A member asked:

I tested positive for tonsilitius they gave me a shot in my butt, how long does it take to start working?

A doctor has provided 1 answer

1-2 days: You should start to feel better from the intramuscular penicillin shot they probably gave you (that's what the shot in the butt usually is) in 1-2 days assuming you have something that it treats. If your infection is actually viral or due to a bacteria other than group A strep, it will not respond to the antibiotics. In that case you should follow up with your doctor.

Answered 5/11/2014

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