About Vitamin D DeficiencyVitamin D deficiency is very common in Pakistan despite plenty of sunshine, because of indoor lifestyles, covered clothing, diet and darker skin. Vitamin D is essential for strong bones and muscles.It can cause tiredness, bone and back pain, muscle weakness and cramps. In children severe deficiency causes rickets, and in adults it causes soft bones (osteomalacia).Medicines used for Vitamin D DeficiencyDeficiency is confirmed with a blood test and treated with vitamin D3 (cholecalciferol) as weekly or monthly capsules, sachets, drops or injections, often with calcium. Safe sun exposure and foods such as eggs and fortified milk help maintain levels.When to see a doctorTake high-strength vitamin D only as advised by a doctor, and recheck levels as recommended, since too much can raise calcium levels.This page is for general information only. Many of these medicines need a prescription; please use them only on the advice of a doctor or pharmacist, who can choose the right medicine and dose for you.