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Doctor’s Best Acetyl-L-Carnitine with Biosint™, is a vitamin-like nutrient, synthesized in the body from the amino acids lysine and methionine, and supports cognitive function and supports healthy brain neuron function.*
It helps to supply the brain with energy by increasing mitochondrial efficiency, supports nerve growth factor production and helps uphold the integrity of intracellular membranes.*
Acetyl-L-Carnitine supports biosynthesis of Acetylcholine which is a key neurotransmitter for brain and nerve function.
Non-GMO/ Gluten Free/ Vegetarian/ Vegan
Doctor’s Best Acetyl-L-Carnitine is a naturally occurring form of L-Carnitine which is a vitamin-like nutrient synthesized in the body from the amino acids lysine and methionine. It supports cognitive function and supports healthy brain neuron function.* Acetyl-L-Carnitine plays a key role in the production of acetylcholine, an important neurotransmitter for brain and nerve cell function.* Acetyl-L-Carnitine helps supply the brain with energy by increasing mitochondrial efficiency, supports nerve growth factor production and helps to uphold the integrity of intracellular membranes.* Doctor’s Best Acetyl-L-Carnitine contains Biosint™ Acetyl-L-Carnitine, which is manufactured in Italy by the reputable company Sigma-Tau with a patented, FDA-approved process that fully complies with the USP 25, FCC 4 and EU monographs.*
Acetyl-L-Carnitine serves as a transport molecule for “active acetate,” which is a source of fuel for metabolic processes that take place in cells. Acetyl-L-Carnitine carries active acetate (the “Acetyl” portion) directly into the mitochondrion, the cell’s energy-generating structure. Active acetate is used to produce cellular energy in the form of ATP. Unlike L-carnitine, Acetyl-L-Carnitine readily crosses the blood-brain barrier, where it has specific benefits for brain neurons.*
What is the difference between the various carnitine products that Doctor's Best offers?
Doctor's Best offers 2 different carnitine products: L-Carnitine Fumarate, and Acetyl-L-Carnitine. Doctor's Best L-Carnitine Fumarate is in the form of L-Carnitine fumarate. Both products contain BIOSINT L-Carnitine, which is manufactured in Italy by the reputable company Sigma-Tau. Sigma-tau Health Science, Inc has the only FDA-approved pharmaceutical batch process system for consistent L-Carnitine quality, and has been manufacturing L-Carnitine derivatives for 30 years.
Is Acetyl-L-Carnitine a tartrate, citrate or fumarate, etc?
Doctor's Best Acetyl-L-Carnitine is pure Acetyl-L-Carnitine. This is different from fumarate, tartrate and fumarate.
What is the country of origin for Doctor's Best products?
Doctor’s Best products are quality tested and manufactured in the United States using highly qualified cGMP manufacturers and raw material ingredients. Doctor’s Best sources raw materials from around the world and ingredients are subject to the intense testing and verification regardless of geography of origin.
Doctor’s Best Acetyl-L-Carnitine is a naturally occurring form of L-Carnitine which is a vitamin-like nutrient synthesized in the body from the amino acids lysine and methionine. It supports cognitive function and supports healthy brain neuron function.* Acetyl-L-Carnitine plays a key role in the production of acetylcholine, an important neurotransmitter for brain and nerve cell function.* Acetyl-L-Carnitine helps supply the brain with energy by increasing mitochondrial efficiency, supports nerve growth factor production and helps to uphold the integrity of intracellular membranes.* Doctor’s Best Acetyl-L-Carnitine contains Biosint™ Acetyl-L-Carnitine, which is manufactured in Italy by the reputable company Sigma-Tau with a patented, FDA-approved process that fully complies with the USP 25, FCC 4 and EU monographs.*
Acetyl-L-Carnitine serves as a transport molecule for “active acetate,” which is a source of fuel for metabolic processes that take place in cells. Acetyl-L-Carnitine carries active acetate (the “Acetyl” portion) directly into the mitochondrion, the cell’s energy-generating structure. Active acetate is used to produce cellular energy in the form of ATP. Unlike L-carnitine, Acetyl-L-Carnitine readily crosses the blood-brain barrier, where it has specific benefits for brain neurons.*
What is the difference between the various carnitine products that Doctor's Best offers?
Doctor's Best offers 2 different carnitine products: L-Carnitine Fumarate, and Acetyl-L-Carnitine. Doctor's Best L-Carnitine Fumarate is in the form of L-Carnitine fumarate. Both products contain BIOSINT L-Carnitine, which is manufactured in Italy by the reputable company Sigma-Tau. Sigma-tau Health Science, Inc has the only FDA-approved pharmaceutical batch process system for consistent L-Carnitine quality, and has been manufacturing L-Carnitine derivatives for 30 years.
Is Acetyl-L-Carnitine a tartrate, citrate or fumarate, etc?
Doctor's Best Acetyl-L-Carnitine is pure Acetyl-L-Carnitine. This is different from fumarate, tartrate and fumarate.
What is the country of origin for Doctor's Best products?
Doctor’s Best products are quality tested and manufactured in the United States using highly qualified cGMP manufacturers and raw material ingredients. Doctor’s Best sources raw materials from around the world and ingredients are subject to the intense testing and verification regardless of geography of origin.
L-Carnitine Fumarate featuring Sigma Tau® Carnitine 855mg 
Alpha-Lipoic Acid 150mg 
Alpha-Lipoic Acid 600mg 
Stabilized R-Lipoic Acid with BioEnhanced® Na-RALA 100mg 
Stabilized R-Lipoic Acid with BioEnhanced® Na-RALA 200mg 
Phosphatidyl Serine 100mg (Veggie Caps)