DD299946A5 - Verfahren zur Herstellung von pharmazeutischen Präparaten mit verzögerter Wirkstoffabgabe - Google Patents
Verfahren zur Herstellung von pharmazeutischen Präparaten mit verzögerter Wirkstoffabgabe Download PDFInfo
- Publication number
- DD299946A5 DD299946A5 DD339325A DD33932590A DD299946A5 DD 299946 A5 DD299946 A5 DD 299946A5 DD 339325 A DD339325 A DD 339325A DD 33932590 A DD33932590 A DD 33932590A DD 299946 A5 DD299946 A5 DD 299946A5
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- acid
- drug
- coating
- layer
- intestinal
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000000825 pharmaceutical preparation Substances 0.000 title claims abstract description 16
- 230000008569 process Effects 0.000 title claims abstract description 10
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 230000003111 delayed effect Effects 0.000 title abstract description 14
- 238000000576 coating method Methods 0.000 claims abstract description 117
- 239000003814 drug Substances 0.000 claims abstract description 111
- 239000011248 coating agent Substances 0.000 claims abstract description 110
- 229940079593 drug Drugs 0.000 claims abstract description 105
- 230000000968 intestinal effect Effects 0.000 claims abstract description 52
- 210000000936 intestine Anatomy 0.000 claims abstract description 19
- 210000002784 stomach Anatomy 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 239000010410 layer Substances 0.000 claims description 71
- 239000002253 acid Substances 0.000 claims description 60
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 45
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 claims description 34
- 229960001138 acetylsalicylic acid Drugs 0.000 claims description 32
- CGIGDMFJXJATDK-UHFFFAOYSA-N indomethacin Chemical compound CC1=C(CC(O)=O)C2=CC(OC)=CC=C2N1C(=O)C1=CC=C(Cl)C=C1 CGIGDMFJXJATDK-UHFFFAOYSA-N 0.000 claims description 22
- 239000011859 microparticle Substances 0.000 claims description 17
- 238000013268 sustained release Methods 0.000 claims description 15
- 239000012730 sustained-release form Substances 0.000 claims description 15
- 239000001856 Ethyl cellulose Substances 0.000 claims description 12
- 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 description 12
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 12
- 229920001249 ethyl cellulose Polymers 0.000 claims description 12
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 12
- 229960000905 indomethacin Drugs 0.000 claims description 11
- 229920002126 Acrylic acid copolymer Polymers 0.000 claims description 10
- 230000002378 acidificating effect Effects 0.000 claims description 10
- 229920000623 Cellulose acetate phthalate Polymers 0.000 claims description 9
- 229920002845 Poly(methacrylic acid) Polymers 0.000 claims description 9
- 229940081734 cellulose acetate phthalate Drugs 0.000 claims description 9
- 239000003456 ion exchange resin Substances 0.000 claims description 9
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 9
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 8
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 claims description 8
- AQHHHDLHHXJYJD-UHFFFAOYSA-N propranolol hydrochloride Natural products C1=CC=C2C(OCC(O)CNC(C)C)=CC=CC2=C1 AQHHHDLHHXJYJD-UHFFFAOYSA-N 0.000 claims description 7
- 239000004925 Acrylic resin Substances 0.000 claims description 6
- 229920000178 Acrylic resin Polymers 0.000 claims description 6
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 6
- 239000001361 adipic acid Substances 0.000 claims description 6
- 235000011037 adipic acid Nutrition 0.000 claims description 6
- 229920002301 cellulose acetate Polymers 0.000 claims description 6
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 6
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 claims description 6
- 238000009505 enteric coating Methods 0.000 claims description 5
- 239000002702 enteric coating Substances 0.000 claims description 5
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims description 5
- 229960003883 furosemide Drugs 0.000 claims description 5
- 229920003132 hydroxypropyl methylcellulose phthalate Polymers 0.000 claims description 5
- 229940031704 hydroxypropyl methylcellulose phthalate Drugs 0.000 claims description 5
- YQSHYGCCYVPRDI-UHFFFAOYSA-N (4-propan-2-ylphenyl)methanamine Chemical compound CC(C)C1=CC=C(CN)C=C1 YQSHYGCCYVPRDI-UHFFFAOYSA-N 0.000 claims description 4
- MEAPRSDUXBHXGD-UHFFFAOYSA-N 3-chloro-n-(4-propan-2-ylphenyl)propanamide Chemical compound CC(C)C1=CC=C(NC(=O)CCCl)C=C1 MEAPRSDUXBHXGD-UHFFFAOYSA-N 0.000 claims description 4
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 4
- 229960003782 dextromethorphan hydrobromide Drugs 0.000 claims description 4
- 229960005489 paracetamol Drugs 0.000 claims description 4
- 229960004604 propranolol hydrochloride Drugs 0.000 claims description 4
- 239000011973 solid acid Substances 0.000 claims description 4
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 3
- NWVHJWLIIAEGQF-UHFFFAOYSA-N acetic acid;cyclohex-3-ene-1,2-dicarboxylic acid Chemical compound CC(O)=O.OC(=O)C1CCC=CC1C(O)=O NWVHJWLIIAEGQF-UHFFFAOYSA-N 0.000 claims description 3
- 235000010323 ascorbic acid Nutrition 0.000 claims description 3
- 239000011668 ascorbic acid Substances 0.000 claims description 3
- 229960005070 ascorbic acid Drugs 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- 229960001863 disopyramide phosphate Drugs 0.000 claims description 3
- CGDDQFMPGMYYQP-UHFFFAOYSA-N disopyramide phosphate Chemical compound OP(O)(O)=O.C=1C=CC=NC=1C(C(N)=O)(CCN(C(C)C)C(C)C)C1=CC=CC=C1 CGDDQFMPGMYYQP-UHFFFAOYSA-N 0.000 claims description 3
- 229920013819 hydroxyethyl ethylcellulose Polymers 0.000 claims description 3
- 239000004310 lactic acid Substances 0.000 claims description 3
- 235000014655 lactic acid Nutrition 0.000 claims description 3
- 125000005591 trimellitate group Chemical group 0.000 claims description 3
- 150000007513 acids Chemical class 0.000 claims description 2
- 229940100467 polyvinyl acetate phthalate Drugs 0.000 claims description 2
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 claims 2
- 235000015165 citric acid Nutrition 0.000 claims 2
- 229920003146 methacrylic ester copolymer Polymers 0.000 claims 2
- 238000012384 transportation and delivery Methods 0.000 abstract description 14
- 239000002245 particle Substances 0.000 abstract description 12
- 238000012377 drug delivery Methods 0.000 abstract description 11
- 239000004480 active ingredient Substances 0.000 abstract description 7
- 239000008280 blood Substances 0.000 abstract description 7
- 210000004369 blood Anatomy 0.000 abstract description 7
- 230000002045 lasting effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 38
- 238000009472 formulation Methods 0.000 description 30
- 239000003094 microcapsule Substances 0.000 description 28
- 239000011162 core material Substances 0.000 description 23
- 239000011324 bead Substances 0.000 description 21
- 238000004090 dissolution Methods 0.000 description 18
- 239000012530 fluid Substances 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- MKXZASYAUGDDCJ-SZMVWBNQSA-N LSM-2525 Chemical compound C1CCC[C@H]2[C@@]3([H])N(C)CC[C@]21C1=CC(OC)=CC=C1C3 MKXZASYAUGDDCJ-SZMVWBNQSA-N 0.000 description 13
- 229960001985 dextromethorphan Drugs 0.000 description 13
- 239000000463 material Substances 0.000 description 12
- 210000001035 gastrointestinal tract Anatomy 0.000 description 11
- 238000005507 spraying Methods 0.000 description 11
- 238000009792 diffusion process Methods 0.000 description 9
- 239000000454 talc Substances 0.000 description 8
- 235000012222 talc Nutrition 0.000 description 8
- 229910052623 talc Inorganic materials 0.000 description 8
- 230000004888 barrier function Effects 0.000 description 7
- 239000000872 buffer Substances 0.000 description 7
- 239000002775 capsule Substances 0.000 description 7
- 230000001079 digestive effect Effects 0.000 description 7
- 239000006185 dispersion Substances 0.000 description 7
- GDCRSXZBSIRSFR-UHFFFAOYSA-N ethyl prop-2-enoate;2-methylprop-2-enoic acid Chemical compound CC(=C)C(O)=O.CCOC(=O)C=C GDCRSXZBSIRSFR-UHFFFAOYSA-N 0.000 description 7
- 230000001225 therapeutic effect Effects 0.000 description 7
- 210000004051 gastric juice Anatomy 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000008199 coating composition Substances 0.000 description 4
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 4
- 238000006386 neutralization reaction Methods 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- 239000002861 polymer material Substances 0.000 description 4
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 4
- 229920000053 polysorbate 80 Polymers 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 229920001429 chelating resin Polymers 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000037406 food intake Effects 0.000 description 3
- 230000002496 gastric effect Effects 0.000 description 3
- 239000012729 immediate-release (IR) formulation Substances 0.000 description 3
- ZMRUPTIKESYGQW-UHFFFAOYSA-N propranolol hydrochloride Chemical compound [H+].[Cl-].C1=CC=C2C(OCC(O)CNC(C)C)=CC=CC2=C1 ZMRUPTIKESYGQW-UHFFFAOYSA-N 0.000 description 3
- 229920003134 Eudragit® polymer Polymers 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229940035676 analgesics Drugs 0.000 description 2
- 239000000730 antalgic agent Substances 0.000 description 2
- 239000003242 anti bacterial agent Substances 0.000 description 2
- 229940088710 antibiotic agent Drugs 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 235000010980 cellulose Nutrition 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005354 coacervation Methods 0.000 description 2
- 238000007922 dissolution test Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000029142 excretion Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 235000019359 magnesium stearate Nutrition 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000012907 medicinal substance Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000003359 percent control normalization Methods 0.000 description 2
- 239000008194 pharmaceutical composition Substances 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002459 sustained effect Effects 0.000 description 2
- 239000011782 vitamin Substances 0.000 description 2
- 235000013343 vitamin Nutrition 0.000 description 2
- 229940088594 vitamin Drugs 0.000 description 2
- 229930003231 vitamin Natural products 0.000 description 2
- JHPBZFOKBAGZBL-UHFFFAOYSA-N (3-hydroxy-2,2,4-trimethylpentyl) 2-methylprop-2-enoate Chemical compound CC(C)C(O)C(C)(C)COC(=O)C(C)=C JHPBZFOKBAGZBL-UHFFFAOYSA-N 0.000 description 1
- 101100352912 Caenorhabditis elegans tax-6 gene Proteins 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 206010012186 Delayed delivery Diseases 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 239000004348 Glyceryl diacetate Substances 0.000 description 1
- 102220570135 Histone PARylation factor 1_L30D_mutation Human genes 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 229920000168 Microcrystalline cellulose Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229920003081 Povidone K 30 Polymers 0.000 description 1
- 229920003082 Povidone K 90 Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000036765 blood level Effects 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 210000001072 colon Anatomy 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 238000013267 controlled drug release Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 229940099371 diacetylated monoglycerides Drugs 0.000 description 1
- 210000002249 digestive system Anatomy 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000011978 dissolution method Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000008298 dragée Substances 0.000 description 1
- 239000013583 drug formulation Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000012055 enteric layer Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000007903 gelatin capsule Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- 235000019443 glyceryl diacetate Nutrition 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 1
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 235000019813 microcrystalline cellulose Nutrition 0.000 description 1
- 239000008108 microcrystalline cellulose Substances 0.000 description 1
- 229940016286 microcrystalline cellulose Drugs 0.000 description 1
- 150000002814 niacins Chemical class 0.000 description 1
- 235000001968 nicotinic acid Nutrition 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000546 pharmaceutical excipient Substances 0.000 description 1
- 239000008363 phosphate buffer Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229960003712 propranolol Drugs 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 150000003839 salts Chemical group 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229940126585 therapeutic drug Drugs 0.000 description 1
- 231100001274 therapeutic index Toxicity 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/5073—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals having two or more different coatings optionally including drug-containing subcoatings
- A61K9/5078—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals having two or more different coatings optionally including drug-containing subcoatings with drug-free core
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/5084—Mixtures of one or more drugs in different galenical forms, at least one of which being granules, microcapsules or (coated) microparticles according to A61K9/16 or A61K9/50, e.g. for obtaining a specific release pattern or for combining different drugs
Landscapes
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- 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)
- Medicinal Preparation (AREA)
- Furan Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/332,154 US5026559A (en) | 1989-04-03 | 1989-04-03 | Sustained-release pharmaceutical preparation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD299946A5 true DD299946A5 (de) | 1992-05-14 |
Family
ID=23296943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD339325A DD299946A5 (de) | 1989-04-03 | 1990-04-02 | Verfahren zur Herstellung von pharmazeutischen Präparaten mit verzögerter Wirkstoffabgabe |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5026559A (hu) |
| EP (1) | EP0391518B1 (hu) |
| JP (1) | JPH02289512A (hu) |
| AR (1) | AR244088A1 (hu) |
| AU (1) | AU622526B2 (hu) |
| DD (1) | DD299946A5 (hu) |
| DE (1) | DE69003568T2 (hu) |
| HU (1) | HU214576B (hu) |
| MX (1) | MX166703B (hu) |
Families Citing this family (113)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5540945A (en) * | 1989-05-11 | 1996-07-30 | Chugai Seiyaku Kabushiki Kaisha | Pharmaceutical preparations for oral administration that are adapted to release the drug at appropriate sites in the intestines |
| IT1246382B (it) * | 1990-04-17 | 1994-11-18 | Eurand Int | Metodo per la cessione mirata e controllata di farmaci nell'intestino e particolarmente nel colon |
| US5188836A (en) * | 1990-07-27 | 1993-02-23 | Warner-Lambert Company | Sustained release formulations |
| US20040072757A1 (en) * | 1990-09-04 | 2004-04-15 | Cor Therapeutics, Inc. | Agents affecting thrombosis and hemostasis |
| GB9104854D0 (en) * | 1991-03-07 | 1991-04-17 | Reckitt & Colmann Prod Ltd | Sustained release compositions |
| NZ286242A (en) * | 1991-03-26 | 1997-11-24 | Csl Ltd | Use of veterinary implant as a single dose vaccination system: rupturable polymer film coating around core of active agent and water soluble excipient |
| US5225202A (en) * | 1991-09-30 | 1993-07-06 | E. R. Squibb & Sons, Inc. | Enteric coated pharmaceutical compositions |
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-
1989
- 1989-04-03 US US07/332,154 patent/US5026559A/en not_active Expired - Fee Related
-
1990
- 1990-01-30 HU HU90583A patent/HU214576B/hu not_active IP Right Cessation
- 1990-02-01 DE DE90301065T patent/DE69003568T2/de not_active Expired - Fee Related
- 1990-02-01 EP EP90301065A patent/EP0391518B1/en not_active Expired - Lifetime
- 1990-03-06 AU AU50792/90A patent/AU622526B2/en not_active Ceased
- 1990-03-16 AR AR90316398A patent/AR244088A1/es active
- 1990-03-22 JP JP2073152A patent/JPH02289512A/ja active Pending
- 1990-04-02 MX MX020144A patent/MX166703B/es unknown
- 1990-04-02 DD DD339325A patent/DD299946A5/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE69003568T2 (de) | 1994-02-10 |
| EP0391518B1 (en) | 1993-09-29 |
| EP0391518A2 (en) | 1990-10-10 |
| MX166703B (es) | 1993-01-28 |
| AU622526B2 (en) | 1992-04-09 |
| AU5079290A (en) | 1990-10-04 |
| HU214576B (hu) | 1998-04-28 |
| US5026559A (en) | 1991-06-25 |
| HU900583D0 (en) | 1990-04-28 |
| AR244088A1 (es) | 1993-10-29 |
| JPH02289512A (ja) | 1990-11-29 |
| HUT74088A (en) | 1996-11-28 |
| EP0391518A3 (en) | 1991-05-08 |
| DE69003568D1 (de) | 1993-11-04 |
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