---
kind: "unit"
title: "21"
title_heading: "Food and Drugs"
key: "chI/subchE/part520"
level: "part"
label: "Part 520"
heading: "Oral Dosage Form New Animal Drugs"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/21/chI-subchE-part520"
sections_count: 320
---

# Part 520 — Oral Dosage Form New Animal Drugs

Title 21 C.F.R. — Food and Drugs › Chapter I — Food and Drug Administration, Department of Health and Human Services › Subchapter E — Animal Drugs, Feeds, and Related Products

## Sections

- [§520.23. Acepromazine.](/cfr/21/520.23.md)
- [§520.28. Acetazolamide.](/cfr/21/520.28.md)
- [§520.35. Afoxolaner, moxidectin, and pyrantel.](/cfr/21/520.35.md)
- [§520.38. Albendazole oral dosage forms.](/cfr/21/520.38.md)
- [§520.38a. Albendazole suspension.](/cfr/21/520.38a.md)
- [§520.38b. Albendazole paste.](/cfr/21/520.38b.md)
- [§520.43. Afoxolaner.](/cfr/21/520.43.md)
- [§520.48. Altrenogest.](/cfr/21/520.48.md)
- [§520.62. Aminopentamide.](/cfr/21/520.62.md)
- [§520.82. Aminopropazine oral dosage forms.](/cfr/21/520.82.md)
- [§520.82a. Aminopropazine.](/cfr/21/520.82a.md)
- [§520.82b. Aminopropazine and neomycin.](/cfr/21/520.82b.md)
- [§520.88. Amoxicillin oral dosage forms.](/cfr/21/520.88.md)
- [§520.88a. Amoxicillin trihydrate film-coated tablets.](/cfr/21/520.88a.md)
- [§520.88b. Amoxicillin trihydrate for oral suspension.](/cfr/21/520.88b.md)
- [§520.88c. Amoxicillin trihydrate oral suspension.](/cfr/21/520.88c.md)
- [§520.88d. Amoxicillin trihydrate soluble powder.](/cfr/21/520.88d.md)
- [§520.88e. Amoxicillin trihydrate boluses.](/cfr/21/520.88e.md)
- [§520.88f. Amoxicillin trihydrate tablets.](/cfr/21/520.88f.md)
- [§520.88g. Amoxicillin and clavulanate potassium tablets.](/cfr/21/520.88g.md)
- [§520.88h. Amoxicillin trihydrate and clavulanate potassium for oral suspension.](/cfr/21/520.88h.md)
- [§520.90. Ampicillin oral dosage forms.](/cfr/21/520.90.md)
- [§520.90a. Ampicillin tablets.](/cfr/21/520.90a.md)
- [§520.90b. Ampicillin capsules.](/cfr/21/520.90b.md)
- [§520.90c. Ampicillin boluses.](/cfr/21/520.90c.md)
- [§520.100. Amprolium.](/cfr/21/520.100.md)
- [§520.110. Apramycin sulfate soluble powder.](/cfr/21/520.110.md)
- [§520.136. Atinvicitinib tablets.](/cfr/21/520.136.md)
- [§520.154. Bacitracin oral dosage forms.](/cfr/21/520.154.md)
- [§520.154a. Bacitracin methylenedisalicylate.](/cfr/21/520.154a.md)
- [§520.154b. Bacitracin methylenedisalicylate and streptomycin sulfate powder.](/cfr/21/520.154b.md)
- [§520.154c. Bacitracin zinc soluble powder.](/cfr/21/520.154c.md)
- [§520.170. Bexagliflozin.](/cfr/21/520.170.md)
- [§520.222. Bunamidine hydrochloride.](/cfr/21/520.222.md)
- [§520.246. Butorphanol tablets.](/cfr/21/520.246.md)
- [§520.260. n -Butyl chloride.](/cfr/21/520.260.md)
- [§520.292. Capromorelin.](/cfr/21/520.292.md)
- [§520.301. Caramiphen ethanedisulfonate and ammonium chloride tablets.](/cfr/21/520.301.md)
- [§520.302. Carnidazole tablets.](/cfr/21/520.302.md)
- [§520.304. Carprofen.](/cfr/21/520.304.md)
- [§520.314. Cefadroxil.](/cfr/21/520.314.md)
- [§520.370. Cefpodoxime tablets.](/cfr/21/520.370.md)
- [§520.376. Cephalexin.](/cfr/21/520.376.md)
- [§520.390. Chloramphenicol oral dosage forms.](/cfr/21/520.390.md)
- [§520.390a. Chloramphenicol tablets.](/cfr/21/520.390a.md)
- [§520.390b. Chloramphenicol capsules.](/cfr/21/520.390b.md)
- [§520.390c. Chloramphenicol palmitate oral suspension.](/cfr/21/520.390c.md)
- [§520.434. Chlorphenesin carbamate tablets.](/cfr/21/520.434.md)
- [§520.441. Chlortetracycline powder.](/cfr/21/520.441.md)
- [§520.443. Chlortetracycline tablets and boluses.](/cfr/21/520.443.md)
- [§520.445. Chlortetracycline and sulfamethazine powder.](/cfr/21/520.445.md)
- [§520.446. Clindamycin capsules and tablets.](/cfr/21/520.446.md)
- [§520.447. Clindamycin solution.](/cfr/21/520.447.md)
- [§520.452. Clenbuterol syrup.](/cfr/21/520.452.md)
- [§520.455. Clomipramine.](/cfr/21/520.455.md)
- [§520.462. Clorsulon drench.](/cfr/21/520.462.md)
- [§520.522. Cyclosporine.](/cfr/21/520.522.md)
- [§520.530. Cythioate oral liquid.](/cfr/21/520.530.md)
- [§520.531. Cythioate tablets.](/cfr/21/520.531.md)
- [§520.534. Decoquinate.](/cfr/21/520.534.md)
- [§520.538. Deracoxib.](/cfr/21/520.538.md)
- [§520.540. Dexamethasone oral dosage forms.](/cfr/21/520.540.md)
- [§520.540a. Dexamethasone powder.](/cfr/21/520.540a.md)
- [§520.540b. Dexamethasone tablets and boluses.](/cfr/21/520.540b.md)
- [§520.540c. Dexamethasone chewable tablets.](/cfr/21/520.540c.md)
- [§520.563. Diatrizoate.](/cfr/21/520.563.md)
- [§520.580. Dichlorophene and toluene.](/cfr/21/520.580.md)
- [§520.581. Dichlorophene tablets.](/cfr/21/520.581.md)
- [§520.596. Dichlorvos powder.](/cfr/21/520.596.md)
- [§520.598. Dichlorvos tablets.](/cfr/21/520.598.md)
- [§520.600. Dichlorvos capsules and pellets.](/cfr/21/520.600.md)
- [§520.602. Dichlorvos gel.](/cfr/21/520.602.md)
- [§520.606. Diclazuril.](/cfr/21/520.606.md)
- [§520.608. Dicloxacillin.](/cfr/21/520.608.md)
- [§520.620. Diethylcarbamazine oral dosage forms.](/cfr/21/520.620.md)
- [§520.622. Diethylcarbamazine citrate oral dosage forms.](/cfr/21/520.622.md)
- [§520.622a. Diethylcarbamazine citrate tablets.](/cfr/21/520.622a.md)
- [§520.622b. Diethylcarbamazine citrate syrup.](/cfr/21/520.622b.md)
- [§520.622c. Diethylcarbamazine citrate chewable tablets.](/cfr/21/520.622c.md)
- [§520.623. Diethylcarbamazine and oxibendazole chewable tablets.](/cfr/21/520.623.md)
- [§520.666. Dirlotapide.](/cfr/21/520.666.md)
- [§520.763. Dithiazanine oral dosage forms.](/cfr/21/520.763.md)
- [§520.763a. Dithiazanine tablets.](/cfr/21/520.763a.md)
- [§520.763b. Dithiazanine powder.](/cfr/21/520.763b.md)
- [§520.763c. Dithiazanine iodide and piperazine citrate suspension.](/cfr/21/520.763c.md)
- [§520.766. Domperidone.](/cfr/21/520.766.md)
- [§520.784. Doxylamine.](/cfr/21/520.784.md)
- [§520.812. Enrofloxacin.](/cfr/21/520.812.md)
- [§520.816. Epsiprantel.](/cfr/21/520.816.md)
- [§520.823. Erythromycin.](/cfr/21/520.823.md)
- [§520.852. Estriol.](/cfr/21/520.852.md)
- [§520.863. Ethylisobutrazine.](/cfr/21/520.863.md)
- [§520.903. Febantel oral dosage forms.](/cfr/21/520.903.md)
- [§520.903a. Febantel paste.](/cfr/21/520.903a.md)
- [§520.903b. Febantel suspension.](/cfr/21/520.903b.md)
- [§520.903c. Febantel and praziquantel paste.](/cfr/21/520.903c.md)
- [§520.903d. Febantel tablets.](/cfr/21/520.903d.md)
- [§520.905. Fenbendazole oral dosage forms.](/cfr/21/520.905.md)
- [§520.905a. Fenbendazole suspension.](/cfr/21/520.905a.md)
- [§520.905b. Fenbendazole granules.](/cfr/21/520.905b.md)
- [§520.905c. Fenbendazole paste.](/cfr/21/520.905c.md)
- [§520.905d. Fenbendazole powder.](/cfr/21/520.905d.md)
- [§520.928. Firocoxib tablets.](/cfr/21/520.928.md)
- [§520.929. Firocoxib solution.](/cfr/21/520.929.md)
- [§520.930. Firocoxib paste.](/cfr/21/520.930.md)
- [§520.955. Florfenicol.](/cfr/21/520.955.md)
- [§520.960. Flumethasone.](/cfr/21/520.960.md)
- [§520.970. Flunixin.](/cfr/21/520.970.md)
- [§520.980. Fluoxetine.](/cfr/21/520.980.md)
- [§520.998. Fluralaner chewable tablets.](/cfr/21/520.998.md)
- [§520.999. Fluralaner oral solution.](/cfr/21/520.999.md)
- [§520.1010. Furosemide.](/cfr/21/520.1010.md)
- [§520.1044. Gentamicin sulfate oral dosage forms.](/cfr/21/520.1044.md)
- [§520.1044a. Gentamicin sulfate oral solution.](/cfr/21/520.1044a.md)
- [§520.1044b. Gentamicin sulfate pig pump oral solution.](/cfr/21/520.1044b.md)
- [§520.1044c. Gentamicin sulfate powder.](/cfr/21/520.1044c.md)
- [§520.1060. Glucose and glycine.](/cfr/21/520.1060.md)
- [§520.1084. Grapiprant.](/cfr/21/520.1084.md)
- [§520.1100. Griseofulvin.](/cfr/21/520.1100.md)
- [§520.1120. Haloxon oral dosage forms.](/cfr/21/520.1120.md)
- [§520.1120a. Haloxon drench.](/cfr/21/520.1120a.md)
- [§520.1120b. Haloxon boluses.](/cfr/21/520.1120b.md)
- [§520.1136. Ilunocitinib.](/cfr/21/520.1136.md)
- [§520.1150. Imepitoin.](/cfr/21/520.1150.md)
- [§520.1156. Imidacloprid.](/cfr/21/520.1156.md)
- [§520.1157. Iodinated casein.](/cfr/21/520.1157.md)
- [§520.1158. Iodochlorhydroxyquin.](/cfr/21/520.1158.md)
- [§520.1189. Itraconazole.](/cfr/21/520.1189.md)
- [§520.1192. Ivermectin paste.](/cfr/21/520.1192.md)
- [§520.1193. Ivermectin tablets and chewables.](/cfr/21/520.1193.md)
- [§520.1194. Ivermectin meal.](/cfr/21/520.1194.md)
- [§520.1195. Ivermectin liquid.](/cfr/21/520.1195.md)
- [§520.1196. Ivermectin and pyrantel tablets.](/cfr/21/520.1196.md)
- [§520.1197. Ivermectin sustained-release bolus.](/cfr/21/520.1197.md)
- [§520.1198. Ivermectin and praziquantel paste.](/cfr/21/520.1198.md)
- [§520.1199. Ivermectin, pyrantel, and praziquantel tablets.](/cfr/21/520.1199.md)
- [§520.1200. Ivermectin, fenbendazole, and praziquantel tablets.](/cfr/21/520.1200.md)
- [§520.1204. Kanamycin, bismuth subcarbonate, activated attapulgite.](/cfr/21/520.1204.md)
- [§520.1242. Levamisole.](/cfr/21/520.1242.md)
- [§520.1242a. Levamisole powder.](/cfr/21/520.1242a.md)
- [§520.1242b. Levamisol boluses or oblets.](/cfr/21/520.1242b.md)
- [§520.1242c. Levamisol and piperazine.](/cfr/21/520.1242c.md)
- [§520.1242d. Levamisole resinate.](/cfr/21/520.1242d.md)
- [§520.1242e. Levamisole hydrochloride effervescent tablets.](/cfr/21/520.1242e.md)
- [§520.1242f. Levamisol gel.](/cfr/21/520.1242f.md)
- [§520.1242g. Levamisole resinate and famphur paste.](/cfr/21/520.1242g.md)
- [§520.1248. Levothyroxine.](/cfr/21/520.1248.md)
- [§520.1263. Lincomycin.](/cfr/21/520.1263.md)
- [§520.1263a. Lincomycin tablets and syrup.](/cfr/21/520.1263a.md)
- [§520.1263b. Lincomycin hydrochloride soluble powder.](/cfr/21/520.1263b.md)
- [§520.1265. Lincomycin and spectinomycin powder.](/cfr/21/520.1265.md)
- [§520.1284. Liothyronine.](/cfr/21/520.1284.md)
- [§520.1286. Lotilaner.](/cfr/21/520.1286.md)
- [§520.1287. Lotilaner, moxidectin, praziquantel, and pyrantel.](/cfr/21/520.1287.md)
- [§520.1288. Lufenuron tablets.](/cfr/21/520.1288.md)
- [§520.1289. Lufenuron suspension.](/cfr/21/520.1289.md)
- [§520.1310. Marbofloxacin.](/cfr/21/520.1310.md)
- [§520.1315. Maropitant.](/cfr/21/520.1315.md)
- [§520.1320. Mebendazole.](/cfr/21/520.1320.md)
- [§520.1326. Mebendazole and trichlorfon oral dosage forms.](/cfr/21/520.1326.md)
- [§520.1326a. Mebendazole and trichlorfon powder.](/cfr/21/520.1326a.md)
- [§520.1326b. Mebendazole and trichlorfon paste.](/cfr/21/520.1326b.md)
- [§520.1330. Meclofenamic acid granules.](/cfr/21/520.1330.md)
- [§520.1331. Meclofenamic acid tablets.](/cfr/21/520.1331.md)
- [§520.1341. Megestrol.](/cfr/21/520.1341.md)
- [§520.1367. Meloxicam.](/cfr/21/520.1367.md)
- [§520.1375. Methimazole tablets.](/cfr/21/520.1375.md)
- [§520.1376. Methimazole solution.](/cfr/21/520.1376.md)
- [§520.1380. Methocarbamol.](/cfr/21/520.1380.md)
- [§520.1408. Methylprednisolone.](/cfr/21/520.1408.md)
- [§520.1409. Methylprednisolone and aspirin.](/cfr/21/520.1409.md)
- [§520.1422. Metoserpate hydrochloride.](/cfr/21/520.1422.md)
- [§520.1425. Metronidazole.](/cfr/21/520.1425.md)
- [§520.1430. Mibolerone.](/cfr/21/520.1430.md)
- [§520.1441. Milbemycin.](/cfr/21/520.1441.md)
- [§520.1443. Milbemycin oxime and lufenuron.](/cfr/21/520.1443.md)
- [§520.1445. Milbemycin oxime and praziquantel.](/cfr/21/520.1445.md)
- [§520.1447. Milbemycin oxime, lufenuron, and praziquantel tablets.](/cfr/21/520.1447.md)
- [§520.1450. Morantel tartrate oral dosage forms.](/cfr/21/520.1450.md)
- [§520.1450a. Morantel tartrate bolus.](/cfr/21/520.1450a.md)
- [§520.1450b. Morantel tartrate cartridge.](/cfr/21/520.1450b.md)
- [§520.1450c. Morantel tartrate sustained-release trilaminate cylinder/sheet.](/cfr/21/520.1450c.md)
- [§520.1451. Moxidectin tablets.](/cfr/21/520.1451.md)
- [§520.1452. Moxidectin gel.](/cfr/21/520.1452.md)
- [§520.1453. Moxidectin and praziquantel gel.](/cfr/21/520.1453.md)
- [§520.1454. Moxidectin solution.](/cfr/21/520.1454.md)
- [§520.1468. Naproxen.](/cfr/21/520.1468.md)
- [§520.1484. Neomycin.](/cfr/21/520.1484.md)
- [§520.1510. Nitenpyram.](/cfr/21/520.1510.md)
- [§520.1604. Oclacitinib.](/cfr/21/520.1604.md)
- [§520.1615. Omeprazole.](/cfr/21/520.1615.md)
- [§520.1616. Orbifloxacin tablets.](/cfr/21/520.1616.md)
- [§520.1618. Orbifloxacin suspension.](/cfr/21/520.1618.md)
- [§520.1628. Oxfendazole powder and pellets.](/cfr/21/520.1628.md)
- [§520.1629. Oxfendazole paste.](/cfr/21/520.1629.md)
- [§520.1630. Oxfendazole suspension.](/cfr/21/520.1630.md)
- [§520.1631. Oxfendazole and trichlorfon paste.](/cfr/21/520.1631.md)
- [§520.1638. Oxibendazole.](/cfr/21/520.1638.md)
- [§520.1660. Oxytetracycline.](/cfr/21/520.1660.md)
- [§520.1660a. Reserved](/cfr/21/520.1660a.md)
- [§520.1660b. Oxytetracycline capsules.](/cfr/21/520.1660b.md)
- [§520.1660c. Oxytetracycline tablets.](/cfr/21/520.1660c.md)
- [§520.1660d. Oxytetracycline powder.](/cfr/21/520.1660d.md)
- [§520.1664. Oxytetracycline and carbomycin.](/cfr/21/520.1664.md)
- [§520.1696. Penicillin.](/cfr/21/520.1696.md)
- [§520.1696a. Penicillin G powder.](/cfr/21/520.1696a.md)
- [§520.1696c. Penicillin V tablets.](/cfr/21/520.1696c.md)
- [§520.1705. Pergolide.](/cfr/21/520.1705.md)
- [§520.1720. Phenylbutazone oral dosage forms.](/cfr/21/520.1720.md)
- [§520.1720a. Phenylbutazone tablets and boluses.](/cfr/21/520.1720a.md)
- [§520.1720b. Phenylbutazone granules.](/cfr/21/520.1720b.md)
- [§520.1720c. Phenylbutazone paste.](/cfr/21/520.1720c.md)
- [§520.1720d. Phenylbutazone gel.](/cfr/21/520.1720d.md)
- [§520.1720e. Phenylbutazone powder.](/cfr/21/520.1720e.md)
- [§520.1760. Phenylpropanolamine.](/cfr/21/520.1760.md)
- [§520.1780. Pimobendan tablets.](/cfr/21/520.1780.md)
- [§520.1782. Pimobendan solution.](/cfr/21/520.1782.md)
- [§520.1802. Piperazine-carbon disulfide complex oral dosage forms.](/cfr/21/520.1802.md)
- [§520.1802a. Piperazine-carbon disulfide complex suspension.](/cfr/21/520.1802a.md)
- [§520.1802b. Piperazine-carbon disulfide complex boluses.](/cfr/21/520.1802b.md)
- [§520.1802c. Piperazine-carbon disulfide complex with phenothiazine suspension.](/cfr/21/520.1802c.md)
- [§520.1803. Piperazine citrate capsules.](/cfr/21/520.1803.md)
- [§520.1805. Piperazine phosphate with thenium closylate tablets.](/cfr/21/520.1805.md)
- [§520.1806. Piperazine suspension.](/cfr/21/520.1806.md)
- [§520.1840. Poloxalene.](/cfr/21/520.1840.md)
- [§520.1855. Ponazuril.](/cfr/21/520.1855.md)
- [§520.1858. Potassium bromide chewable tablets.](/cfr/21/520.1858.md)
- [§520.1860. Pradofloxacin.](/cfr/21/520.1860.md)
- [§520.1870. Praziquantel tablets.](/cfr/21/520.1870.md)
- [§520.1871. Praziquantel and pyrantel.](/cfr/21/520.1871.md)
- [§520.1872. Praziquantel, pyrantel pamoate, and febantel tablets.](/cfr/21/520.1872.md)
- [§520.1880. Prednisolone.](/cfr/21/520.1880.md)
- [§520.1892. Pregabalin.](/cfr/21/520.1892.md)
- [§520.1900. Primidone.](/cfr/21/520.1900.md)
- [§520.1920. Prochlorperazine and isopropamide.](/cfr/21/520.1920.md)
- [§520.1921. Prochlorperazine, isopropamide, and neomycin.](/cfr/21/520.1921.md)
- [§520.1962. Promazine.](/cfr/21/520.1962.md)
- [§520.2002. Propiopromazine.](/cfr/21/520.2002.md)
- [§520.2041. Pyrantel pamoate chewable tablets.](/cfr/21/520.2041.md)
- [§520.2042. Pyrantel pamoate tablets.](/cfr/21/520.2042.md)
- [§520.2043. Pyrantel pamoate suspension.](/cfr/21/520.2043.md)
- [§520.2044. Pyrantel pamoate paste.](/cfr/21/520.2044.md)
- [§520.2045. Pyrantel tartrate powder.](/cfr/21/520.2045.md)
- [§520.2046. Pyrantel tartrate pellets.](/cfr/21/520.2046.md)
- [§520.2075. Robenacoxib.](/cfr/21/520.2075.md)
- [§520.2086. Sarolaner.](/cfr/21/520.2086.md)
- [§520.2090. Sarolaner, moxidectin, and pyrantel.](/cfr/21/520.2090.md)
- [§520.2098. Selegiline.](/cfr/21/520.2098.md)
- [§520.2100. Selenium and vitamin E.](/cfr/21/520.2100.md)
- [§520.2123. Spectinomycin oral dosage forms.](/cfr/21/520.2123.md)
- [§520.2123a. Spectinomycin tablets.](/cfr/21/520.2123a.md)
- [§520.2123b. Spectinomycin powder.](/cfr/21/520.2123b.md)
- [§520.2123c. Spectinomycin solution.](/cfr/21/520.2123c.md)
- [§520.2130. Spinosad.](/cfr/21/520.2130.md)
- [§520.2134. Spinosad and milbemycin.](/cfr/21/520.2134.md)
- [§520.2138. Spironolactone and benazepril.](/cfr/21/520.2138.md)
- [§520.2150. Stanozolol.](/cfr/21/520.2150.md)
- [§520.2158. Streptomycin.](/cfr/21/520.2158.md)
- [§520.2184. Sulfachloropyrazine.](/cfr/21/520.2184.md)
- [§520.2200. Sulfachlorpyridazine.](/cfr/21/520.2200.md)
- [§520.2215. Sulfadiazine/pyrimethamine suspension.](/cfr/21/520.2215.md)
- [§520.2218. Sulfamerazine, sulfamethazine, and sulfaquinoxaline powder.](/cfr/21/520.2218.md)
- [§520.2220. Sulfadimethoxine oral dosage forms.](/cfr/21/520.2220.md)
- [§520.2220a. Sulfadimethoxine oral solution and soluble powder.](/cfr/21/520.2220a.md)
- [§520.2220b. Sulfadimethoxine suspension.](/cfr/21/520.2220b.md)
- [§520.2220c. Sulfadimethoxine tablet.](/cfr/21/520.2220c.md)
- [§520.2220d. Sulfadimethoxine bolus.](/cfr/21/520.2220d.md)
- [§520.2220e. Sulfadimethoxine extended-release bolus.](/cfr/21/520.2220e.md)
- [§520.2220f. Sulfadimethoxine and ormetoprim tablet.](/cfr/21/520.2220f.md)
- [§520.2240. Sulfaethoxypyridazine.](/cfr/21/520.2240.md)
- [§520.2240a. Sulfaethoxypyridazine solution.](/cfr/21/520.2240a.md)
- [§520.2240b. Sulfaethoxypyridazine tablets.](/cfr/21/520.2240b.md)
- [§520.2260. Sulfamethazine oral dosage forms.](/cfr/21/520.2260.md)
- [§520.2260a. Sulfamethazine oblets and boluses.](/cfr/21/520.2260a.md)
- [§520.2260b. Sulfamethazine sustained-release boluses.](/cfr/21/520.2260b.md)
- [§520.2260c. Sulfamethazine sustained-release tablets.](/cfr/21/520.2260c.md)
- [§520.2261. Sulfamethazine sodium oral dosage forms.](/cfr/21/520.2261.md)
- [§520.2261a. Sulfamethazine solution.](/cfr/21/520.2261a.md)
- [§520.2261b. Sulfamethazine powder.](/cfr/21/520.2261b.md)
- [§520.2280. Sulfamethizole and methenamine.](/cfr/21/520.2280.md)
- [§520.2325. Sulfaquinoxaline oral dosage forms.](/cfr/21/520.2325.md)
- [§520.2325a. Sulfaquinoxaline powder and solution.](/cfr/21/520.2325a.md)
- [§520.2325b. Sulfaquinoxaline drench.](/cfr/21/520.2325b.md)
- [§520.2330. Sulfisoxazole tablets.](/cfr/21/520.2330.md)
- [§520.2335. Telmisartan.](/cfr/21/520.2335.md)
- [§520.2340. Tepoxalin.](/cfr/21/520.2340.md)
- [§520.2345. Tetracycline.](/cfr/21/520.2345.md)
- [§520.2345a. Tetracycline capsules.](/cfr/21/520.2345a.md)
- [§520.2345b. Tetracycline tablets.](/cfr/21/520.2345b.md)
- [§520.2345c. Tetracycline boluses.](/cfr/21/520.2345c.md)
- [§520.2345d. Tetracycline powder.](/cfr/21/520.2345d.md)
- [§520.2345e. Tetracycline solution.](/cfr/21/520.2345e.md)
- [§520.2345f. Tetracycline phosphate complex and sodium novobiocin capsules.](/cfr/21/520.2345f.md)
- [§520.2345g. Tetracycline hydrochloride and sodium novobiocin tablets.](/cfr/21/520.2345g.md)
- [§520.2345h. Tetracycline hydrochloride, sodium novobiocin, and prednisolone tablets.](/cfr/21/520.2345h.md)
- [§520.2362. Thenium closylate.](/cfr/21/520.2362.md)
- [§520.2382. Thiabendazole and triclorfon.](/cfr/21/520.2382.md)
- [§520.2455. Tiamulin.](/cfr/21/520.2455.md)
- [§520.2471. Tilmicosin.](/cfr/21/520.2471.md)
- [§520.2473. Tioxidazole oral dosage forms.](/cfr/21/520.2473.md)
- [§520.2473a. Tioxidazole granules.](/cfr/21/520.2473a.md)
- [§520.2473b. Tioxidazole paste.](/cfr/21/520.2473b.md)
- [§520.2475. Toceranib.](/cfr/21/520.2475.md)
- [§520.2520. Trichlorfon oral dosage forms.](/cfr/21/520.2520.md)
- [§520.2520a. Trichlorfon and atropine.](/cfr/21/520.2520a.md)
- [§520.2520b. Trichlorfon boluses.](/cfr/21/520.2520b.md)
- [§520.2520c. Trichlorfon granules.](/cfr/21/520.2520c.md)
- [§520.2520d. Trichlorfon, phenothiazine, and piperazine.](/cfr/21/520.2520d.md)
- [§520.2582. Triflupromazine.](/cfr/21/520.2582.md)
- [§520.2598. Trilostane.](/cfr/21/520.2598.md)
- [§520.2604. Trimeprazine and prednisolone tablets.](/cfr/21/520.2604.md)
- [§520.2605. Trimeprazine and prednisolone capsules.](/cfr/21/520.2605.md)
- [§520.2610. Trimethoprim and sulfadiazine tablets.](/cfr/21/520.2610.md)
- [§520.2611. Trimethoprim and sulfadiazine paste.](/cfr/21/520.2611.md)
- [§520.2612. Trimethoprim and sulfadiazine suspension.](/cfr/21/520.2612.md)
- [§520.2613. Trimethoprim and sulfadiazine powder.](/cfr/21/520.2613.md)
- [§520.2640. Tylosin.](/cfr/21/520.2640.md)
- [§520.2645. Tylvalosin.](/cfr/21/520.2645.md)
- [§520.2654. Velagliflozin.](/cfr/21/520.2654.md)
- [§520.2700. Verdinexor tablets.](/cfr/21/520.2700.md)