About diphenhydramine hcl + menthol
First-generation antihistamine and cooling agent
Used for
- Relieves allergy symptoms such as sneezing, runny nose, and itching
- May soothe cough or throat irritation
Usual adult dose
Adults generally use 25–50 mg diphenhydramine every 4–6 hours; follow the product label and maximum daily dose.
Usual dose in children
For ages 6–11, commonly 12.5–25 mg every 4–6 hours. Not recommended under 6 unless directed by a clinician; check the local label.
Common side effects
- Sleepiness and dizziness
- Dry mouth, blurred vision, or constipation
- Occasionally, agitation in children
Important warnings
- Can impair alertness; avoid driving and alcohol.
- Do not combine with other diphenhydramine or sedating medicines without advice.
- Use cautiously with glaucoma, urinary problems, or breathing conditions.
- Check the label: combination products may have different age limits and dosing.
Pregnancy
Safety is not fully established; use only when needed and after professional advice.
Breastfeeding
Diphenhydramine may cause infant drowsiness and can reduce milk supply; seek professional advice before use.
Interactions
- Alcohol, opioids, sleep medicines, and other sedatives increase drowsiness.
- Monoamine oxidase inhibitors may intensify or prolong effects.
- Other anticholinergic medicines can increase dry mouth, constipation, and urinary problems.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.