Can You Take Claritin and Benadryl Together?
Yes, you can take Claritin (loratadine) and Benadryl (diphenhydramine) together. Both are antihistamines used for allergies, but they work differently—Claritin is non-drowsy and long-acting (24 hours), while Benadryl causes sedation and lasts 4-6 hours. No major drug interactions occur between them, as confirmed by interaction checkers like Drugs.com and WebMD.[1][2]
What Are the Risks or Side Effects?
Combining them increases drowsiness, dry mouth, dizziness, and blurred vision risks, especially since Benadryl alone sedates. Avoid driving or operating machinery. Older adults face higher confusion or fall risks. Start with low doses if trying both.[1][3]
When Might Doctors Recommend This?
Doctors sometimes suggest it for severe allergy flares or hives when one drug isn't enough—Claritin for daytime control, Benadryl at night for sleep aid. Always check with a pharmacist or doctor first, especially if you have glaucoma, prostate issues, or take other meds like sedatives.[2][4]
How Do They Compare to Other Antihistamines?
| Drug | Drowsiness | Duration | Common Use |
|------|------------|----------|------------|
| Claritin (loratadine) | Low | 24 hours | Daily allergies |
| Benadryl (diphenhydramine) | High | 4-6 hours | Acute symptoms, sleep |
| Zyrtec (cetirizine) | Moderate | 24 hours | Similar to Claritin but stronger |
| Allegra (fexofenadine) | Low | 24 hours | Non-drowsy alternative |
Switch to one non-sedating option like Claritin or Allegra for daily use to avoid buildup.[3]
What If You're on Other Medications?
Safe with most, but interactions rise with alcohol, sleep aids, antidepressants, or opioids—amplifying sedation. Use tools like the FDA's interaction checker or consult a professional.[4]
Sources
[1]: Drugs.com - Claritin and Benadryl Interaction
[2]: WebMD - Antihistamine Combinations
[3]: Mayo Clinic - Allergy Drug Guide
[4]: FDA Drug Interactions