Our Vitamin D3 4000iu is the optimum level recommended by nutritionists to quickly correct deficiencynbspVitamin D supplementation can play an important role in correcting Vitamin D deficiency to ensure the maintenance of adequate levels in the bodyVitamin D plays a number of crucial roles in the body including providing support for immune health muscle health and strong bones and teethnbspVitamin D can be obtained through food sources such as eggs fortified cereals and oily fish but is predominantly synthesised in the skin through exposure to sunlight - hence why it is often referred to as the sunshine vitaminMost healthy adults should theoretically be able to get enough Vitamin D from being outside in the sunshine however Vitamin D deficiency is very common throughout the UK This is as a result of a low level of exposure to sunlight making Vitamin D synthesis almost impossible during the winterHigh strength natural form tabletOur 4000iu high strength Vitamin D supplement provides 100microg 2000 Nutrient Reference Value in an 8mm round odourless tablet with no coating We use a high quality natural form of Vitamin D Cholecalciferol Vitamin D3 in this supplement - the form of Vitamin D most readily absorbed by the body Our manufacturing process gives us a highly concentrated form of Vitamin D3 which offers 99 purity and unbeatable qualityRecommended as a food supplement by the FSAThe Food Standards Agency recommends that if you are pregnant or breastfeeding you should take a 400iu 10micrognbspsupplement of Vitamin D each day Peoplenbspwho may be at risk from Vitamin D deficiency include people who nbsp bull are of Asian origin nbsp bull rarely get outdoors nbsp bull eat no meat or oily fishVitamin D and rickets in childrenVitamin D is crucial for the maintenance of health and strong bones a deficiency in Vitamin D can cause rickets in young children which is a weakening and softening of bones which can lead to bone deformities After World WarnbspII instances of rickets in the UK were dramatically fewer due to the British government introducing cod liver oil as a supplement - this is a great food source of Vitamin D However between 2003 and 2013 the NHS reported a 430 increase in cases of rickets an alarming statistic highlighting a growing health problem nbsp