Pure grade vitamin D3, available in 3 different strengths (4000 IU, 2000 IU, 1000 IU) and with a vegan option (1000 IU). In the UK, the primary natural source of vitamin D is oily fish, with most vitamin D usually synthesised from sunlight exposure. However, factors like season (synthesis only occurs in summer), geographic latitude (the UK’s northern position), limited midday sunlight exposure (11am–3pm), cloud cover, pollution, skin pigmentation and sunscreen use all limit natural vitamin D production. As a result, even during summer, nearly half of the English population has deficient vitamin D levels, with 75% below the optimal threshold of 75 nmol/L. The natural vitamin D3 in this product matches the form produced in the body through sunlight exposure.
