤は、SISブロック共重合体とPIBの混合物であって、SISブロック共重合体とPIBを19:7の質量比で含む。「PET編布」としては、透湿度が5667g/m2・24時間であり、縦方向の50%モジュラスが3.9N/50mmであり、かつ横方向の50%モジュラスが3.4N/50mmであるものを使用した(以下の例において同じ)。貼付剤を、30℃、65%RHのインキュベーター内に、支持体層が上向きになり、剥離フィルムが下向きになるように配置し、保存した。24時間後、貼付剤からDMSOを抽出し、GCにより定量した。この保存条件は、貼付剤を皮膚に24時間貼付した場合の環境を模した条件である。
表2に示す構成の貼付剤を調製した。表2におけるゴム系粘着剤は、SISブロック共重合体とPIBの混合物であって、SISブロック共重合体とPIBを19:7の質量比で含む。実施例2、7~9の貼付剤の粘着性を、ASTM D2979のプローブタック試験方法に準じて以下の条件で測定したプローブタック値により評価した。高いプローブタック値は、優れた粘着性を意味する。
試験機:タッキング試験機(レスカ)
プローブ部先端材質:ステンレス
接着面の直径:5mm
引離し速度:2mm/秒
接着荷重:200gF/cm2
接着時間:1秒
表3に示す構成の貼付剤を調製した。表3に示す構成の貼付剤について、試験例2と同様の方法でプローブタック値を測定し、粘着性を評価した。表3におけるゴム系粘着剤は、SISブロック共重合体とPIBの混合物であって、SISブロック共重合体とPIBを19:7の質量比で含む。表3における「ゴム/ポリエステル布」とは、ゴム組成物でコーティングされたポリエステルの布を意味する。実施例16の貼付剤におけるPUフィルム(透湿度786g/m2・24時間)、並びに、実施例17、19及び20の貼付剤におけるPUフィルム(透湿度8408g/m2・24時間)は、それぞれ3M社の「3M CoTran 9701 Backing」及び「3M CoTran 9700」である。
Claims (7)
- 支持体層と支持体層上に積層された粘着剤層とを備え、
支持体層の透湿度が400g/m2・24時間以上であり、
粘着剤層が、薬物と、ジメチルスルホキシドと、粘着剤とを含む、貼付剤。 - 支持体層の透湿度が750g/m2・24時間以上である、請求項1に記載の貼付剤。
- 支持体層の透湿度が2000g/m2・24時間以上である、請求項1に記載の貼付剤。
- 粘着剤層が、ゴム系粘着剤、アクリル系粘着剤及びシリコーン系粘着剤から選択される少なくとも一つの粘着剤を含む、請求項1~3のいずれか一項に記載の貼付剤。
- 粘着剤層が、スチレン-イソプレン-スチレンブロック共重合体を含む、請求項1~3のいずれか一項に記載の貼付剤。
- 薬物が、ケトプロフェン、ジクロフェナクナトリウム、及びインドメタシンからなる群より選択される1種以上の薬物である、請求項1~5のいずれか一項に記載の貼付剤。
- 粘着剤層が有機酸を含む、請求項6に記載の貼付剤。
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