Diphenhydramine Hydrochloride Injection, 50 mg / mL, 25 x 1 mL Single-Dose VialDiphenhydramine hydrochloride in the injectable form is effective in adults and pediatric patients, other than premature infants and neonates, for the following conditions when diphenhydramine hydrochloride in the oral form is impractical. Antihistaminic, Motion Sickness, Antiparkinsonism For IM or IV use. Protect from light. Keep from freezing. HIGH POTENCYFor Intramuscular or Intravenous use. 50 mg per mL25 x 1 mL Single Dose Vials