trimpex

How long does Trimethoprim stay in your body?

The elimination half-life of trimethoprim is about 8 to 10 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. This is the elimination half-life in adults with normal kidney function, so trimethoprim is largely cleared in roughly 2 days (about 5 half-lives). Trimethoprim is not a prodrug and has no active metabolite that outlasts it — only 10-20% is metabolized (mostly in the liver to inactive oxide and hydroxy derivatives), and the free (unchanged) drug is the therapeutically active form, with the rest excreted unchanged in urine. Because clearance is mainly renal, the half-life lengthens in people with severely impaired kidney function, which calls for dose adjustment or avoiding the drug. Half-life is a clearance measure, not a drug-test detection window.

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: TRIMETHOPRIM tablet — DailyMed (Clinical Pharmacology).

Frequently asked questions

What does Trimpex treat?

Trimpex (Trimethoprim) may be used to treat bronchitis, escherichia coli infections, klebsiella infections, pneumocystis pneumonia, proteus infections, staphylococcal infections, based on NIH RxClass drug-classification data (conditions a drug may treat — not a verbatim copy of the FDA-approved label). This is general reference, not medical advice.

How much does Trimpex 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 $35.33 for 30, 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 Trimpex?

pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Trimpex. 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 Trimpex?

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

Is Trimpex a brand-name or generic drug?

Trimpex is a brand-name product with the active ingredient Trimethoprim. Lower-cost generic equivalents containing Trimethoprim are available — ask your pharmacist.

Is Trimpex available over the counter?

No. Trimpex 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 Trimpex come in?

Trimpex is currently marketed as tablet, per the FDA's National Drug Code Directory.

What class of drug is Trimpex?

Trimpex is classified as dihydrofolate reductase inhibitor antibacterial, per the FDA's Established Pharmacologic Class.

Is Trimpex FDA-registered?

Trimpex is on record with the U.S. FDA under application number NDA017952. You can verify this on its official FDA label.