NIRAVAM (alprazolam orally disintegrating tablets) contains alprazolam which is a triazolo analog of the 1,4 benzodiazepine class of central nervous system-active compounds.

Chloral Hydrate Syrup, USP contains chloral hydrate, an effective sedative and hypnotic agent for oral administration.

NUBAIN (nalbuphine hydrochloride) is a synthetic opioid agonist-antagonist analgesic of the phenanthrene series. It is chemically related to both the widely used opioid antagonist, naloxone, and the potent opioid analgesic, oxymorphone. Chemically nalbuphine hydrochloride is 17-(cyclobutylmethyl)-4,5?-epoxymorphinan-3,6?,14-triol hydrochloride. Nalbuphine hydrochloride molecular weight is 393.91 and is soluble in H₂O (35.5 mg/mL @ 25??C) and ethanol (0.8%); insoluble in CHCl₃ and ether. Nalbuphine hydrochloride has pKa values of 8.71 and 9.96. The molecular formula is C₂₁H₂₇NO₄·HCl. The structural formula is:

Nystatin is a polyene antifungal antibiotic obtained from Streptomyces nursei.

The NORPLANT SYSTEM kit contains levonorgestrel implants, a set of six flexible closed capsules made of silicone rubber tubing (Silastic® , dimethylsiloxane/methylvinylsiloxane copolymer), each containing 36 mg of the progestin levonorgestrel contained in an insertion kit to facilitate implantation. The capsules are sealed with Silastic (polydimethylsiloxane) adhesive and sterilized. Each capsule is 2.4 mm in diameter and 34 mm in length. The capsules are inserted in a superficial plane beneath the skin of the upper arm.

The chemical name for the active ingredient in BYSTOLIC (nebivolol) tablets is (1RS,1'RS)-1,1'-[(2RS,2'SR)bis(6-fluoro-3,4-dihydro-2H-1-benzopyran-2-yl)]-2,2'-iminodiethanol hydrochloride. Nebivolol is a racemate composed of d-Nebivolol and l-Nebivolol with the stereochemical designations of [SRRR]-nebivolol and [RSSS]nebivolol, respectively. Nebivolol's molecular formula is (C₂₂H₂₅F₂NO₄•HCl) with the following structural formula:

NITROSTAT is a stabilized sublingual compressed nitroglycerin tablet that contains 0.3 mg, 0.4 mg , or 0.6 mg nitroglycerin; as well as lactose monohydrate, NF; glyceryl monostearate, NF; pregelatinized starch, NF; calcium stearate, NF powder; and silicon dioxide, colloidal, NF.

Neostigmine Methylsulfate Injection, USP is the dimethylcarbamate of (m-hydroxyphenyl) trimethylammonium methylsulfate.

Neurontin® (gabapentin) Capsules, Neurontin (gabapentin) Tablets, and Neurontin (gabapentin) Oral Solution are supplied as imprinted hard shell capsules containing 100 mg, 300 mg, and 400 mg of gabapentin, elliptical film-coated tablets containing 600 mg and 800 mg of gabapentin or an oral solution containing 250 mg/5 mL of gabapentin.

Nortriptyline hydrochloride (nortriptyline hydrochloride (nortriptyline hydrochloride (nortriptyline hydrochloride capsules) capsules) capsules) is 1-Propanamine, 3-(10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-ylidene)-N-methyl-, hydrochloride. The structural formula is represented below: