Drug interaction: 30 year old gentleman with question about taking amoxicillin while taking doxycycline. Please contact your prescribing physician. There is a drug interaction between doxycycline and amoxicillin in which the effectiveness of amoxicillin may be reduced by pharmacodynamic antagonism and it is serious enough for an alternative to be used. Always use the pharmacist consultation at the drug store.
Answered 12/22/2018
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