Amoxicillin is well-known for causing rashes that are either allergic or nonallergic reactions. These rashes can be mild to ...

Medically reviewed by Alex Yampolsky, PharmD Amoxicillin and penicillin (also known as penicillin V potassium or penicillin G ...

Amoxicillin (as trihydrate ... Monitor use with oral anticoagulants; may need dose adjustment. Increased risk of rashes with allopurinol. May antagonize oral contraceptives.