Hydro-Q

Generic name:hydroquinone
Dosage form: gel
Drug class:Topical depigmenting agents

Medically reviewed by Drugs.com. Last updated on Jul 1, 2021.

Disclaimer: This drug has not been found by FDA to be safe and effective, and this labeling has not been approved by FDA. Read further information about unapproved drugs.

RX Only

FOR EXTERNAL USE ONLY

Hydro-Q® contains hydroquinone USP 4%. Hydroquinone is 1, 4-Benzenediol {CAS 123-31-91}. Hydroquinone is structurally related to monobenzone. Hydroquinone occurs as fine white needles. The drug is freely soluble in water and in alcohol and has a pKa of 9.96. Chemically, hydroquinone is designated as p-dihydroxybenzene; the empirical formula is C6H6O2; The molecular weight is 110.1. The structural formula is:

ACTIVE INGREDIENT

Hydroquinone USP 4%

OTHER INGREDIENTS: Purified water, Carbomer 940, Sodium Metabisulfite, Sodium Hydroxide, Methylparaben, Edetate Disodium.

Hydro-Q - Clinical Pharmacology

Topical application of hydroquinone ...