Doctor?s Best Fully Active Folate 400 with Quatrefolic contains Quatrefolic the glucosamine salt of (6S)-5-methyltetrahydrofolate the most bioavailable form of folate that provides greater stability and water solubility.* Our body cannot synthesize folate and due to its water-soluble nature the body stores folate to a limited extent. Folic acid and food folate needs to be converted to its metabolically active form to be utilized by the body. Quatrefolic is the metabolically active folate making it more efficient than folic acid for maximized benefits!* Folate is an essential vitamin to support DNA proper cell division cardiovascular mental and emotional well-being.* Vitamin C is included for added stability.* At Doctor?s Best we lead with science. Our products are backed by research and crafted using pure ingredients carefully sourced from around the globe. Since 1990 we have dedicated ourselves to providing highly effective nutritional supplements that enable you to live a healthier lifestyl