Diphenhydramine HCI Oral Solution - Cough suppressant. Alcohol free. Relieves coughs up to 4 hours. PediaCare NightTime Cough effectively relieves your child's cough symptoms so they can get the rest they need. It's alcohol free, and its sweet cherry flavor tastes great. Recommended by pediatricians. Trusted by moms. Each teaspoon contains: Sodium 15 mg.