Mutant Carnitine is L-carnitine L-tartrate in a stable highly absorbable form enriched with the patented component BioPerine®. L-carnitine is a non-essential amino acid that our body naturally produces and stores in the skeletal muscles, heart and brain. In our diet, it is found in small amounts in meat and fish. The tartrate bond contains approximately 68% pure carnitine and approximately 32% tartrate.