The decision depends on individual clinical needs, laboratory investigations, and a doctor’s assessment. Supplements and medicines are selected based on factors such as nutrient levels, age, medical conditions, and specific deficiency states. In cases like maternal health or care for a 2‑month‑old baby, special care and medical supervision are essential. Do not take or give any supplement unless advised by a doctor after proper evaluation.

Indeed, testing for calcium and vitamin D3 is a good idea because deficiencies can lead to joint and bone pain.?Additionally, see an orthopedist because arthritis or a ligament issue could be the source of knee pain that gets worse when you bend.