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Jarrow Formulas

  • Metabolism of carbohydrates.
  • Energy.
  • Enzymes.

L-Carnitine is an amino acid found in high concentrations in heart and liver tissues. Primarily, L-Carnitine helps to transport fatty acids into the mitochondria, where they are converted to energy. Studies demonstrate that L-carnitine may be able to increase healthy heart muscle tissue and maintain essential enzyme activity, boost cardiovascular energy, promote recovery after exercise, and sustain healthy fat metabolism. L-Carnitine also assists carbohydrates metabolism and bolsters the oxidative phosphorylation rate, which is the final stage of energy production.

L-Carnitine works well in combination with Co-Q10, an energy cofactor and antioxidant that is found in the inner membrane of the mitochondria.

Biosint™ L-Carnitine is manufactured by the pioneer in L-Carnitine science, Sigma-Tau Industries, S.p.A. (Rome, Italy).

Suggested Use: Take 1 to 4 capsules per day, or as directed by your qualified health care consultant.

Supplemental Facts
Serving Size: 1 Capsule(s)

IngredientsPer Serving% DV
L-Carnitine (from 431 L-Carnitine Fumarate) 250 mg *
* Daily Value Not Established

Notes: L-Carnitine is an amino acid found in high concentrations in heart and liver tissues, where it participates in metabolizing fatty acids into energy in the mitochondria.* L-Carnitine also facilitates the metabolism of carbohydrates and enhances the rate of oxidative phosphorylation, the final stage of ATP (i.e., energy) production.* L-Carnitine works synergistically with Co-Q10, an antioxidant and energy cofactor that is found in the inner membrane of the mitochondria.* Biosint™ L-Carnitine is manufactured by Sigma-Tau Industries, S.p.A. (Rome, Italy), the pioneer in L-Carnitine science.

Other Ingredients: Cellulose, magnesium stearate (vegetable source) and silicon dioxide. Capsule consists of hydroxypropyl methylcellulose. DuraCarn™ L-Carnitine Fumarate is a superior, stable form of L-Carnitine and is 58% carnitine by weight. 431 mg of L-Carnitine Fumarate yields 250 mg elemental L-Carnitine. No wheat, no gluten, no soy, no dairy, no egg, no fish/shellfish, no nuts/tree nuts. Suitable for vegetarians/vegans.

Caution: Keep out of the reach of children.


  • Amino Acids