NOW L-Proline, 500mg, 120 VCaps Ear and Hearing Health Progressive Men 50+ (this product):

Progressive Men 50+ (this product): Tailored for men over 50 with prostate

The Active Men's formula is aimed at active adult men more broadly

The colour usually returns to normal within a day or two

Participates in glycogen synthesis

Made in Canada with non-GMO whey from grass-fed cows

NOW L-Proline, 500mg, 120 VCaps Ear and Hearing Health Progressive Men 50+ (this product):NOW L Proline 500mg Details Important for Collagen Production Provides Structural Support Vegetarian Formula L Proline is an amino acid that is essential for the synthesis of collagen, the most abundant protein in mammals. Collagen is the main structural protein that constitutes all human connective tissues, including skin, tendons, ligaments, joints, bone, and vasculature (veins and arteries). L Proline therefore provides building blocks that help to