As with any protein supplement, results may vary. However, you may be able to feel or measure an increase in muscle endurance after the first or second time using Fortagen (using the recommended dosage). Meanwhile, you may be able to measure an increase in muscle strength after the first or second week using Fortagen (using the recommended dosage). Week after week, you may experience an increase in muscle mass, strength and endurance, joined with a shortened recovery period after physical activity.