Code of Federal Regulations > Title 21 > Chapter I > Part 520 - PART 520—ORAL DOSAGE FORM NEW ANIMAL DRUGS

U.S. Code of Federal Regulations

Regulations most recently checked for updates: Jan 21, 2026

§ 520.23 - Acepromazine.

§ 520.28 - Acetazolamide.

§ 520.35 - Afoxolaner, moxidectin, and pyrantel.

§ 520.38 - Albendazole oral dosage forms.

§ 520.38a - Albendazole suspension.

§ 520.38b - Albendazole paste.

§ 520.43 - Afoxolaner.

§ 520.48 - Altrenogest.

§ 520.62 - Aminopentamide.

§ 520.82 - Aminopropazine oral dosage forms.

§ 520.905c - Fenbendazole paste.

§ 520.905d - Fenbendazole powder.

§ 520.928 - Firocoxib tablets.

§ 520.929 - Firocoxib solution.

§ 520.930 - Firocoxib paste.

§ 520.955 - Florfenicol.

§ 520.960 - Flumethasone.

§ 520.970 - Flunixin.

§ 520.980 - Fluoxetine.

§ 520.998 - Fluralaner.

§ 520.1010 - Furosemide.

§ 520.82a - Aminopropazine.

§ 520.1044 - Gentamicin sulfate oral dosage forms.

§ 520.1044a - Gentamicin sulfate oral solution.

§ 520.1044b - Gentamicin sulfate pig pump oral solution.

§ 520.1044c - Gentamicin sulfate powder.

§ 520.1060 - Glucose and glycine.

§ 520.1084 - Grapiprant.

§ 520.1100 - Griseofulvin.

§ 520.1120 - Haloxon oral dosage forms.

§ 520.1120a - Haloxon drench.

§ 520.82b - Aminopropazine and neomycin.

§ 520.1120b - Haloxon boluses.

§ 520.1136 - Ilunocitinib.

§ 520.1150 - Imepitoin.

§ 520.1156 - Imidacloprid.

§ 520.1157 - Iodinated casein.

§ 520.1158 - Iodochlorhydroxyquin.

§ 520.1189 - Itraconazole.

§ 520.1192 - Ivermectin paste.

§ 520.1193 - Ivermectin tablets and chewables.

§ 520.1194 - Ivermectin meal.

§ 520.1195 - Ivermectin liquid.

§ 520.88 - Amoxicillin oral dosage forms.

§ 520.1196 - Ivermectin and pyrantel tablets.

§ 520.1197 - Ivermectin sustained-release bolus.

§ 520.1198 - Ivermectin and praziquantel paste.

§ 520.1199 - Ivermectin, pyrantel, and praziquantel tablets.

§ 520.1200 - Ivermectin, fenbendazole, and praziquantel tablets.

§ 520.1204 - Kanamycin, bismuth subcarbonate, activated attapulgite.

§ 520.1242 - Levamisole.

§ 520.1242a - Levamisole powder.

§ 520.1242b - Levamisol boluses or oblets.

§ 520.1242c - Levamisol and piperazine.

§ 520.88a - Amoxicillin trihydrate film-coated tablets.

§ 520.1242d - Levamisole resinate.

§ 520.1242e - Levamisole hydrochloride effervescent tablets.

§ 520.1242f - Levamisol gel.

§ 520.1242g - Levamisole resinate and famphur paste.

§ 520.1248 - Levothyroxine.

§ 520.1263 - Lincomycin.

§ 520.1263a - Lincomycin tablets and syrup.

§ 520.1263b - Lincomycin powder.

§ 520.1265 - Lincomycin and spectinomycin powder.

§ 520.1284 - Liothyronine.

§ 520.88b - Amoxicillin trihydrate for oral suspension.

§ 520.1286 - Lotilaner.

§ 520.1287 - Lotilaner, moxidectin, praziquantel, and pyrantel.

§ 520.1288 - Lufenuron tablets.

§ 520.1289 - Lufenuron suspension.

§ 520.1310 - Marbofloxacin.

§ 520.1315 - Maropitant.

§ 520.1320 - Mebendazole.

§ 520.1326 - Mebendazole and trichlorfon oral dosage forms.

§ 520.1326a - Mebendazole and trichlorfon powder.

§ 520.88c - Amoxicillin trihydrate oral suspension.

§ 520.1326b - Mebendazole and trichlorfon paste.

§ 520.1330 - Meclofenamic acid granules.

§ 520.1331 - Meclofenamic acid tablets.

§ 520.1341 - Megestrol.

§ 520.1367 - Meloxicam.

§ 520.1375 - Methimazole tablets.

§ 520.1376 - Methimazole solution.

§ 520.1380 - Methocarbamol.

§ 520.1408 - Methylprednisolone.

§ 520.1409 - Methylprednisolone and aspirin.

§ 520.1422 - Metoserpate hydrochloride.

§ 520.88d - Amoxicillin trihydrate soluble powder.

§ 520.1425 - Metronidazole.

§ 520.1430 - Mibolerone.

§ 520.1441 - Milbemycin.

§ 520.1443 - Milbemycin oxime and lufenuron.

§ 520.1445 - Milbemycin oxime and praziquantel.

§ 520.1447 - Milbemycin oxime, lufenuron, and praziquantel tablets.

§ 520.1450 - Morantel tartrate oral dosage forms.

§ 520.1450a - Morantel tartrate bolus.

§ 520.1450b - Morantel tartrate cartridge.

§ 520.88e - Amoxicillin trihydrate boluses.

§ 520.1450c - Morantel tartrate sustained-release trilaminate cylinder/sheet.

§ 520.1451 - Moxidectin tablets.

§ 520.1452 - Moxidectin gel.

§ 520.1453 - Moxidectin and praziquantel gel.

§ 520.1454 - Moxidectin solution.

§ 520.1468 - Naproxen.

§ 520.1484 - Neomycin.

§ 520.1510 - Nitenpyram.

§ 520.1604 - Oclacitinib.

§ 520.1615 - Omeprazole.

§ 520.1616 - Orbifloxacin tablets.

§ 520.88f - Amoxicillin trihydrate tablets.

§ 520.1618 - Orbifloxacin suspension.

§ 520.1628 - Oxfendazole powder and pellets.

§ 520.1629 - Oxfendazole paste.

§ 520.1630 - Oxfendazole suspension.

§ 520.1631 - Oxfendazole and trichlorfon paste.

§ 520.1638 - Oxibendazole.

§ 520.1660 - Oxytetracycline.

§ 520.1660a - [Reserved]

§ 520.1660b - Oxytetracycline capsules.

§ 520.88g - Amoxicillin and clavulanate potassium tablets.

§ 520.1660c - Oxytetracycline tablets.

§ 520.1660d - Oxytetracycline powder.

§ 520.1664 - Oxytetracycline and carbomycin.

§ 520.1696 - Penicillin.

§ 520.1696a - Penicillin G powder.

§ 520.1696c - Penicillin V tablets.

§ 520.1705 - Pergolide.

§ 520.1720 - Phenylbutazone oral dosage forms.

§ 520.1720a - Phenylbutazone tablets and boluses.

§ 520.1720b - Phenylbutazone granules.

§ 520.88h - Amoxicillin trihydrate and clavulanate potassium for oral suspension.

§ 520.1720c - Phenylbutazone paste.

§ 520.1720d - Phenylbutazone gel.

§ 520.1720e - Phenylbutazone powder.

§ 520.1760 - Phenylpropanolamine.

§ 520.1780 - Pimobendan tablets.

§ 520.1782 - Pimobendan solution.

§ 520.1802 - Piperazine-carbon disulfide complex oral dosage forms.

§ 520.1802a - Piperazine-carbon disulfide complex suspension.

§ 520.1802b - Piperazine-carbon disulfide complex boluses.

§ 520.1802c - Piperazine-carbon disulfide complex with phenothiazine suspension.

§ 520.90 - Ampicillin oral dosage forms.

§ 520.1803 - Piperazine citrate capsules.

§ 520.1805 - Piperazine phosphate with thenium closylate tablets.

§ 520.1806 - Piperazine suspension.

§ 520.1840 - Poloxalene.

§ 520.1855 - Ponazuril.

§ 520.1860 - Pradofloxacin.

§ 520.1870 - Praziquantel tablets.

§ 520.1871 - Praziquantel and pyrantel.

§ 520.1872 - Praziquantel, pyrantel pamoate, and febantel tablets.

§ 520.1880 - Prednisolone.

§ 520.90a - Ampicillin tablets.

§ 520.1892 - Pregabalin.

§ 520.1900 - Primidone.

§ 520.1920 - Prochlorperazine and isopropamide.

§ 520.1921 - Prochlorperazine, isopropamide, and neomycin.

§ 520.1962 - Promazine.

§ 520.2002 - Propiopromazine.

§ 520.2041 - Pyrantel pamoate chewable tablets.

§ 520.2042 - Pyrantel pamoate tablets.

§ 520.2043 - Pyrantel pamoate suspension.

§ 520.2044 - Pyrantel pamoate paste.

§ 520.90b - Ampicillin capsules.

§ 520.2045 - Pyrantel tartrate powder.

§ 520.2046 - Pyrantel tartrate pellets.

§ 520.2075 - Robenacoxib.

§ 520.2086 - Sarolaner.

§ 520.2090 - Sarolaner, moxidectin, and pyrantel.

§ 520.2098 - Selegiline.

§ 520.2100 - Selenium and vitamin E.

§ 520.2123 - Spectinomycin oral dosage forms.

§ 520.2123a - Spectinomycin tablets.

§ 520.2123b - Spectinomycin powder.

§ 520.90c - Ampicillin boluses.

§ 520.2123c - Spectinomycin solution.

§ 520.2130 - Spinosad.

§ 520.2134 - Spinosad and milbemycin.

§ 520.2138 - Spironolactone and benazepril.

§ 520.2150 - Stanozolol.

§ 520.2158 - Streptomycin.

§ 520.2184 - Sulfachloropyrazine.

§ 520.2200 - Sulfachlorpyridazine.

§ 520.2215 - Sulfadiazine/pyrimethamine suspension.

§ 520.2218 - Sulfamerazine, sulfamethazine, and sulfaquinoxaline powder.

§ 520.100 - Amprolium.

§ 520.2220 - Sulfadimethoxine oral dosage forms.

§ 520.2220a - Sulfadimethoxine oral solution and soluble powder.

§ 520.2220b - Sulfadimethoxine suspension.

§ 520.2220c - Sulfadimethoxine tablet.

§ 520.2220d - Sulfadimethoxine bolus.

§ 520.2220e - Sulfadimethoxine extended-release bolus.

§ 520.2220f - Sulfadimethoxine and ormetoprim tablet.

§ 520.2240 - Sulfaethoxypyridazine.

§ 520.2240a - Sulfaethoxypyridazine solution.

§ 520.2240b - Sulfaethoxypyridazine tablets.

§ 520.2260 - Sulfamethazine oral dosage forms.

§ 520.110 - Apramycin sulfate soluble powder.

§ 520.2260a - Sulfamethazine oblets and boluses.

§ 520.2260b - Sulfamethazine sustained-release boluses.

§ 520.2260c - Sulfamethazine sustained-release tablets.

§ 520.2261 - Sulfamethazine sodium oral dosage forms.

§ 520.2261a - Sulfamethazine solution.

§ 520.2261b - Sulfamethazine powder.

§ 520.2280 - Sulfamethizole and methenamine.

§ 520.2325 - Sulfaquinoxaline oral dosage forms.

§ 520.2325a - Sulfaquinoxaline powder and solution.

§ 520.2325b - Sulfaquinoxaline drench.

§ 520.154 - Bacitracin oral dosage forms.

§ 520.2330 - Sulfisoxazole tablets.

§ 520.2335 - Telmisartan.

§ 520.2340 - Tepoxalin.

§ 520.2345 - Tetracycline.

§ 520.2345a - Tetracycline capsules.

§ 520.2345b - Tetracycline tablets.

§ 520.2345c - Tetracycline boluses.

§ 520.2345d - Tetracycline powder.

§ 520.2345e - Tetracycline solution.

§ 520.2345f - Tetracycline phosphate complex and sodium novobiocin capsules.

§ 520.154a - Bacitracin methylenedisalicylate.

§ 520.2345g - Tetracycline hydrochloride and sodium novobiocin tablets.

§ 520.2345h - Tetracycline hydrochloride, sodium novobiocin, and prednisolone tablets.

§ 520.2362 - Thenium closylate.

§ 520.2382 - Thiabendazole and triclorfon.

§ 520.2455 - Tiamulin.

§ 520.2471 - Tilmicosin.

§ 520.2473 - Tioxidazole oral dosage forms.

§ 520.2473a - Tioxidazole granules.

§ 520.2473b - Tioxidazole paste.

§ 520.154b - Bacitracin methylenedisalicylate and streptomycin sulfate powder.

§ 520.2475 - Toceranib.

§ 520.2520 - Trichlorfon oral dosage forms.

§ 520.2520a - Trichlorfon and atropine.

§ 520.2520b - Trichlorfon boluses.

§ 520.2520c - Trichlorfon granules.

§ 520.2520d - Trichlorfon, phenothiazine, and piperazine.

§ 520.2582 - Triflupromazine.

§ 520.2598 - Trilostane.

§ 520.2604 - Trimeprazine and prednisolone tablets.

§ 520.2605 - Trimeprazine and prednisolone capsules.

§ 520.154c - Bacitracin zinc soluble powder.

§ 520.2610 - Trimethoprim and sulfadiazine tablets.

§ 520.2611 - Trimethoprim and sulfadiazine paste.

§ 520.2612 - Trimethoprim and sulfadiazine suspension.

§ 520.2613 - Trimethoprim and sulfadiazine powder.

§ 520.2640 - Tylosin.

§ 520.2645 - Tylvalosin.

§ 520.2654 - Velagliflozin.

§ 520.170 - Bexagliflozin.

§ 520.222 - Bunamidine hydrochloride.

§ 520.246 - Butorphanol tablets.

§ 520.260 - n-Butyl chloride.

§ 520.292 - Capromorelin.

§ 520.301 - Caramiphen ethanedisulfonate and ammonium chloride tablets.

§ 520.302 - Carnidazole tablets.

§ 520.304 - Carprofen.

§ 520.314 - Cefadroxil.

§ 520.370 - Cefpodoxime tablets.

§ 520.376 - Cephalexin.

§ 520.390 - Chloramphenicol oral dosage forms.

§ 520.390a - Chloramphenicol tablets.

§ 520.390b - Chloramphenicol capsules.

§ 520.390c - Chloramphenicol palmitate oral suspension.

§ 520.434 - Chlorphenesin carbamate tablets.

§ 520.441 - Chlortetracycline powder.

§ 520.443 - Chlortetracycline tablets and boluses.

§ 520.445 - Chlortetracycline and sulfamethazine powder.

§ 520.446 - Clindamycin capsules and tablets.

§ 520.447 - Clindamycin solution.

§ 520.455 - Clomipramine.

§ 520.462 - Clorsulon drench.

§ 520.522 - Cyclosporine.

§ 520.530 - Cythioate oral liquid.

§ 520.531 - Cythioate tablets.

§ 520.534 - Decoquinate.

§ 520.538 - Deracoxib.

§ 520.540 - Dexamethasone oral dosage forms.

§ 520.540a - Dexamethasone powder.

§ 520.540b - Dexamethasone tablets and boluses.

§ 520.540c - Dexamethasone chewable tablets.

§ 520.563 - Diatrizoate.

§ 520.581 - Dichlorophene tablets.

§ 520.596 - Dichlorvos powder.

§ 520.598 - Dichlorvos tablets.

§ 520.600 - Dichlorvos capsules and pellets.

§ 520.602 - Dichlorvos gel.

§ 520.606 - Diclazuril.

§ 520.608 - Dicloxacillin.

§ 520.620 - Diethylcarbamazine oral dosage forms.

§ 520.622 - Diethylcarbamazine citrate oral dosage forms.

§ 520.622a - Diethylcarbamazine citrate tablets.

§ 520.622b - Diethylcarbamazine citrate syrup.

§ 520.622c - Diethylcarbamazine citrate chewable tablets.

§ 520.623 - Diethylcarbamazine and oxibendazole chewable tablets.

§ 520.666 - Dirlotapide.

§ 520.763 - Dithiazanine oral dosage forms.

§ 520.763a - Dithiazanine tablets.

§ 520.763b - Dithiazanine powder.

§ 520.763c - Dithiazanine iodide and piperazine citrate suspension.

§ 520.766 - Domperidone.

§ 520.784 - Doxylamine.

§ 520.812 - Enrofloxacin.

§ 520.816 - Epsiprantel.

§ 520.823 - Erythromycin.

§ 520.852 - Estriol.

§ 520.863 - Ethylisobutrazine.

§ 520.903 - Febantel oral dosage forms.

§ 520.903a - Febantel paste.

§ 520.903b - Febantel suspension.

§ 520.903c - Febantel and praziquantel paste.

§ 520.903d - Febantel tablets.

§ 520.905 - Fenbendazole oral dosage forms.

§ 520.905a - Fenbendazole suspension.

§ 520.905b - Fenbendazole granules.