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New Roots: Vitamin D3 2500IU Extra Strength Softgels. Each tiny softgel of extra-strength Vitamin D3 (cholecalciferol) contains 2,500 IU of this critical vitamin, essential for good health. This is the current maximum dosage recommended by Health Canada without a prescription to help prevent vitamin D3 deficiency. Vitamin D3 is the biologically active form of vitamin D. When combined with sufficient calcium, a healthy diet, and an active lifestyle, it can help reduce the incidence of osteoporosis. The World Health Organization (WHO) recognizes vitamin D deficiency as a factor for many global health concerns. Statistics Canada reports that approximately ⅓ of Canadians are vitamin D–deficient, with 40% being deficient in winter and 25% during the summer months. New Roots Herbal’s Vitamin D3 Extra Strength delivers a proactive dosage of 2,500 IU per softgel to help prevent deficiency year-round.