duac

How long does Benzoyl Peroxide and Clindamycin Phosphate stay in your body?

The elimination half-life of benzoyl peroxide and clindamycin phosphate is about 2.4 hours — the time it takes the body to clear about half of it. As a rule of thumb, a medicine is mostly gone after roughly 4 to 5 half-lives, though this varies from person to person with age and kidney or liver function. The label gives an average biological (elimination) half-life of 2.4 hours for oral clindamycin hydrochloride, the active form. It runs slightly longer in older adults (about 4.0 hours, range 3.4–5.1, vs 3.2 hours, range 2.1–4.2, in younger adults) and is increased slightly in people with markedly reduced kidney or liver function. Clindamycin palmitate (oral pediatric solution) and clindamycin phosphate (injection) are inactive prodrugs that are hydrolyzed in the body to this same active clindamycin. Half-life reflects how fast the drug leaves the blood, not how long a drug test can detect it.

This is general information, not medical advice. It doesn’t tell you when a drug test would read negative (tests detect substances for different, often longer, windows) or when it’s safe to take another dose — ask your pharmacist or prescriber. Source: CLEOCIN HYDROCHLORIDE (clindamycin hydrochloride) capsule — FDA label, DailyMed.

Frequently asked questions

How much does Duac cost?

Nobody can tell you what you will pay — your price is set by your insurer's formulary, your deductible and the pharmacy's markup, and none of those are published. What IS published is what the pharmacy paid to acquire it: about $0.05 per gm, per the CMS NADAC survey. Treat that as the floor, not the quote — ask the pharmacist for the cash price as well as your copay, because for cheap generics the cash price often wins.

Is there a coupon or discount for Duac?

pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Duac. To pay less, ask your prescriber or pharmacist whether a generic equivalent exists, check the manufacturer's copay/savings card and patient-assistance program, and compare a pharmacy discount card against your insurance copay. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.

Who makes Duac?

Duac is marketed by Stiefel. You can see Stiefel's full profile, rating, and other products on pharmaranks.

Is Duac a brand-name or generic drug?

Duac is a brand-name product with the active ingredient Benzoyl Peroxide and Clindamycin Phosphate. Lower-cost generic equivalents containing Benzoyl Peroxide and Clindamycin Phosphate are available — ask your pharmacist.

Is Duac available over the counter?

No. Duac is a prescription (Rx) medication in the US — you need a prescription from a licensed clinician (in person or via telehealth); it isn't sold over the counter. For some conditions there are OTC alternatives — ask your pharmacist.

What forms does Duac come in?

Duac is currently marketed as topical, per the FDA's National Drug Code Directory.

Is Duac FDA-registered?

Duac is on record with the U.S. FDA under application number NDA050741. You can verify this on its official FDA label.