Homocysteine Resist is a specially formulated B vitamin supplement for cardiovascular and brain health. Homocysteine is a natural compound produced by your cells. Over time, it can begin to build up in the bloodstream, affecting cardiovascular health, cognitive function and more. Homocysteine Resist combines vitamins B2, B6, B12 and folate as L-5-MTHF to help maintain healthy homocysteine levels for cardiovascular and brain health. B vitamins are used in the body for multiple aspects of health, including metabolizing amino acids and lipids, supporting neurotransmitter synthesis, and assisting in the body's energy production.