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 Pregabalin
Medically reviewed by Dr Khizer Hussain Junaidy, MD Pharmacology, Diabetologist & Bariatric Physician, on 23 Oct 2026.
What it is for
Reduces nerve pain, including burning feet in diabetes, and is used in some anxiety and seizure conditions.
How to take it
Take it as advised, often at bedtime at first. Do not stop it suddenly.
Common side effects
- Sleepiness, dizziness.
- Weight gain, swelling of feet.
Call your doctor if
- Low mood or thoughts of self-harm.
- Swelling of the face or breathing difficulty.
Take care
Avoid alcohol. Do not drive if it makes you sleepy. Tell the doctor if you have kidney disease, as the dose may need to be lower. Taking it with strong painkillers (opioids) or sleeping pills can cause heavy drowsiness and slow breathing. It is a prescription-only medicine that can be misused, so we sell it only at our counter against the original prescription.
From our clinic: The dose is lowered slowly when stopping.
About Nortriptyline
Medically reviewed by Dr Khizer Hussain Junaidy, MD Pharmacology, Diabetologist & Bariatric Physician, on 23 Oct 2026.
What it is for
At low doses, reduces nerve pain and helps sleep in chronic pain. At higher doses, treats depression.
How to take it
Take it at bedtime.
Common side effects
- Dry mouth, constipation, sleepiness.
- Dizziness on standing.
Call your doctor if
- Fast or uneven heartbeat.
- Difficulty passing urine.
- Thoughts of self-harm.
Take care
Tell the doctor about heart disease, glaucoma or prostate problems. Do not stop it suddenly. Keep it away from children; even a few extra tablets can be dangerous to the heart.
From our clinic: Rise slowly from bed at night.
General information for patients, not a substitute for your doctor's advice. Your dose and plan may differ.
Details are taken from the maker's pack listing and our billing system. Prices are MRP and may change. This page is not medical advice: do not start, stop or switch a medicine without your doctor. Page updated 23 Oct 2026.