Described herein is a method for increasing levels of S-adenosylmethionine within the human body without administering S-adenosylmethionine directly. The method of the invention may be achieved by administering one or more of L-methionine, methylcobalamin, 5-Methyl tetrahydrofolate, betaine, and malic acid, together. with at least one compound selected from the group consisting of folic acid, vitamin B12, magnesium, calcium, and other cofactors.
