3 doctors weighed in:

Is Doxycycline as effective as penicillin with syphilis I am allergic to pen.also how long does it take for the doxy to work am infectious while on it?

3 doctors weighed in
Dr. Hunter Handsfield
Internal Medicine - Infectious Disease
2 doctors agree

In brief: Just as effective

Yes, doxycycline is just as effective as penicillin, but you must take all of the pills more or less on time.
You're probably non-infectious after a few days, but best to avoid sex until after completing the entire 2 weeks of treatment.

In brief: Just as effective

Yes, doxycycline is just as effective as penicillin, but you must take all of the pills more or less on time.
You're probably non-infectious after a few days, but best to avoid sex until after completing the entire 2 weeks of treatment.
Dr. Hunter Handsfield
Dr. Hunter Handsfield
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