A protein hydrolysate composition is provided. The protein hydrolysate composition comprises isolated peptides useful for ameliorating a condition of a subject. Compositions comprising the protein hydrolysate composition are also provided. The compositions may be adapted for oral or topical administration to the subject, and may compose a foodstuff or beverage (e.g. a medical food), a topical composition (e.g. a lotion, cream, etc.), a kit, and the like. A methods of ameliorating the condition of the subject is further provided. The method include administering the protein hydrolysate composition to the subject. The method may be useful in reducing blood pressure, inflammation, reduced immunity, and/or oxidative stress in the subject.