[ljoyce]

[?] if i am allergic to penicillin can I take doxycycline as an antibiotic

[robo]

Doxycycline is a tetracycline antibiotic and not at all related to the penicillins. Always check with your doctor before taking any antibiotics.

[wanderer]

dear member
if you are allegic to penicillin then a tetracycline may not always be what you need.
you must specify for what purpose you need to take an antibiotic.
Doxycycline has some specific indications and is not to be used without medical supervision.
and remember!
if you are pregnant then doxycycline can be bad for the teeth of your baby!
regards
wanderer.