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Vitamin B6 & B12 - Benefits and Dosage

Updated: Jul 10, 2020

Why do I need B vitamins?

B vitamins are an important class of vitamins that help support your red blood cells and your nervous system. B vitamins are also important for energy levels.The vitamins also provide a host of other benefits. Among other things, vitamin B6 helps keep blood sugar within a normal range, vitamin B12 protects against anemia, and folate (folic acid) helps prevent changes to your DNA that could lead to cancer.

Vitamin B6 can be found in certain foods such as cereals, beans, vegetables, liver, meat, and eggs. It can also be made in a laboratory.

Vitamin B6 is used for preventing and treating low levels of pyridoxine (pyridoxine deficiency) and the anemia that may result.

Vitamin B6 is frequently used in combination with other B vitamins in vitamin B complex products.

ADULTS Dose – Vitamin B6


  • For a condition in which the body make abnormal red blood cells that build up iron (sideroblastic anemia): Initially, 200-600 mg of vitamin B6 is used. The dose is decreased to 30-50 mg per day after an adequate response.

  • For vitamin B6 deficiency: In most adults, the typical dose is 2.5-25 mg daily for three weeks then 1.5-2.5 mg per day thereafter. In women taking birth control pills, the dose is 25-30 mg per day.

  • For morning sickness: 10-25 mg of vitamin B6 taken three or four times per day has been used. In people who don't respond to vitamin B6 alone, a combination product containing vitamin B6 and the drug doxylamine (Diclectin, Duchesnay Inc.) is used three or four times per day. Also, another product containing 75 mg of vitamin B6, 12 mcg of vitamin B12, 1 mg of folic acid, and 200 mg of calcium (PremesisRx, KV Pharmaceuticals) is used daily.


A condition in which the body makes abnormal red blood cells that build up iron

(sideroblastic anemia): 250 mg of vitamin B6 daily, reduced to 250 mg of vitamin B6 weekly.

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