CN107929245A - A kind of ranolazine solid dispersion preparation and preparation method thereof - Google Patents

A kind of ranolazine solid dispersion preparation and preparation method thereof Download PDF

Info

Publication number
CN107929245A
CN107929245A CN201711283513.8A CN201711283513A CN107929245A CN 107929245 A CN107929245 A CN 107929245A CN 201711283513 A CN201711283513 A CN 201711283513A CN 107929245 A CN107929245 A CN 107929245A
Authority
CN
China
Prior art keywords
ranolazine
lubricant
parts
povidone
solid dispersions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711283513.8A
Other languages
Chinese (zh)
Inventor
欧泽桂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foshan City Teng Rui Medicine Technology Co Ltd
Original Assignee
Foshan City Teng Rui Medicine Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Foshan City Teng Rui Medicine Technology Co Ltd filed Critical Foshan City Teng Rui Medicine Technology Co Ltd
Priority to CN201711283513.8A priority Critical patent/CN107929245A/en
Publication of CN107929245A publication Critical patent/CN107929245A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • A61K9/1605Excipients; Inactive ingredients
    • A61K9/1629Organic macromolecular compounds
    • A61K9/1635Organic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyvinyl pyrrolidone, poly(meth)acrylates
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/495Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
    • 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
    • A61K9/2004Excipients; Inactive ingredients
    • A61K9/2022Organic macromolecular compounds
    • A61K9/2027Organic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyvinyl pyrrolidone, poly(meth)acrylates

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Medicinal Preparation (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

The present invention relates to field of medicine preparations, specifically discloses a kind of ranolazine solid dispersion preparation and preparation method thereof.Ranolazine solid dispersion preparation of the present invention includes ranolazine, povidone, specific lubricant and specific disintegrant and diluent.Result of extraction, bioavilability and the stability of invention formulation, beneficial to the industrialized production of ranolazine solid dispersion preparation.

Description

A kind of ranolazine solid dispersion preparation and preparation method thereof
Technical field
The present invention relates to field of medicine preparations, and in particular to a kind of ranolazine solid dispersion preparation and preparation method thereof.
Background technology
Ranolazine has antianginal and function of resisting myocardial ischemia, its specific mechanism of action is unclear.Researches show that It can partly suppress fatty acid oxidation, but can also influence the electrical conduction of heart at the same time, cause the QT interval related with dosage to be prolonged It is long.Ranolazine be only limited to take the antianginal drugs such as long acting nitrate, calcium ion channel blocker and beta 2 receptor retarding agent without The patient of effect uses.Clinical test shows that the effect that male patient takes ranolazine is better than women,
The adverse reactions such as dizzy, headache, constipation and nausea occur in long-term use.
Ranolazine is a kind of new chemical entities compound, is the first treatment chronic angina medicine that FDA ratifies over 10 years Thing.Different from existing antianginal drug, ranolazine is partial fatty acid oxidation enzyme inhibitor, on heart rate and blood pressure without influence, Can effectively allevating angina pectoris, and do not change other kinetic parameters of medicine, the quality of life of patient with angina pectoris can be improved. According to the estimation U.S. of American heart association, about 6,800,000 people are diagnosed with angina pectoris, Chinese patients people every year
Number up to more than 4 000 ten thousand, therefore ranolazine has very big market development potential.
The content of the invention
It is an object of the invention to provide a kind of ranolazine solid dispersion preparation and preparation method thereof, the present invention provides such as Lower technical solution:
A kind of ranolazine solid dispersion particles agent, including ranolazine, povidone and lubricant;
The lubricant in talcum powder, magnesium stearate, silica, sodium stearyl fumarate, lauryl sodium sulfate one Kind is two or more.
In certain embodiments of the present invention, the lubricant can be further selected from talcum powder, magnesium stearate, titanium dioxide One kind in silicon, sodium stearyl fumarate, lauryl sodium sulfate, two or three;Further, the lubricant is optional From:
Two kinds of lauryl sodium sulfate and magnesium stearate;
Two kinds of lauryl sodium sulfate and talcum powder;
Two kinds of silica and magnesium stearate;Or three kinds of lauryl sodium sulfate, silica and magnesium stearate.
Wherein, do not limited for the ratio between a variety of lubricants, but in certain embodiments of the present invention, 12 Ratio between sodium alkyl sulfate and magnesium stearate, silica is 1:1:4, the ratio between lauryl sodium sulfate and talcum powder Example is 1:2.
In certain embodiments of the present invention, in parts by weight, all formulations include 10-50 parts of ranolazines, 20- 200 parts of povidone and 2-6 parts of lubricants;The parts by weight can be represented in a concrete fashion using any conventional unit of weight, Such as microgram, milligram, gram, kilogram, two, jin, kilogram, for example, in the form of specific manifestation of the granule by mg for parts by weight, Including 50-200mg ranolazines, 20-200mg povidone and 2-6mg lubricants.
In certain embodiments of the present invention, the povidone further selected from 30 POVIDONE K 30 BP/USP 25, PVP K30 or 30 POVIDONE K 30 BP/USP 90.
In certain embodiments of the present invention, the composition of the granule further can be as follows:
Granule filling capsule shells of the present invention are capsule preparations, therefore present invention also offers a kind of ranolazine solid point Granular media capsule, including granule of the present invention and capsule shells.
Present invention also offers the preparation method of the granule, ranolazine, povidone and partial lubrication agent is mixed logical Cross melt extrusion method and prepare solid dispersions, then add rest lubricant and obtain the granule;Or by ranolazine and Povidone is dissolved in organic solvent, is prepared solid dispersions by solvent evaporated method or spray drying process, is added lubricant After obtain the granule;
Wherein, when being prepared by melt extrusion method, the partial lubrication agent refers not only to an a kind of part for lubricant, but also Refer to a certain lubricant during a variety of lubricants, preferably prepared with silica containing a variety of lubricants by melt extrusion method, Using silica as the partial lubrication agent.
In addition, the present invention also provides a kind of ranolazine solid dispersions tablet, including ranolazine, povidone, lubricant, collapse Solve agent and diluent;
The lubricant in talcum powder, magnesium stearate, silica, sodium stearyl fumarate, lauryl sodium sulfate one Kind is two or more;
The disintegrant is selected from crospovidone, Ac-Di-Sol, sodium carboxymethyl starch, low substituted hydroxy-propyl fiber It is more than one or both of element;
The diluent be selected from microcrystalline cellulose, starch, pregelatinized starch, lactose, mannitol, one or both of dextrin with On.
In certain embodiments of the present invention, the povidone further selected from 30 POVIDONE K 30 BP/USP 25, PVP K30 or 30 POVIDONE K 30 BP/USP 90.
In certain embodiments of the present invention, the composition of the tablet further can be as follows:
Mode one:
Component Parts by weight
Ranolazine 50
PVP K30 100
Microcrystalline cellulose 102 50
Ac-Di-Sol 20
Lauryl sodium sulfate 10
Silica 2
Piece weight 232
Mode two:
Component Parts by weight
Ranolazine 20
PVP K30 100
Microcrystalline cellulose 102 50
Ac-Di-Sol 20
Lauryl sodium sulfate 10
Silica 2
Piece weight 207
Mode three:
Component Parts by weight
Ranolazine 70
PVP K30 100
Microcrystalline cellulose 102 50
Ac-Di-Sol 20
Lauryl sodium sulfate 10
Silica 2
Piece weight 252
Present invention also offers the preparation method of the tablet, ranolazine and povidone are dissolved in organic solvent, and by molten Agent evaporation or spray drying process prepare solid dispersions, then add lubricant, disintegrant and diluent mixed pressuring plate, Obtain the tablet;Or ranolazine, povidone and partial lubrication agent mixing are prepared into solid by melt extrusion method and disperseed Body, then adds disintegrant, diluent and rest lubricant mixed pressuring plate, obtains the tablet;
Wherein, when being prepared by melt extrusion method, the partial lubrication agent refers not only to an a kind of part for lubricant, but also Refer to a certain lubricant during a variety of lubricants, preferably prepared with silica containing a variety of lubricants by melt extrusion method, Using silica as the partial lubrication agent.
Embodiment
The invention discloses a kind of ranolazine solid dispersion preparation and preparation method thereof, method is as follows:
1st, melt extrusion method
The ranolazine and povidone of recipe quantity are taken, adds partial lubrication agent, is mixed, is put and the mixing is extruded in double screw extruder Thing, in extrusion, melt is deaerated through row extruded tube applying vacuum, through two to turning calender roller, by the extrudate Calendering, then to being cooled down before grinding, obtains solid dispersions.
2nd, spray drying process
By the ranolazine of recipe quantity, povidone, (acetone is dissolved in organic solvent:Methanol v/v=1:1-2), spray drying, into 85-90 DEG C of air temperature, air quantity 20-25kg/hr, atomizing pressure 0.5-0.75bar, atomization gas flow 1.5-2.0kg/hr, feed flow Flow 4.5-5.0ml/min, obtained spray-dried powders put at 45-60 DEG C vacuum drying 24 it is small when, obtain solid dispersions.
3rd, solvent evaporated method
By the ranolazine of recipe quantity, povidone, (acetone is dissolved in organic solvent:Absolute ethyl alcohol v/v=2:1st, acetone:Dichloromethane Alkane v/v=3:1st, methanol:Dichloromethane v/v=4:1 or acetone:Methanol v/v=3:1) in solvent, the water-bath at 55-60 DEG C, Vacuum 0.07-0.08MPa, is recovered under reduced pressure organic solvent, after being in thick, continues reduced vacuum drying 1-3h, is transferred to true 80 mesh sieves are crossed in empty drying box, after 40-65 DEG C of dry 48h to crush, and obtain solid dispersions.
With reference to embodiment, the present invention is further explained.
Embodiment 1:Ranolazine solid dispersions tablet
Prescription:
Component Parts by weight
Ranolazine 75
PVP K30 100
Microcrystalline cellulose 102 50
Ac-Di-Sol 20
Lauryl sodium sulfate 10
Silica 2
Piece weight 257
Preparation process:Solvent evaporated method
Ranolazine, the PVP K30 of recipe quantity will be taken, be dissolved in acetone:Methanol (1:3) in solvent, subtract at 60 DEG C in water-bath Pressure volatilization, vacuum 0.07-0.08MPa, is recovered under reduced pressure organic solvent, after being in thick, continues reduced vacuum drying 1h, turns Enter in vacuum drying chamber, 80 mesh sieves are crossed after 40 DEG C of dry 48h and are crushed, obtain solid dispersions.
By the microcrystalline cellulose pH102 of obtained solid dispersions addition recipe quantity, Ac-Di-Sol, 12 Sodium alkyl sulfate, silica, mixing, direct tablet compressing.
Embodiment 2:Ranolazine solid dispersions tablet
Prescription:
Component Parts by weight
Ranolazine 25
PVP K30 100
Microcrystalline cellulose 102 50
Ac-Di-Sol 20
Lauryl sodium sulfate 10
Talcum powder 2
Piece weight 212
Preparation process:Solvent evaporated method
Ranolazine, the PVP K30 of recipe quantity are taken, is dissolved in methanol:Dichloromethane (4:1) in solvent, the water-bath at 60 DEG C, very Reciprocal of duty cycle 0.07-0.08MPa, is recovered under reduced pressure organic solvent, after being in thick, continues reduced vacuum drying 1h, is transferred to vacuum and does 80 mesh sieves are crossed in dry case, after 40 DEG C of dry 48h to crush, and obtain solid dispersions.
Obtained solid dispersions are added to microcrystalline cellulose pH102, crospovidone, the dodecyl sulphate of recipe quantity Sodium, talcum powder, mixing, direct tablet compressing.
Embodiment 3:Ranolazine solid dispersions tablet
Prescription:
Component Parts by weight
Ranolazine 50
PVP K30 100
Microcrystalline cellulose 102 50
Ac-Di-Sol 20
Lauryl sodium sulfate 10
Silica 2
Piece weight 232
Preparation process:Solvent evaporated method
By the ranolazine of recipe quantity, PVP K30, acetone is dissolved in:Dichloromethane (3:1) in solvent, the water-bath at 55 DEG C, very Reciprocal of duty cycle 0.07-0.08MPa, is recovered under reduced pressure organic solvent, after being in thick, continues reduced vacuum drying 3h, is transferred to vacuum and does 80 mesh sieves are crossed in dry case, after 60 DEG C of dry 48h to crush, and obtain solid dispersions.
Obtained solid dispersions are added to pregelatinized starch, low-substituted hydroxypropyl cellulose, the dodecyl of recipe quantity Sodium sulphate, silica, mixing, direct tablet compressing.
Embodiment 4:Ranolazine solid dispersions tablet
Prescription:
Component Parts by weight
Ranolazine 25
PVP K30 100
Lactose 50
Sodium carboxymethyl starch 20
Lauryl sodium sulfate 10
Silica 2
Piece weight 212
Preparation process:Spray drying process
By the ranolazine of recipe quantity, PVP K30, acetone is dissolved in:Methanol (1:1) in solvent, spray drying, inlet air temperature 85 DEG C, air quantity 25kg/hr, atomizing pressure 0.5bar, atomization gas flow 1.5kg/hr, for flow quantity 4.5ml/min, obtained spraying Dried powder be placed at 45 DEG C vacuum drying 24 it is small when, obtain solid dispersions.
Lactose, sodium carboxymethyl starch, lauryl sodium sulfate, the silica of solid dispersions addition recipe quantity will be obtained, Mixing, direct tablet compressing.
Embodiment 5:Ranolazine solid dispersion particles agent
Prescription:
Component Parts by weight
Ranolazine 55
PVP K30 100
Microcrystalline cellulose 102 50
Ac-Di-Sol 20
Lauryl sodium sulfate 10
Silica 2
Piece weight 237
Preparation method:Solvent evaporated method
By the ranolazine of recipe quantity, PVP K30, acetone is dissolved in:Absolute ethyl alcohol (2:1) in solvent, microcrystalline cellulose is added 102nd, Ac-Di-Sol dissolves, and the water-bath at 60 DEG C, vacuum 0.07-0.08MPa, is recovered under reduced pressure organic solvent, After being in thick, continue reduced vacuum drying 3h, be transferred in vacuum drying chamber, 80 mesh sieves are crossed after 65 DEG C of dry 48h and are crushed, are obtained Solid dispersions.
Obtained solid dispersions are added to microcrystalline cellulose 102, Ac-Di-Sol, the dodecane of recipe quantity Base sodium sulphate and silica, mix, packing, up to granule.
Embodiment 6:Ranolazine solid dispersions capsule
Prescription:
Component Parts by weight
Ranolazine 100
PVP K30 100
Microcrystalline cellulose 102 50
Ac-Di-Sol 20
Lauryl sodium sulfate 10
Silica 2
Piece weight 282
Preparation method:Spray drying process
By the ranolazine of recipe quantity, 30 POVIDONE K 30 BP/USP 90, acetone is dissolved in:Methanol (1:2) in solvent, spray drying, inlet air temperature 90 DEG C, air quantity 20kg/hr, atomizing pressure 0.75bar, atomization gas flow 2.0kg/hr, for flow quantity 5.0ml/min, obtained spray Mist dried powder be placed at 60 DEG C vacuum drying 24 it is small when, obtain solid dispersions.
Obtained solid dispersions are added to eicosyl sodium sulphate, the magnesium stearate of recipe quantity, mixing, obtains particle Agent, it is capsule preparations to pour into 3# capsules.

Claims (10)

1. a kind of ranolazine solid dispersion particles agent, it is characterised in that including ranolazine, povidone and lubricant;
The lubricant in talcum powder, magnesium stearate, silica, sodium stearyl fumarate, lauryl sodium sulfate one Kind is two or more.
2. granule according to claim 1, it is characterised in that the lubricant is selected from talcum powder, magnesium stearate, titanium dioxide One kind in silicon, sodium stearyl fumarate, lauryl sodium sulfate, two or three.
3. granule according to claim 1, it is characterised in that in parts by weight, including 10-50 parts of ranolazines, 20-200 Part povidone and 2-6 parts of lubricants.
4. the preparation method of granule described in claim 1, it is characterised in that mix ranolazine, povidone and partial lubrication agent It is even that solid dispersions are prepared by melt extrusion method, then add rest lubricant and obtain the granule;Or by Reynolds Piperazine and povidone are dissolved in organic solvent, and solid dispersions, addition profit are prepared by solvent evaporated method or spray drying process The granule is obtained after lubrication prescription;
The lubricant in talcum powder, magnesium stearate, silica, sodium stearyl fumarate, lauryl sodium sulfate one Kind is two or more.
5. preparation method according to claim 4, it is characterised in that in parts by weight, each parts by weight of raw materials is 10-50 parts of thunders Promise piperazine, 20-200 part povidone and 2-6 parts of lubricants.
A kind of 6. ranolazine solid dispersions capsule, it is characterised in that including granule described in claim 1-3 any one and Capsule shells.
7. a kind of ranolazine solid dispersions tablet, it is characterised in that including ranolazine, povidone, lubricant, disintegrant and dilute Release agent;
The lubricant in talcum powder, magnesium stearate, silica, sodium stearyl fumarate, lauryl sodium sulfate one Kind is two or more;
The disintegrant is selected from crospovidone, Ac-Di-Sol, sodium carboxymethyl starch, low substituted hydroxy-propyl fiber It is more than one or both of element;
The diluent be selected from microcrystalline cellulose, starch, pregelatinized starch, lactose, mannitol, one or both of dextrin with On.
8. tablet according to claim 7, it is characterised in that the lubricant is selected from talcum powder, magnesium stearate, titanium dioxide One kind in silicon, sodium stearyl fumarate, lauryl sodium sulfate, two or three.
9. it is characterized in that, in parts by weight, including 10-50 parts of ranolazines, 20-150 parts of povidone, 2-6 parts of lubricants, 6-10 Part disintegrant and 20-80 parts of diluents.
10. the preparation method of tablet described in claim 7, it is characterised in that ranolazine and povidone are dissolved in organic solvent, And solid dispersions are prepared by solvent evaporated method or spray drying process, then add lubricant, disintegrant and diluent Mixed pressuring plate, obtains the tablet;Or ranolazine, povidone and partial lubrication agent are mixed and prepared by melt extrusion method Solid dispersions, then add disintegrant, diluent and rest lubricant mixed pressuring plate, obtain the tablet;
The lubricant in talcum powder, magnesium stearate, silica, sodium stearyl fumarate, lauryl sodium sulfate one Kind is two or more;
It is fine that the disintegrant is selected from crospovidone, Ac-Di-Sol, sodium carboxymethyl starch or low substituted hydroxy-propyl Dimension element;
The diluent be selected from microcrystalline cellulose, starch, pregelatinized starch, lactose, mannitol, one or both of dextrin with On.
CN201711283513.8A 2017-12-07 2017-12-07 A kind of ranolazine solid dispersion preparation and preparation method thereof Pending CN107929245A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711283513.8A CN107929245A (en) 2017-12-07 2017-12-07 A kind of ranolazine solid dispersion preparation and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711283513.8A CN107929245A (en) 2017-12-07 2017-12-07 A kind of ranolazine solid dispersion preparation and preparation method thereof

Publications (1)

Publication Number Publication Date
CN107929245A true CN107929245A (en) 2018-04-20

Family

ID=61945150

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711283513.8A Pending CN107929245A (en) 2017-12-07 2017-12-07 A kind of ranolazine solid dispersion preparation and preparation method thereof

Country Status (1)

Country Link
CN (1) CN107929245A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101066253A (en) * 2007-06-07 2007-11-07 北京本草天源药物研究院 Slow releasing ranolazine tablet
CN106176618A (en) * 2016-09-18 2016-12-07 佛山市弘泰药物研发有限公司 A kind of Roflumilast solid dispersion preparation and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101066253A (en) * 2007-06-07 2007-11-07 北京本草天源药物研究院 Slow releasing ranolazine tablet
CN106176618A (en) * 2016-09-18 2016-12-07 佛山市弘泰药物研发有限公司 A kind of Roflumilast solid dispersion preparation and preparation method thereof

Similar Documents

Publication Publication Date Title
CN104434809B (en) A kind of olaparib solid dispersion preparation and preparation method thereof
EP2777696B1 (en) Preparation of stable pharmaceutical dosage forms
CN106692069A (en) Empagliflozin solid dispersion preparation and preparation method thereof
CN106539768B (en) A kind of Lurasidone HCl oral disnitegration tablet and preparation method thereof
US10512619B2 (en) Solid oral formulation of fenretinide
CN106667922A (en) Solid desloratadine dispersion preparation and preparation method thereof
CN115768411A (en) Pharmaceutical composition containing nitroxoline lysine salt and preparation method and application thereof
JP7104039B2 (en) Pharmaceutical composition
CN112315918A (en) Ticagrelor pharmaceutical preparation
US20210244733A1 (en) Granulated product containing antitumor agent
CN107929245A (en) A kind of ranolazine solid dispersion preparation and preparation method thereof
CN106580902A (en) Brexpiprazole oral disintegrating tablet and preparation method thereof
KR20170128319A (en) Solid preparation containing antioxidant agent
WO2020027019A1 (en) Stabilizer-containing solid drug formulation
EP3620156A1 (en) Composition having improved water solubility and bioavailability
CN106727353A (en) A kind of Tadalafei solid dispersion preparation and preparation method thereof
US10406127B2 (en) Solid oral formulation of fenretinide
CN106667921A (en) Febuxostat solid dispersion preparation and preparation method thereof
CN107898759A (en) A kind of Tolvaptan solid dispersion preparation and preparation method thereof
CN106727360A (en) A kind of diacerein solid dispersion preparation and preparation method thereof
CN106692095A (en) Sustained-release oral preparation of brivaracetam, and preparation method thereof
CN110354093A (en) A kind of mosapride citrate pharmaceutical composition
CN113893222B (en) Pharmaceutical composition and preparation method and application thereof
CN106727354A (en) A kind of Apremilast solid dispersion preparation and preparation method thereof
CN107982253A (en) A kind of Zaltoprofen solid dispersion preparation and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20180420

WD01 Invention patent application deemed withdrawn after publication