What is BH4?

An Introduction to BH4

BH4, also known as Tetrahydrobiopterin, is a type of chemical compound called a coenzyme. Coenzymes can be considered "helper molecules", because they can assist in biochemical changes that occur in the body.

As a coenzyme, BH4 is involved in helping to transform several amino acids into neurotransmitters (Serotonin, Dopamine, Norepinephrine, Epinephrine), and BH4 also helps to produce Nitric oxide (NO).

Here is a summary of the BH4-related biochemical transformations: