About Methylcobalamin (vitamin B12)
Medically reviewed by Dr Khizer Hussain Junaidy, MD Pharmacology, Diabetologist & Bariatric Physician, on 23 Oct 2026.
What it is for
Vitamin B12. Used for B12 deficiency and nerve symptoms such as tingling and numbness in diabetes.
How to take it
Take it once a day after food, or as advised. Injections are given by a nurse.
Common side effects
Call your doctor if
- Tingling or numbness that keeps getting worse.
From our clinic: People on metformin for many years should get B12 checked.
About Vitamin D3 (cholecalciferol)
Medically reviewed by Dr Khizer Hussain Junaidy, MD Pharmacology, Diabetologist & Bariatric Physician, on 23 Oct 2026.
What it is for
Treats and prevents vitamin D deficiency, which is very common in India.
How to take it
Weekly sachets or capsules (60,000 IU) are taken once a week with a meal that has some fat, for the number of weeks the doctor advises. Daily doses are taken after food.
Common side effects
- Usually none at advised doses.
Call your doctor if
- Excess thirst, passing a lot of urine, vomiting or confusion (signs of too much vitamin D).
Take care
Do not take high-dose weekly vitamin D for months without a doctor's plan and a blood test.
From our clinic: Sunlight on the arms and face for 15 to 20 minutes between 11 am and 2 pm, a few times a week, also helps.
General information for patients, not a substitute for your doctor's advice. Your dose and plan may differ.