Do I need antibiotics for strep throat?
Last updated September 3, 2026.
Yes - strep throat is bacterial and should be treated with antibiotics, usually penicillin or amoxicillin. Antibiotics shorten the illness, make you far less contagious within 12 to 24 hours, and prevent rheumatic fever, a complication that can damage heart valves. That is what separates strep from the many viral sore throats that need no antibiotics at all. Because the two look alike, guidelines call for a rapid strep test or throat culture rather than a symptom guess. Strep clues include fever, no cough, tender swollen neck glands, and white patches on the tonsils. Pymander is a free AI doctor, 24/7 by text, that can help you read your symptoms and decide whether a test is worth the trip.
What to do
- Get tested before treating: a rapid strep test takes minutes at urgent care or a pharmacy clinic.
- Finish the full course: feeling better by day three does not mean the bacteria are gone.
- Stay home until 12 to 24 hours on antibiotics: before that, you are still contagious.
- Replace your toothbrush after starting treatment: a small step that lowers the chance of reinfection.
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