1 doctor weighed in:

Any dangers of overdosing on allegra (fexofenadine)?

1 doctor weighed in
Dr. Paul Carter
Internal Medicine - Allergy & Immunology

In brief: Possibly

Allegra (fexofenadine) has been studied at very high doses with no clinically significant adverse events.
However, if a high enough dose is taken there may be adverse effects. I would be most concerned about potential cardiac arrhythmias at very very high doses.

In brief: Possibly

Allegra (fexofenadine) has been studied at very high doses with no clinically significant adverse events.
However, if a high enough dose is taken there may be adverse effects. I would be most concerned about potential cardiac arrhythmias at very very high doses.
Dr. Paul Carter
Dr. Paul Carter
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