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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Is Ampicillin An Alternative For Penicillin?

Yes you may. My husband is allergic to penicillin and his dr. Gave him ampicillin 500mg. Is this what some say a cousin to penicillin. He took one about an hour and a half ago. He seems fine now. Should he be ok by now or should I stay awake and watch him for a bit longer?
Mon, 25 Jul 2016
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General & Family Physician 's  Response
Hello.
Amoxicillin is in the "cillin" family like ampicillin and Pen V K but it may not cause him any problems if there is no reaction two hours after the first dose
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Is Ampicillin An Alternative For Penicillin?

Hello. Amoxicillin is in the cillin family like ampicillin and Pen V K but it may not cause him any problems if there is no reaction two hours after the first dose