JPS5910512A - 徐放性マイクロカプセルおよびその製法 - Google Patents
徐放性マイクロカプセルおよびその製法Info
- Publication number
- JPS5910512A JPS5910512A JP12019382A JP12019382A JPS5910512A JP S5910512 A JPS5910512 A JP S5910512A JP 12019382 A JP12019382 A JP 12019382A JP 12019382 A JP12019382 A JP 12019382A JP S5910512 A JPS5910512 A JP S5910512A
- Authority
- JP
- Japan
- Prior art keywords
- substance
- ethyl cellulose
- enteric
- core material
- methacrylic acid
- 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.)
- Granted
Links
- 239000003094 microcapsule Substances 0.000 title claims abstract description 46
- 238000013268 sustained release Methods 0.000 title abstract description 9
- 239000012730 sustained-release form Substances 0.000 title abstract description 9
- 238000002360 preparation method Methods 0.000 title description 3
- 239000000126 substance Substances 0.000 claims abstract description 56
- 239000001856 Ethyl cellulose Substances 0.000 claims abstract description 38
- 235000019325 ethyl cellulose Nutrition 0.000 claims abstract description 38
- 229920001249 ethyl cellulose Polymers 0.000 claims abstract description 38
- 239000002245 particle Substances 0.000 claims abstract description 37
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000003814 drug Substances 0.000 claims abstract description 17
- 229920000642 polymer Polymers 0.000 claims abstract description 17
- -1 Polysaccharide acetate Chemical class 0.000 claims abstract description 16
- 229940079593 drug Drugs 0.000 claims abstract description 13
- 229920001282 polysaccharide Polymers 0.000 claims abstract description 13
- 239000005017 polysaccharide Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 150000004676 glycans Chemical class 0.000 claims abstract description 9
- 238000005191 phase separation Methods 0.000 claims abstract description 7
- 239000012442 inert solvent Substances 0.000 claims abstract 4
- 239000011162 core material Substances 0.000 claims description 45
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 14
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 13
- 238000005469 granulation Methods 0.000 claims description 10
- 230000003179 granulation Effects 0.000 claims description 10
- 239000012907 medicinal substance Substances 0.000 claims description 10
- 150000002148 esters Chemical class 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 7
- 229920001577 copolymer Polymers 0.000 claims description 6
- 229920003145 methacrylic acid copolymer Polymers 0.000 claims description 5
- 229940117841 methacrylic acid copolymer Drugs 0.000 claims description 5
- 229920002554 vinyl polymer Polymers 0.000 claims description 5
- 239000002861 polymer material Substances 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 4
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- UIERETOOQGIECD-UHFFFAOYSA-N Angelic acid Natural products CC=C(C)C(O)=O UIERETOOQGIECD-UHFFFAOYSA-N 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 3
- 150000001241 acetals Chemical class 0.000 claims description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- 239000012752 auxiliary agent Substances 0.000 claims description 2
- 229940031704 hydroxypropyl methylcellulose phthalate Drugs 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims description 2
- 239000011118 polyvinyl acetate Substances 0.000 claims description 2
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 229920000623 Cellulose acetate phthalate Polymers 0.000 claims 1
- 229940081734 cellulose acetate phthalate Drugs 0.000 claims 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims 1
- 230000001969 hypertrophic effect Effects 0.000 claims 1
- 238000005453 pelletization Methods 0.000 claims 1
- 239000008187 granular material Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 210000002784 stomach Anatomy 0.000 abstract description 5
- 239000008186 active pharmaceutical agent Substances 0.000 abstract description 4
- 229940088679 drug related substance Drugs 0.000 abstract description 4
- 150000005215 alkyl ethers Chemical class 0.000 abstract description 3
- 210000000936 intestine Anatomy 0.000 abstract description 3
- 229940126701 oral medication Drugs 0.000 abstract 1
- 210000004798 organs belonging to the digestive system Anatomy 0.000 abstract 1
- 239000002775 capsule Substances 0.000 description 11
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 9
- 239000006185 dispersion Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 239000012528 membrane Substances 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 238000010828 elution Methods 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 229920002678 cellulose Polymers 0.000 description 5
- 239000001913 cellulose Substances 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 5
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 229920002301 cellulose acetate Polymers 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920000609 methyl cellulose Polymers 0.000 description 4
- 239000001923 methylcellulose Substances 0.000 description 4
- 235000010981 methylcellulose Nutrition 0.000 description 4
- 239000000825 pharmaceutical preparation Substances 0.000 description 4
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- UHSXRTHJCJGEKG-UQKRIMTDSA-N (1s)-1-[(3,4,5-trimethoxyphenyl)methyl]-1,2,3,4-tetrahydroisoquinolin-2-ium-6,7-diol;chloride Chemical compound Cl.COC1=C(OC)C(OC)=CC(C[C@H]2C3=CC(O)=C(O)C=C3CCN2)=C1 UHSXRTHJCJGEKG-UQKRIMTDSA-N 0.000 description 3
- FEDJGPQLLNQAIY-UHFFFAOYSA-N 2-[(6-oxo-1h-pyridazin-3-yl)oxy]acetic acid Chemical compound OC(=O)COC=1C=CC(=O)NN=1 FEDJGPQLLNQAIY-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 229960005316 diltiazem hydrochloride Drugs 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 3
- 239000000546 pharmaceutical excipient Substances 0.000 description 3
- 229940127557 pharmaceutical product Drugs 0.000 description 3
- 238000004513 sizing Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GAMPNQJDUFQVQO-UHFFFAOYSA-N acetic acid;phthalic acid Chemical compound CC(O)=O.OC(=O)C1=CC=CC=C1C(O)=O GAMPNQJDUFQVQO-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 230000000202 analgesic effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 210000001035 gastrointestinal tract Anatomy 0.000 description 2
- DNIAPMSPPWPWGF-UHFFFAOYSA-N monopropylene glycol Natural products CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- LSBYLCTXKMBORX-UHFFFAOYSA-N trimethoxy-$l^{3}-chlorane Chemical compound COCl(OC)OC LSBYLCTXKMBORX-UHFFFAOYSA-N 0.000 description 2
- JLPULHDHAOZNQI-ZTIMHPMXSA-N 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCCCCCC\C=C/C\C=C/CCCCC JLPULHDHAOZNQI-ZTIMHPMXSA-N 0.000 description 1
- MUZDXNQOSGWMJJ-UHFFFAOYSA-N 2-methylprop-2-enoic acid;prop-2-enoic acid Chemical compound OC(=O)C=C.CC(=C)C(O)=O MUZDXNQOSGWMJJ-UHFFFAOYSA-N 0.000 description 1
- KUXKWCPBFHIJJJ-UHFFFAOYSA-N 6-hydroxy-2-methylhex-2-enoic acid Chemical compound OC(=O)C(C)=CCCCO KUXKWCPBFHIJJJ-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 229920000856 Amylose Polymers 0.000 description 1
- FERIUCNNQQJTOY-UHFFFAOYSA-M Butyrate Chemical compound CCCC([O-])=O FERIUCNNQQJTOY-UHFFFAOYSA-M 0.000 description 1
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Natural products CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920008712 Copo Polymers 0.000 description 1
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerol Natural products OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- LFVLUOAHQIVABZ-UHFFFAOYSA-N Iodofenphos Chemical compound COP(=S)(OC)OC1=CC(Cl)=C(I)C=C1Cl LFVLUOAHQIVABZ-UHFFFAOYSA-N 0.000 description 1
- GUBGYTABKSRVRQ-QKKXKWKRSA-N Lactose Natural products OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)C(O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O GUBGYTABKSRVRQ-QKKXKWKRSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- UTKBLLDLHPDWDU-ODZAUARKSA-N acetic acid;(z)-but-2-enedioic acid Chemical compound CC(O)=O.OC(=O)\C=C/C(O)=O UTKBLLDLHPDWDU-ODZAUARKSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 230000000954 anitussive effect Effects 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 230000003110 anti-inflammatory effect Effects 0.000 description 1
- 230000001754 anti-pyretic effect Effects 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- 239000003146 anticoagulant agent Substances 0.000 description 1
- 229940127219 anticoagulant drug Drugs 0.000 description 1
- 239000003472 antidiabetic agent Substances 0.000 description 1
- 229940125715 antihistaminic agent Drugs 0.000 description 1
- 239000000739 antihistaminic agent Substances 0.000 description 1
- 230000009876 antimalignant effect Effects 0.000 description 1
- 239000002221 antipyretic Substances 0.000 description 1
- 229940124584 antitussives Drugs 0.000 description 1
- 206010003119 arrhythmia Diseases 0.000 description 1
- 230000006793 arrhythmia Effects 0.000 description 1
- 210000000467 autonomic pathway Anatomy 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- HUTIVPWAVQGKQA-UHFFFAOYSA-N calcium;octadecyl 2-hydroxypropanoate Chemical compound [Ca].CCCCCCCCCCCCCCCCCCOC(=O)C(C)O HUTIVPWAVQGKQA-UHFFFAOYSA-N 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000000496 cardiotonic agent Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000007771 core particle Substances 0.000 description 1
- YRUMDWGUXBZEPE-UHFFFAOYSA-N cyclohexane Chemical compound C1CCCCC1.C1CCCCC1 YRUMDWGUXBZEPE-UHFFFAOYSA-N 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 229960004166 diltiazem Drugs 0.000 description 1
- HSUGRBWQSSZJOP-RTWAWAEBSA-N diltiazem Chemical compound C1=CC(OC)=CC=C1[C@H]1[C@@H](OC(C)=O)C(=O)N(CCN(C)C)C2=CC=CC=C2S1 HSUGRBWQSSZJOP-RTWAWAEBSA-N 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 1
- PCHPORCSPXIHLZ-UHFFFAOYSA-N diphenhydramine hydrochloride Chemical compound [Cl-].C=1C=CC=CC=1C(OCC[NH+](C)C)C1=CC=CC=C1 PCHPORCSPXIHLZ-UHFFFAOYSA-N 0.000 description 1
- 239000002934 diuretic Substances 0.000 description 1
- 230000001882 diuretic effect Effects 0.000 description 1
- 239000013051 drainage agent Substances 0.000 description 1
- 235000013345 egg yolk Nutrition 0.000 description 1
- 210000002969 egg yolk Anatomy 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000003172 expectorant agent Substances 0.000 description 1
- 230000003419 expectorant effect Effects 0.000 description 1
- 229940066493 expectorants Drugs 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000004503 fine granule Substances 0.000 description 1
- 229920005570 flexible polymer Polymers 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 239000002778 food additive Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 210000004051 gastric juice Anatomy 0.000 description 1
- 239000004083 gastrointestinal agent Substances 0.000 description 1
- 229940127227 gastrointestinal drug Drugs 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 229920003132 hydroxypropyl methylcellulose phthalate Polymers 0.000 description 1
- 239000005554 hypnotics and sedatives Substances 0.000 description 1
- 229940126904 hypoglycaemic agent Drugs 0.000 description 1
- 239000000411 inducer Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000000968 intestinal effect Effects 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000008101 lactose Substances 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 239000003589 local anesthetic agent Substances 0.000 description 1
- 229960005015 local anesthetics Drugs 0.000 description 1
- GRVDJDISBSALJP-UHFFFAOYSA-N methyloxidanyl Chemical group [O]C GRVDJDISBSALJP-UHFFFAOYSA-N 0.000 description 1
- 229940035363 muscle relaxants Drugs 0.000 description 1
- 239000003158 myorelaxant agent Substances 0.000 description 1
- 230000000144 pharmacologic effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 102000004196 processed proteins & peptides Human genes 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 230000000069 prophylactic effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000003169 respiratory stimulant agent Substances 0.000 description 1
- 229940066293 respiratory stimulants Drugs 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000008347 soybean phospholipid Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000021 stimulant Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- VACCAVUAMIDAGB-UHFFFAOYSA-N sulfamethizole Chemical compound S1C(C)=NN=C1NS(=O)(=O)C1=CC=C(N)C=C1 VACCAVUAMIDAGB-UHFFFAOYSA-N 0.000 description 1
- 229960005158 sulfamethizole Drugs 0.000 description 1
- 238000013269 sustained drug release Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 230000001256 tonic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229920003176 water-insoluble polymer Polymers 0.000 description 1
- 238000005550 wet granulation Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Medicinal Preparation (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12019382A JPS5910512A (ja) | 1982-07-09 | 1982-07-09 | 徐放性マイクロカプセルおよびその製法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12019382A JPS5910512A (ja) | 1982-07-09 | 1982-07-09 | 徐放性マイクロカプセルおよびその製法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5910512A true JPS5910512A (ja) | 1984-01-20 |
| JPS6353966B2 JPS6353966B2 (enrdf_load_stackoverflow) | 1988-10-26 |
Family
ID=14780208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12019382A Granted JPS5910512A (ja) | 1982-07-09 | 1982-07-09 | 徐放性マイクロカプセルおよびその製法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5910512A (enrdf_load_stackoverflow) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4721619A (en) * | 1983-12-22 | 1988-01-26 | Elan Corporation P.L.C. | Controlled absorption diltiazen pharmaceutical formulation |
| US4992277A (en) * | 1989-08-25 | 1991-02-12 | Schering Corporation | Immediate release diltiazem formulation |
| US5000962A (en) * | 1989-08-25 | 1991-03-19 | Schering Corporation | Long acting diltiazem formulation |
| US5364620A (en) * | 1983-12-22 | 1994-11-15 | Elan Corporation, Plc | Controlled absorption diltiazem formulation for once daily administration |
| US5800836A (en) * | 1992-08-05 | 1998-09-01 | F. H. Faulding & Co. Limited | Pelletized pharmaceutical composition |
-
1982
- 1982-07-09 JP JP12019382A patent/JPS5910512A/ja active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4721619A (en) * | 1983-12-22 | 1988-01-26 | Elan Corporation P.L.C. | Controlled absorption diltiazen pharmaceutical formulation |
| US5364620A (en) * | 1983-12-22 | 1994-11-15 | Elan Corporation, Plc | Controlled absorption diltiazem formulation for once daily administration |
| US5616345A (en) * | 1983-12-22 | 1997-04-01 | Elan Corporation Plc | Controlled absorption diltiazen formulation for once-daily administration |
| US4992277A (en) * | 1989-08-25 | 1991-02-12 | Schering Corporation | Immediate release diltiazem formulation |
| US5000962A (en) * | 1989-08-25 | 1991-03-19 | Schering Corporation | Long acting diltiazem formulation |
| US5800836A (en) * | 1992-08-05 | 1998-09-01 | F. H. Faulding & Co. Limited | Pelletized pharmaceutical composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6353966B2 (enrdf_load_stackoverflow) | 1988-10-26 |
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