Benadryl Allergy/ Cold Side Effects, Before Using & Usefull Information

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Check with your doctor if any of these most COMMON side effects persist or become bothersome:

  • constipation;
  • diarrhea;
  • dizziness;
  • drowsiness;
  • excitability;
  • headache;
  • loss of appetite;
  • nausea;
  • nervousness or anxiety;
  • trouble sleeping;
  • upset stomach;
  • vomiting;
  • weakness.
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