These are known as contraindications. Cephalexin has one contraindication. If you’ve had an allergic reaction: If you’ve had an allergic reaction to cephalexin, any of its ingredients ...

If you’ve had a serious allergic reaction to cephalexin, your doctor may recommend taking a different medication instead. If you have an allergy to penicillin, there’s a chance you could also ...

Cephalexin is an antibiotic that treats various bacterial infections such as pneumonia, other respiratory tract infections, ...

These warnings are known as contraindications. The contraindications of cephalexin include: Having had an allergic reaction to cephalexin or any of its ingredients If you have had an allergic ...