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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Should I Be Concerned Of White Sores On Lips Caused By Consumption Of Cephalexin?

My 9 year old son has been taking the antibiotic cephalexin. He had a little cut on his knee that got infected and that s what the dr prescribed. He started getting little white sores on the inside of his lip. He has had them for three days or so before I relized it was the medicine. I stopped the medicine until we see his doctor. I m wonder if I should rush him to urgent care or wait until Monday.
posted on Wed, 12 Mar 2014
Twitter Wed, 12 Mar 2014 Answered on
Twitter Thu, 13 Mar 2014 Last reviewed on
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General & Family Physician 's  Response
Sores inside the lip is not something to panick - you may wait till monday. In my opinion cefalexin is not known to cause sore inside the lip- so appearance of sore may be a chance factor that you might be associating with the medicine. However, you may switch your antibiotic after consulting your doctor.
I also advise you to apply antiseptic cream over the cut present at knee.
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Should I Be Concerned Of White Sores On Lips Caused By Consumption Of Cephalexin?

Sores inside the lip is not something to panick - you may wait till monday. In my opinion cefalexin is not known to cause sore inside the lip- so appearance of sore may be a chance factor that you might be associating with the medicine. However, you may switch your antibiotic after consulting your doctor. I also advise you to apply antiseptic cream over the cut present at knee.