Pyridoxine

Pyridoxine, also known as vitamin B₆, is a form of vitamin B₆ found commonly in food and used as dietary supplement. As a supplement it is used to treat and prevent pyridoxine deficiency, sideroblastic anaemia, pyridoxine-dependent epilepsy, certain metabolic disorders, side effects or complications of isoniazid use, and certain types of mushroom poisoning.It is used by mouth or by injection.

It is usually well tolerated. Occasionally side effects include headache, numbness, and sleepiness. Normal doses are safe during pregnancy and breastfeeding. Pyridoxine is in the vitamin B family of vitamins. It is required by the body to make amino acids, carbohydrates, and lipids. Sources in the diet include fruit, vegetables, and grain.

Pyridoxine was discovered in 1934, isolated in 1938, and first made in 1939.It is on the World Health Organization's List of Essential Medicines, the safest and most effective medicines needed in a health system. Pyridoxine is available both as a generic medication and over the counter product. The wholesale cost in the developing world is about US$0.59–3.54 per month. Foods, such as breakfast cereal have pyridoxine added in some countries.