Can you give a 15 lb bichon frise adult benadryl?

Yes, you can give a 15 lb Bichon Frise Benadryl, but it's important to consult with a veterinarian first to confirm the appropriate dosage. Generally, the recommended dose is about 1 mg of diphenhydramine per pound of body weight, which would be approximately 15 mg for a 15 lb dog. Always ensure that the formulation is safe for dogs and does not contain additional ingredients that could be harmful. Monitor your dog for any adverse reactions after administering the medication.