Common Gastrointestinal disturbance, Allergic skin rash.

Expert advice for Cystina Capsule
Do not take methylcobalmin if you are allergic (hypersensitive) to methylcobalamin, or any of the other ingredients of this medicine.Tell your doctor if your occupation required you to handle mercury or its compound.Do not use methylcobalamin over a period of months, if there is a lack of satisfactory clinical response.

Q. What is methylcobalamin/ mecobalamin/Neurokind/ Nurokind OD?
Methylcobalamin (mecobalamin/Neurokind/ Nurokind OD) is an active form of vitamin B12. It is water soluble and orally absorbed. It is found in animal-based foods and in supplement form

Q. Is methylcobalamin the same as cyanocobalamin?
No.Cyanocobalamin is different form of vitamin B12

Q. What is Nurokind G, Nurokind plus, Nurokind Next, Nurokind LC, Nurokind Gold?
Nurokind G contains methylcobalmine and gabapentin. Nurokind plus contains methylcobalamin, folic acid, vitamin B1, vitamin B6 and alfa lipoic Acid. Nurokind Next contains methlcobalamin, alphalipoic acid, benfotiamine, pyridoxine hydrochloride, biotin, folic acid, chromium. NurokindL C contains L-carnitine, L-tartrate, methylcobalamin, folic acid. Nurokind Gold contains ginseng extract, mixed carotene 10%, niacinamide, vitamin B6, methylcobalamin, vitamin D3, refined wheat germ oil, folic acid, elemental calcium, elemental phosphorus, ferrous fumarate, zinc sulfate mono hydrate, elemental magnesium, elemental manganese, elemental copper, elemental iodine, elemental potassium.