Nefita injection contains an active component called folic acid, methylcobalamin, nicotinamide, vitamin C. It is used to treat or prevent vitamin deficiency, especially in patients with kidney disease or those on dialysis treatment. It also treats or prevents nerve damage caused by diabetes or other medical conditions. It treats or prevents conditions like vitamin B12 deficiency, vitamin B9 (folic acid) deficiency, and vitamin C deficiency. This medication also manages alcoholic neuropathy, liver disease, pre-and postoperative nutritional support, and general debility and weakness. If you are hypersensitive to Nefita injection or any of the components of this medication, you should not use it. It should not be used in patients with optic atrophy caused by Leber's hereditary optic neuropathy. It should be used cautiously in patients with liver, kidney, and cardiovascular diseases. It may interfere with the absorption of certain medications, such as antibiotics and anticonvulsants. Tell your doctor about all your medications before receiving Nefita injection.  It is generally safe for children and old people, but it should only be used under the supervision of a doctor.