| Title |
| 241 Antipyrine, Benzocaine, and Phenylephrine Hydrochloride Otic Solution |
| 242 Antivenin (Crotalidae) Polyvalent |
| 243 Antivenin (Latrodectus mactans) |
| 244 Antivenin (Micrurus Fulvius) |
| 245 Apomorphine Hydrochloride |
| 246 Apomorphine Hydrochloride Tablets |
| 247 Apraclonidine Hydrochloride |
| 248 Apraclonidine Ophthalmic Solution |
| 249 Arginine |
| 250 Arginine Hydrochloride |
| 251 Arginine Hydrochloride Injection |
| 252 Ascorbic Acid |
| 253 Ascorbic Acid Injection |
| 254 Ascorbic Acid Oral Solution |
| 255 Ascorbic Acid Tablets |
| 256 Aspirin |
| 257 Aspirin Boluses |
| 258 Aspirin Capsules |
| 259 Aspirin Delayed-Release Capsules |
| 260 Aspirin Suppositories |
| 261 Aspirin Tablets |
| 262 Aspirin Delayed-Release Tablets |
| 263 Aspirin Effervescent Tablets for Oral Solution |
| 264 Aspirin Extended-Release Tablets |
| 265 Aspirin, Alumina, and Magnesia Tablets |
| 266 Aspirin, Alumina, and Magnesium Oxide Tablets |
| 267 Aspirin, Caffeine, and Dihydrocodeine Bitartrate Capsules |
| 268 Aspirin and Codeine Phosphate Tablets |
| 269 Aspirin, Codeine Phosphate, Alumina, and Magnesia Tablets |
| 270 Astemizole |
