Probably one of the most commonly used supplements, vitamin C speeds tissue growth and repair, supports hormone production, increases immune system functioning, and protects the body from toxins. It also regulates cholesterol, blood pressure and blood clotting. And vitamin C increases iron absorption and is an important part of our bone make-up.
Although vitamin C deficiency is rare nowadays, thanks to readily available citrus fruits, it can still occur. Signs that you may need to up your intake of this vitamin include bleeding gums, eczema, poor wound healing, weakness; increased colds and flus, as well as easy bruising. Also, you may need to supplement if you use oral contraceptives, antidepressants, analgesics, anticoagulants, steroids or alcohol.