Can you take Claritin and Tylenol PM together?
Yes, it's generally safe for most adults to take Claritin (loratadine, an antihistamine for allergies) and Tylenol PM (acetaminophen for pain/fever plus diphenhydramine for sleep) together. No major drug interactions occur between loratadine and either acetaminophen or diphenhydramine, per standard interaction checkers like Drugs.com and WebMD.[1][2]
What are the ingredients and how do they interact?
- Claritin: 10 mg loratadine (non-drowsy antihistamine).
- Tylenol PM: 500 mg acetaminophen + 25 mg diphenhydramine (sedating antihistamine).
Loratadine doesn't amplify diphenhydramine's sedation or acetaminophen's liver effects. Minor additive drowsiness is possible from the two antihistamines, but loratadine is minimally sedating.[1][3]
Drowsiness risks and when to avoid
Diphenhydramine in Tylenol PM causes significant sleepiness—expect amplified effects if combined, especially at night. Skip if driving, operating machinery, or with alcohol. Avoid entirely if you have glaucoma, enlarged prostate, breathing issues (e.g., asthma, COPD), or take other sedatives.[2][4]
Dosage guidelines
- Standard adult doses: Claritin 10 mg once daily; Tylenol PM 2 caplets (1,000 mg acetaminophen + 50 mg diphenhydramine) at bedtime.
Stay under 3,000-4,000 mg acetaminophen daily from all sources to prevent liver damage. Space doses if needed; no timing conflicts.[1][3]
Who should talk to a doctor first?
Consult a pharmacist or doctor if pregnant, breastfeeding, elderly, have liver/kidney disease, or take MAOIs, other antihistamines, or blood thinners. Children under 12 need pediatric advice.[2][4]
Alternatives if concerned about interactions