Sulfamethoxazole-Trimethoprim
Medically Reviewed by Dr. Harshi Dhingra, M.D.
Last Reviewed: Mar 26, 2025
Common Questions
Common Questions about Sulfamethoxazole Trimethoprim
How quickly does sulfamethoxazole trimethoprim start working?Sulfamethoxazole and trimethoprim start working within a few days. You should notice an improvement in your symptoms within 2-3 days of starting antimicrobial treatment. However, be sure to finish all the antibiotics prescribed by your doctor to prevent bacterial resistance. |
Is sulfamethoxazole trimethoprim a penicillin?No, sulfamethoxazole and trimethoprim are not penicillins. They belong to a different class of antibiotics called sulfonamide antibiotics. People with a penicillin allergy can safely take trimethoprim-sulfamethoxazole. |
Can I drink alcohol while on sulfamethoxazole and trimethoprim?It is best to avoid drinking alcohol while on sulfamethoxazole and trimethoprim and for 2 days after your last dose. Alcohol can make side effects like nausea and diarrhea worse. In addition, drinking alcohol while on certain antibiotics can cause a disulfiram-like reaction with severe nausea, vomiting, flushing, and headache. |
What is the price of sulfamethoxazole-trimethoprim without insurance?Without insurance, sulfamethoxazole-trimethoprim can be as high as $27.18, but with a free BuzzRx prescription discount coupon, you could pay as low as $11.08 for the most common version of this medication. Use the BuzzRx drug price look-up tool to find the lowest discounted price, and be sure to enter the correct dosage, form, and quantity for the most accurate pricing. While generics tend to have the best savings, you can also use your BuzzRx card and coupons to purchase brand-name versions. It never hurts to ask your pharmacist to try BuzzRx when filling or refilling any of your prescription drugs—whether you have insurance or not. |
What is the price of sulfamethoxazole-trimethoprim with insurance?Ask your pharmacist or insurance provider for your copay price on sulfamethoxazole trimethoprim—Copay amounts vary depending on the type of insurance plan you have and if there is a deductible to reach before prescription drug coverage begins. You could save up to 80% on your prescription medication with a free BuzzRx discount coupon for sulfamethoxazole-trimethoprim. When using the BuzzRx lookup tool to find the price of your medicine, be sure to enter the correct dosage, form, and quantity to receive the most accurate discounted pricing. It never hurts to ask your pharmacist to try BuzzRx when filling or refilling any of your prescriptions—whether you have insurance or not. |
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