2 doctors weighed in:

How long does it take for a penicillin injection to clear up acute pharyngitis + ear infection . Does the injection guarantee to clear up my symptoms?

2 doctors weighed in
Dr. Natalie Hodge
Pediatrics
1 doctor agrees

In brief: 48 to 72 hours

By the second day you should be a bit better, and much better by the third.
The shot will only be helpful if you have a strep throat as an etiology. If your sore throat is viral this shot will not help.

In brief: 48 to 72 hours

By the second day you should be a bit better, and much better by the third.
The shot will only be helpful if you have a strep throat as an etiology. If your sore throat is viral this shot will not help.
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