Allegra side effects
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Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop taking Allegra and call your doctor if you have fever, chills, body aches, cough, or other flu symptoms.
Less serious side effects may include:
- nausea, diarrhea, upset stomach;
- menstrual cramps;
- drowsiness, tired feeling;
- headache; or
- muscle or back pain.
This list is not complete and other side effects may occur. Tell your doctor about any unusual or bothersome side effect.