BioCare Vitamin C Powder contains magnesium ascorbate which is a low-acid form of Vitamin C. This form of vitamin C is gentler on the stomach then the more acidic form of ascorbic acid. Both Vitamin C and magnesium are useful during times of stress and for the extra pressures of everyday life. Vitamin C is key to optimum nerve and immune system functioning as well as collagen formation. Magnesium provides additional nervous system support and supports muscle functioning. Together, magnesium and Vitamin C help to reduce tiredness. This powdered Vitamin C supplement is perfect for those who do not like taking capsule or tablet form supplements. It can be added to juice or water for easy, quick and effective consumption.