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Doctor's Best High Potency Serrapeptase 120,000 SPU 90 CapsulesSerrapeptase is a proteolytic enzyme (breaks down protein) isolated from the non-pathogenic serratia species found in the digestive tract of the Japanese silkworm. The enzyme is used by the worms to digest their cocoons.Serrapeptase..

Doctor's Best L-Theanine with Suntheanine 150mg 90 CapsulesL-theanine with Suntheanine is an amino acid derived from green tea (produced in Japan) that is responsible for the relaxation-inducing effect of tea consumption. L-theanine is synthesized in the roots of tea plants and transported to t..

Doctor's Best L-Tyrosine 500mg 120 CapsulesWhat is L-Tyrosine? Doctor’s Best Tyrosine is a conditionally essential amino acid that is a precursor to the catecholamine transmitters, dopamine, epinephrine, and norepinephrine. These are vital messengers for the brain and the body’s other nerve networks..

Doctor's Best PQQ with BioPQQ 20mg 30 CapsulesWhat is PQQ?Promotes healthy mitochondrial functionDoctor’s Best PQQ with BioPQQ™ promotes mitochondrial biogenesis and survival and energy production. BioPQQ™ contains pyrroloquinoline quinone, a polyphenol nutrient that is an antioxidant and cell regul..

Doctor's Best SAM-e 200mg 60 TabletsSAMe is a natural substance found throughout the body that is synthesized from the amino acid Methionine and is one of the most important methyl donors in the central nervous system. Methylation is an essential process in ensuring the proper function of a number o..

Doctor's Best SAM-e Double Strength 400mg 60 TabletsSAMe is a natural substance found throughout the body that is synthesized from the amino acid Methionine and is one of the most important methyl donors in the central nervous system. Methylation is an essential process in ensuring the proper functi..

Doctor's Best Stabilized R-Lipoic Acid 100mg 60 CapsulesAlpha-lipoic acid (ALA) is a sulfur–containing fatty acid that functions as a co-enzyme in the metabolism of carbohydrates and in this way is similar to B-complex vitamins. ALA functions as both a water and fat soluble antioxidant. It is a..

Doctor's Best Ubiquinol 100mg 60 SoftgelsUbiquinol with Kaneka QH contains the reduced form of coenzyme Q10. Both ubiquinol (CoQ10-H2) and ubiquinone (CoQ10) are metabolically active, and are interchangeable in the body according to needs. Each form has unique roles in cells including anti..