Chemically, Carnitine comes in two stereo-isomeric forms: L-Carnitine and D-Carnitine, but only the L-form is biologically active and occurs in nature.
The D-isomer and the D,L-racemate are synthetic substances.
Only the L-form has been approved and recommended as a feed additive. Supplementation with D-Carnitine has shown to be detrimental to the animal’s health and well-being.
Lonza's Carniking™ and Carnifeed™ only contain L-Carnitine.
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