WHY ALLNUTRITION BETAINE HCL + PEPSIN?A SERVING PROVIDES AS MUCH AS 650 MG OF BETAINE HCL150MG OF PEPSIN PER SERVINGUP TO 120 DAYS OF SUPPLEMENTATIONEASY TO SWALLOW CAPSULESBETAINA is an amino acid - also known as trimethylglycine (TMG). It is a derivative of glycine, the simplest protein amino acid. TMG was first isolated in the 19th century from sugar beets (Beta vulgaris - beta is the Latin generic name for beets). This is where the common name betaine comes from, which over time came to refer to a whole class of compounds of this type, and TMG itself was distinguished as glycine betaine.