A composition match, not medical advice.
D Gain Sachet 12 Sachet contains Vitamin D3 (Cholecalciferol) 60000IU, as a granules. It is made by Medsol India Overseas Pvt. Ltd.
No, it is sold over the counter. Ask a doctor or pharmacist if you are unsure whether it suits you.
Yes. Cholecalciferol Granules 60000 IU per gm is a Jan Aushadhi medicine with the same salt, the same strength and the same form. On JanAushadhiOnline it costs ₹10.21 for 1 sachet (₹10.2 / sachet), against ₹34.0 / sachet for D Gain Sachet 12 Sachet at its printed MRP — 69% less per sachet. Ask your doctor before changing a brand.