| N | ||
| Nabumetone | Relafen | |
| Nadolol | Corgard | |
| Nafcillin Sodium | Nafeil, Nallpen, Unipen | |
| Nalbuphine HCI | Nubain | |
| Nalidixic Acid | Neg-Grarn | |
| Naloxone HCI | Narcan | |
| Nandrolone Decanoate | Androlone-D, Deca-Durabolin | |
| Nandrolone Phenpropionate | Durabolin, Hybolin | |
| Naphazoline HCI | Albalon, Privine, Vasocon | |
| Naproxen | Naprosyn | |
| Naproxen Sodium | Aleve, Anaprox | |
| Natamycin | Natacyn | |
| Nedocromil Sodium | Tilade | |
| Neomycin Sulfate | Mycifradin | |
| Neostigmine | Prostigmin | |
| Niacin (Nicotinic Acid) | Nicobid, Nicolar, Nicotinex | |
| Nicardipine HCI | Cardene | |
| Niclosamide | Niclocide | |
| Nicotine Transdermal | Habitrol, Nicoderm, Prostep | |
| Nicotinic Acid (Niacin) | Nicobid, Nicolar, Nicotinex | |
| Nifedipine | Procardia, Adalat | |
| Nimodipine | Nimotop | |
| Nitrofurantoin | Furadantin | |
| Nitrofurantoin Macrocrystals | Macrobid, Macrodantin | |
| Nitrogen Mustard (Mechlorethamine) | Mustargen, HN2 | |
| Nitroglycerin | Minitran, Nitro-Bid, Nitrostat, Nitro-Dur, | |
| Transderm-Nitro, Tridil | ||
| Nitroprusside Sodium | Nipride, Nitropress | |
| Nizatidine | Axid | |
| Norepinephrine Bitartrate | Levophed | |
| Norethindrone | Norlutin | |
| Norethindrone Acetate | Aygestin, Norlutate | |
| Norfloxacin | Noroxin, Chibroxin | |
| Nortriptyline HCI | Aventyl, Pamelor | |
| Novobiocin | Albamycin | |
| Nystatin | Mycostatin, Nilstat | |
| Nystatin & Triamcinolone | Mycagen 11, Mycolog 11 |