Phenylephrine hydrochloride how does this product helpsudafed blocked nose capsules with phenylephrine hydrochloride effectively clear stuffy noses associated with colds and hay fever resulting in a clear headmedicinal product for the relief of stuffy noses associated with colds and hay fever active ingredients phenylephrine hydrochloride 12 mg please read enclosed leaflet carefully before use do not give to children under 12 years old store out of reach and sight of children