Cerefolin is a prescription medication made by Pamlab that contains 5.6 mg of folic acid

Folic acid

Folic acid and folate , as well as pteroyl-L-glutamic acid, pteroyl-L-glutamate, and pteroylmonoglutamic acid are forms of the water-soluble vitamin B9...

 as L-methylfolate, 2 mg of vitamin B₁₂

Vitamin B12

Vitamin B12, vitamin B12 or vitamin B-12, also called cobalamin, is a water-soluble vitamin with a key role in the normal functioning of the brain and nervous system, and for the formation of blood. It is one of the eight B vitamins...

 as methylcobalamin and 600 mg of N-acetylcysteine (NAC). It is approved by the U.S. Food and Drug Administration for the treatment or prevention of vitamin deficiencies, but is used off-label to treat homocystinemia and homocystinuria

Homocystinuria

Homocystinuria, also known as cystathionine beta synthase deficiency or CBS deficiency, is an inherited disorder of the metabolism of the amino acid methionine, often involving cystathionine beta synthase...

. Some health care providers believe that reducing blood levels of homocysteine

Homocysteine

Homocysteine is a non-protein amino acid with the formula HSCH2CH2CHCO2H. It is a homologue of the amino acid cysteine, differing by an additional methylene group. It is biosynthesized from methionine by the removal of its terminal Cε methyl group...

 will reduce risks of certain cardiovascular diseases such as heart attacks and stroke. It is also being prescribed off-label by psychiatrists as an SSRI augmentor based on the perceived benefits of folate augmentation.