Major Pharmaceuticals Diphenhydramine Oral Solution (SKU: 701181) is an institutional-grade liquid antihistamine formulation designed specifically for hospitals, long-term care facilities, emergency departments, and outpatient clinical environments. Containing Diphenhydramine Hydrochloride (12.5 mg per 5 mL), this alcohol-free oral liquid acts as an H1-receptor antagonist to provide rapid relief from symptoms associated with allergic rhinitis, upper respiratory allergies, urticaria, and acute allergic reactions. Packaged in a high-volume 473 mL (16 fl oz) bulk bottle and supplied in cases of 24, this USP-compliant solution is ideal for inpatient dose compounding and unit-dose administration. Standardized National Drug Codes (NDC) enable seamless barcode medication administration (BCMA) and institutional inventory control.