NUVESSA contains 1.3% metronidazole, USP in a single-dose prefilled disposable applicator. It is intended for intravaginal use. Metronidazole is a nitroimidazole antimicrobial. Chemically, metronidazole is a 2-methyl-5-nitroimidazole-1-ethanol. Its structural formula is: The molecular formula is CHNO with a molecular weight of… Continue Reading

Neostigmine Methylsulfate

Neostigmine Methylsulfate Injection, a cholinesterase inhibitor, has an empirical formula of CHNOS, a molecular weight of 334.39 g/mol and the following structural formula: Neostigmine Methylsulfate Injection is formulated with neostigmine methylsulfate, a white crystalline powder, chemically designated as (m-hydroxyphenyl) trimethylammonium… Continue Reading

Norepinephrine bitartrate

Norepinephrine (sometimes referred to as is a sympathomimetic amine which differs from epinephrine by the absence of a methyl group on the nitrogen atom. Norepinephrine bitartrate is (-)-α-(aminomethyl)-3,4-dihydroxybenzyl alcohol tartrate (1:1) (salt) monohydrate and has the following structural formula: Norepinephrine… Continue Reading

Norethindrone Acetate

Norethindrone Acetate Tablets USP (17-hydroxy-19-nor-17α-pregn-4-en-20-yn-3-one acetate), a synthetic, orally active progestin, is the acetic acid ester of norethindrone. It is a white, or creamy white, crystalline powder. The structural formula is as follows: Each Norethindrone Acetate Tablet USP, for oral… Continue Reading


NARDIL (phenelzine sulfate) is a potent inhibitor of monoamine oxidase (MAO). Phenelzine sulfate is a hydrazine derivative. It has a molecular weight of 234.27 and is chemically described as C H N • HSO. Its chemical structure is shown below:… Continue Reading


Methazolamide, a sulfonamide derivative, is a white crystalline powder, weakly acidic, slightly soluble in water, alcohol and acetone. The chemical name for methazolamide is: N-[5-(aminosulfonyl)-3-methyl-1,3,4-thiadiazol-2(3H)-ylidene]-acetamide and it has the following structural formula: Each tablet, for oral administration, contains 25 mg… Continue Reading


NP Thyroid (thyroid tablets, USP) for oral use is a natural preparation derived from porcine thyroid glands. They contain both tetraiodothyronine sodium (T4 levothyroxine) and triiodothyronine sodium (T3 liothyronine) providing 38 mcg levothyroxine (T4) and 9 mcg liothyronine (T3) per… Continue Reading

Neo Polycin HC

Neomycin and polymyxin B sulfates, bacitracin zinc and hydrocortisone acetate ophthalmic ointment is a sterile antimicrobial and anti-inflammatory ointment for ophthalmic use. Each gram contains: neomycin sulfate equivalent to 3.5 mg neomycin base, polymyxin B sulfate equivalent to 10,000 polymyxin… Continue Reading

Neo Polycin

Neomycin and polymyxin B sulfates and bacitracin zinc ophthalmic ointment is a sterile antimicrobial ointment for ophthalmic use. Each gram contains: neomycin sulfate equivalent to 3.5 mg neomycin base, polymyxin B sulfate equivalent to 10,000 polymyxin B units, bacitracin zinc… Continue Reading


Nystatin is a polyene antifungal antibiotic obtained from The molecular formula for Nystatin is CHNO. The molecular weight of Nystatin is 926.1. Structural formula: Nystatin Topical Powder USP is for dermatologic use. Nystatin Topical Powder USP contains 100,000 USP nystatin… Continue Reading