Trimethoprim/Sulfamethoxazole Dosage Guide — Strengths, Titration & Max Dose
Complete dosing reference for Trimethoprim/Sulfamethoxazole (Trimethoprim / Sulfamethoxazole): available forms and strengths, typical adult dose, titration schedule, max dose, and dosing in special populations.
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Chain retail
$20/mo
GoodRx typical
~$12/mo
Via Script Unlock
$9/mo
Save up to 55% — ~$132/year for chronic use.
Trimethoprim/Sulfamethoxazole Dosing
Trimethoprim/Sulfamethoxazole dosing depends on your indication, kidney and liver function, age, and other medications you are taking. Your prescriber selects the starting dose and titrates based on clinical response.
Ask your prescriber for the Trimethoprim/Sulfamethoxazole package insert or the FDA-approved prescribing information for full dosing detail.
Trimethoprim/Sulfamethoxazole pricing varies dramatically by pharmacy
The same Trimethoprim/Sulfamethoxazole prescription can cost $9 at one pharmacy and $20 at another in the same zip code. Chain pharmacies typically charge the most. Script Unlock lets verified independent and mail-order pharmacies compete for your prescription — the winning bid is usually 55% below chain retail.
- Free — no membership, no account, no credit card upfront
- Bids in 1–4 hours from verified US pharmacies
- Locked-in price — no PBM renegotiation at checkout
- Delivery or local pickup
Related Trimethoprim/Sulfamethoxazole pages
Medical disclaimer: Dosage information on this page is for reference only and is not a substitute for medical advice. Your prescribing doctor determines the appropriate Trimethoprim/Sulfamethoxazole dose for your condition, kidney and liver function, other medications, and clinical response.