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Cephalexin Drug Interactions
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Metformin
If metformin and cephalexin are combined, your body may metabolize the drugs differently than intended. This can significantly increase the amount of metformin in your system. Your healthcare provider may choose to monitor your progress and adjust your dosage accordingly, depending on your particular situation.
Typhoid Vaccine
If you are taking cephalexin and receive a live, attenuated typhoid vaccine, the vaccine may lose some if its effectiveness. This, in turn, could leave you unprotected against typhoid.
It is possible that not all cephalexin drug interactions were listed in this article. Therefore, you should talk with your doctor or pharmacist about any specific interactions that may apply to you.
Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD