Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
Less common or rare
Painful irritation of skin, including burning, blistering, crusting, itching, severe redness, or swelling
skin rash
Incidence not known
Difficult breathing
fainting
hives
itching
swelling of the eyes, face, lips, or tongue
tightness in the throat
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
Burning, itching, scaling, redness, or swelling of skin (severe)
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
Less common
Dryness or peeling of the skin (may occur after a few days)
feeling of warmth, mild stinging, and redness of the skin
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
 Benzagel side effects (more detail)
