Benadryl (diphenhydramine ... changes in vision or have trouble urinating. The recommended dose of doxylamine succinate for adults and children over 12 is 25 mg taken 30 minutes before bedtime.

PO- Adult- The recommended dose is 25 mg to 50 mg (1 to 2 capsules). Child- The recommended dose is 12.5 mg to 25 mg (1 capsule). Topical: Apply a thin layer over the affected area as directed by ...