My dentist gave me keflex and it made me feel like it was stuck in my throat no rash . hives i've takenitbefor in the past i have gerd i'm i allergic?

Might be gerds: Gerds is a good probability but i would check for allergy.

Keflex: Are you allergic to penicillin? There is a % of people that may be allergic to both.Could be gerd related. I would not take any chances, call your doctor immediately and let him know what happened. He may send you to an allergist and/ or switch your medication. He may also do nothing, best to call him to be sure.