SERZONE (nefazodone hydrochloride) is an antidepressant for oral administration with a chemical structure unrelated to selective serotonin reuptake inhibitors, tricyclics, tetracyclics, or monoamine oxidase inhibitors (MAOI).

Naproxen is a proprionic acid derivative related to the arylacetic acid group of nonsteroidal anti-inflammatory drugs.

REVEX (nalmefene hydrochloride injection), an opioid antagonist, is a 6-methylene analogue of naltrexone. The chemical structure is shown below:

Chemically, cromolyn sodium is the disodium salt of 1,3-bis (2-carboxychromon-5-yloxy)-2-hydroxypropane. The empirical formula is C23H14Na2O11; the molecular weight is 512.34.

Nimotop (nimodipine) belongs to the class of pharmacological agents known as calcium channel blockers. Nimodipine is isopropyl 2 - methoxyethyl 1, 4 - dihydro - 2, 6 - dimethyl - 4 - (m-nitrophenyl) - 3, 5 - pyridinedicarboxylate. It has a molecular weight of 418.5 and a molecular formula of C21H26N2O7. The structural formula is:

No information provided.

NORCO (hydrocodone bitartrate and acetaminophen) is supplied in tablet form for oral administration.

NORVIR (ritonavir) is an inhibitor of HIV protease with activity against the Human Immunodeficiency Virus (HIV).

Nystatin is a polyene antifungal antibiotic obtained from Streptomyces nursei. The molecular formula for Nystatin is C47H75NO17. The molecular weight of Nystatin is 926.1.