Poly C is USANA’s proprietary vitamin C blend. It’s a unique combination of calcium, potassium, magnesium, and zinc mineral ascorbates (mineral salts). This mixture has been shown to increase and maintain higher levels of vitamin C in the blood than equal amounts of ascorbic acid alone.

Vitamin C is an essential nutrient that must be provided by the diet because your body can’t make it naturally. As a source of vitamin C, Poly C offers a number of important benefits:

• Antioxidant activity neutralizes damage caused by free radicals to maintain cellular health*
• Helps your body use iron*
• Supports collagen synthesis (a major structural protein in the body) to help maintain healthy skin, gums, cartilage, blood vessels, muscle, and bones*
• Supports immune function*
• Supports eye health*

The body absorbs vitamin C more efficiently in moderate dosages (<1,000 mg). And, levels of vitamin C in your blood begin to decline after about five hours (as you can see in the chart above). So, spread your Poly C across two or more supplement doses during the day to optimize absorption and maintain protective levels.*

https://askthescientists.com/qa/poly-c/?id=1424693...