Ultra Immune C

High-dose ascorbic acid supports immune cell function and acts as an antioxidant, helping neutralize exercise-induced oxidative stress. Evidence supports its role in reducing duration and severity of upper respiratory infections in athletes under heavy training loads.

Cholecalciferol (D3) is the most bioavailable form of vitamin D. At 25mcg (1000 IU), it supports immune modulation, muscle function, and bone health. Deficiency is common in endurance athletes, particularly those training indoors or at higher latitudes.

Riboflavin 5-phosphate is the active coenzyme form of Vitamin B2, offering superior bioavailability over standard riboflavin. It plays a key role in energy metabolism and antioxidant defense via glutathione reductase activity. Endurance training increases riboflavin demands.

Zinc gluconate provides a well-absorbed form of zinc, essential for immune cell proliferation, wound healing, and enzymatic antioxidant activity. Athletes are at elevated risk of zinc depletion through sweat losses. 15mg meets the recommended daily intake for adults.

Beetroot is a well-established nitrate source for endurance performance, but the 10mg of powder here is far below the amounts used in studies (typically 300–600mg of nitrate). At this level it adds antioxidant polyphenols rather than a meaningful nitric oxide-driven performance benefit.