Yes, you can take either cetirizine or Allegra (fexofenadine) to help soothe the itching and reduce the redness. Both are antihistamines that can provide good relief. Please choose just one, as taking them together is not recommended. Make sure to follow the package instructions. If your rash spreads, does not improve after a few days, or if you start feeling unwell, please have a doctor examine it to ensure you get the right care.
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Can I take Cetirizine or Allegra to treat an itchy red rash on my body?