Zaleplon is a nonbenzodiazepine hypnotic from the pyrazolopyrimidine class. The chemical name of zaleplon is N-[3-(3-cyanopyrazolo[1,5-a]pyrimidin-7-yl)phenyl]-N-ethylacetamide. Its empirical formula is C HNO, and its molecular weight is 305.34. The structural formula is shown below. Zaleplon is a white to off-white… Continue Reading


ZYLOPRIM (allopurinol) has the following structural formula: ZYLOPRIM is known chemically as 1,5-dihydro-4-pyrazolo [3,4-]pyrimidin-4-one. It is a xanthine oxidase inhibitor which is administered orally. Each scored white tablet contains 100 mg allopurinol and the inactive ingredients lactose, magnesium stearate, potato… Continue Reading


Zonisamide is an antiseizure drug chemically classified as a sulfonamide and unrelated to other antiseizure agents. The active ingredient is zonisamide, 1,2-benzisoxazole-3-methanesulfonamide. The empirical formula is CHNOS with a molecular weight of 212.23. Zonisamide is a white powder, pKa =… Continue Reading


Zazole Vaginal Cream 0.8% (terconazole vaginal cream 0.8%) is a white to off-white, water washable cream for intravaginal administration containing 0.8% of the antifungal agent terconazole, -1-[-[[2-(2,4-Dichlorophenyl)-2-(1–1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-4-yl]methoxy]phenyl]-4-isopropylpiperazine, compounded in a cream base consisting of butylated hydroxyanisole, cetyl alcohol, isopropyl myristate,… Continue Reading


Zingo™ (lidocaine hydrochloride monohydrate) powder intradermal injection system contains 0.5 mg of sterile lidocaine hydrochloride monohydrate. The chemical name is 2-diethylamino-2′,6′-acetoxylidide, monohydrochloride, monohydrate. The molecular formula is CHNO · HCl · HO with a molecular weight of 288.8 Da. Lidocaine hydrochloride monohydrate, a local anesthetic… Continue Reading


Zolpidem tartrate is a non-benzodiazepine hypnotic of the imidazopyridine class and is available in 5 mg and 10 mg strength tablets for oral administration. Chemically, zolpidem is N,N,6-trimethyl-2-p-tolylimidazo[1,2-a] pyridine-3-acetamide L-(+)-tartrate (2:1). It has the following structure: Zolpidem tartrate is a… Continue Reading

Zegerid with Magnesium Hydroxide

ZEGERID® with Magnesium Hydroxide (omeprazole/sodium bicarbonate/magnesium hydroxide) is a combination of omeprazole, a proton-pump inhibitor, and sodium bicarbonate plus magnesium hydroxide, both of which are antacids. Omeprazole is a substituted benzimidazole, 5-methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-1-benzimidazole, a racemic mixture of two enantiomers that inhibits… Continue Reading