Lipotropics are necessary for maintenance of a healthy liver, and for burning the exported fat for additional energy.
Though choline can be synthesized from methionine or serine, mammals don't produce a sufficient amount on their own.
Liver, eggs, wheat bran, meat, and broccoli are dietary sources of choline.
[citation needed] Methionine, an essential amino acid, is a major lipotropic compound in humans.
Glutathione and other sulfur-containing peptides play a critical role in defending against toxic compounds.