Is penicillin good to take if you have a uti ?
Unfortunately, penicillin (nor ampicillin) will help treat a UTI.
There are different kinds of bacteria out there…UTIs are usually caused by a “gram negative” bacteria.
Penicillin/amoxicillin do not treat “gram negative” bacteria well.
And most UTIs are completely resistant to ampicillin (so ampicillin would not help either).
Cheap medications that would treat most UTIs are:
1. Bactrim generic
2. Cipro generic
3. Macrobid generic
Hope this helps!
Source(s): I am a pharmacist.
my blog is http://www.getpharmacyadvice.com/