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KLEAN PROBIOTIC by Douglas LabsBalances bacteria in your gut so that the vitamins and nutrients you need to perform can be properly absorbed into your bloodstream.Klean Probiotic is key to the overall health of the digestive system. This formula prom…

KLEAN RECOVERY by Douglas Labs4:1 carbohydrate to protein ratio to be taken post-workout or competition.Klean Recovery™ is a delicious milk chocolate flavored powder formulated with the athlete's recovery in mind. A 4:1 ratio of carbohydrates to prot…

KLEAN ZINC by Douglas LabsKlean Zinc is a natural orange flavored chewable tablet, designed to support immune function.Athletes depend on their body’s ability to perform at its best through daily intense training and competition. A key factor which m…

KLEAN-C by Douglas LabsA delicious, strawberry orange-flavored chewable tablet delivering 525 mg of Vitamin C.Klean-C is a delicious, strawberry orange-flavored chewable tablet delivering 525 mg of Vitamin C. This specially formulated tablet utilizes…

KLEAN-D 1000 by Douglas LabsTargeted support when your body can't produce Vitamin D naturally.Klean-D contains 25 mcg (1,000 IU) of natural vitamin D3 per tablet. Vitamin D supplementation may help support immune health, musculoskeletal strength and.…

KLEAN-D 5000 by Douglas LabsTargeted support when your body can't produce Vitamin D naturally.Klean-D contains 5,000 IU of natural vitamin D3 per tablet. Vitamin D supplementation may help support immune health, musculoskeletal strength and physical.…

KORATATE Potassium 99MG 100 count by Anabolic Labs General Wellness Koratate 99 mg by Anabolic Laboratories is a highly bioavailable potassium supplement that may work to support overall well-being in several ways. First‚ potassium might work t…

DiscontinuedKre-Alkalyn by Pure EncapsulationsKre-Alkalyn may support energy, endurance, stamina, muscle comfort and body composition. Kre-Alkalyn also provides enhanced support for lactic acid and metabolic acid buffering.Support for energy and musc…

KRILL OIL by Douglas LabsKrill Oil supplies the omega-3 fatty acids EPA and DHA, phospholipids, and astaxanthin for many health benefits, such as cognitive, heart and joint health.

Krill-Plex 120 capsules by Pure EncapsulationsSupport for cognitive and cardiovascular functionMay support physical and emotional well-being during menstrual cyclesKrill-plex is a unique blend of omega-3 fatty acids, phospholipids and antioxidants th…

Krill-Plex 60 capsules by Pure Encapsulations Support for cognitive and cardiovascular functionMay support physical and emotional well-being during menstrual cyclesKrill-plex is a unique blend of omega-3 fatty acids, phospholipids and antioxidants th…

Ks Kidney S by Systemic FormulasThis formula supports normalized kidney function. This is the preeminent kidney support formula for regulating pH, maintaining electrolyte balance, and contributes nutrients used in the self-cleansing processes. Where…

KYRO Muscle Tissue Ligament by Systemic FormulasSupport for ligaments, muscles and tissues. Helpful in promoting comfort post exercise. KYRO was designed to be used for healthy muscle after sports and exercise exertion. It is also a favorite for supp…

L Liver by Systemic FormulasThis is the preeminent liver building formula that supports building & maintenance of the liver’s intercellular tissues. This formula provides herbal and bioenergetic nutrition for the liver including softening, and...

L-ARGININE by Douglas LabsL-Arginine 500 mg capsule.L-Arginine capsules contain 500 mg pure, crystalline L-arginine.

L-ARGININE (700 MG) by Douglas LabsL-Arginine 700 mg capsule.L-Arginine capsules contain 700 mg pure, crystalline L-arginine.

L-Arginine - Sustained Release (formerly Perfusia-SR) by Thorne Heart&Vessels L-Arginine - Sustained Release promotes the production of nitric oxide in the arteries.* The vascular benefits include improved blood flow and maintenance of normal blo…

L-Arginine 180 capsules by Pure EncapsulationsHelps healthy dilation of blood vessels and blood flowMay support healthy sexual functionMade with hypoallergenic, vegan ingredientsl-Arginine promotes cardiovascular health, immune support, sexual functi…

L-Arginine 90 capsules by Pure EncapsulationsHelps healthy dilation of blood vessels and blood flowMay support healthy sexual functionMade with hypoallergenic, vegan ingredientsl-Arginine promotes cardiovascular health, immune support, sexual functio…

L-Arginine by NuMedica is a semi-essential amino acid that is often found at the active (or catalytic) site in proteins and enzymes. It plays several roles in the body which may include vasodilation, cell division, removal of ammonia from the body an…

L-Arginine Plus (formerly Perfusia Plus) by Thorne Heart&Vessels L-Arginine Plus provides cardiovascular benefits by promoting nitric oxide production in the arteries, with nutrients and botanicals to support optimal blood flow, including penile.…

L-Carnitine 120 capsules by Pure EncapsulationsSupports cardiovascular health and endurancePromotes proper fat utilizationMade with hypoallergenic, vegan ingredientsl-Carnitine supports cardiovascular health by supporting proper fat utilization...

L-Carnitine by Ortho MolecularL-carnitine has been shown to stimulate the use of fat for fuel and boost metabolism, making it essential to energy generation in the body.L-carnitine is an amino acid essential for the transport of fatty acids into the …

L-Carnitine 60 capsules by Pure EncapsulationsSupports cardiovascular health and endurancePromotes proper fat utilizationMade with hypoallergenic, vegan ingredientsl-Carnitine supports cardiovascular health by supporting proper fat utilization...

L-Carnitine by Ortho MolecularL-carnitine has been shown to stimulate the use of fat for fuel and boost metabolism, making it essential to energy generation in the body.L-carnitine is an amino acid essential for the transport of fatty acids into the …

L-Carnitine Support for Fat Metabolism* L-Carnitine plays a role in free fatty acid metabolism and metabolic health and is required for the breakdown of fats and glucose into energy. Decreased levels of L-carnitine have been observed during...

L-Carnitine Fumarate by Pure EncapsulationsSupports cardiovascular health and fat metabolismHelps generate energyMade with hypoallergenic, vegan ingredientsl-Carnitine fumarate helps to support muscular and cardiovascular energy. l-Carnitine fumarate…

L-Carnosine 120 capsules by Pure EncapsulationsAntioxidant support for cell protectionMade with hypoallergenic, vegan ingredientsl-Carnosine is an antioxidant formula to help the body maintain healthy protein and cellular function in various tissue..…

L-Carnosine 60 capsules by Pure Encapsulations Antioxidant support for cell protectionMade with hypoallergenic, vegan ingredientsl-Carnosine is an antioxidant formula to help the body maintain healthy protein and cellular function in various tissue..…

L-CARNOSINE by Douglas LabsL-Carnosine 500 mg capsule.L-Carnosine capsules supply 500 mg of pure L-carnosine.

L-Dopa by Desbio Meridian Openers | PhenolicsL-Dopa is a basic neurotransmitter related to brain function. It is found in many foods where it is involved with the enzymatic action that causes the browning found in peaches, apples, apricots, and banan…

L-GLUTAMINE + FOS POWDER by Douglas LabsL-glutamine plus prebiotic fiber for GI Support.The amino acid glutamine plays a key role in the metabolism, structure, and function of the entire gastro-intestinal (GI) tract and its extensive immune system...

l-Glutamine 500mg by Pure EncapsulationsSupports gastrointestinal tractHelps maintain intestinal integrityMade with hypoallergenic, vegan ingredientsl-Glutamine naturally supports the mucosal lining and healthy functioning of the gastrointestinal tra…

l-Glutamine 850mg by Pure Encapsulations Supports gastrointestinal tractHelps maintain intestinal integrityMade with hypoallergenic, vegan ingredientsl-Glutamine naturally supports the mucosal lining and healthy functioning of the gastrointestinal tr…

l-Glutamine 850mg (90 capsules) by Pure EncapsulationsSupports gastrointestinal tractHelps maintain intestinal integrityMade with hypoallergenic, vegan ingredientsNutritionally supports the mucosal lining and the healthy functioning of the...

L-GLUTAMINE by Douglas LabsL-Glutamine 500 mg capsule.L-Glutamine 500 mg capsules contain 500 mg of pure crystalline L-glutamine.

L-Glutamine by Thorne Amino Acid L-glutamine is an amino acid that supports a healthy intestinal lining and optimal immune function, in addition to assisting healing after injury or surgery and muscle cell repair. L-glutamine, the most prevalent amin…

L-GLUTAMINE CAPS 500MG 100 count by Anabolic Labs500 mg capsules of free form amino acid L-glutamine. The body's need for glutamine increases significantly when stressed by exercise, illness, or trauma. It is a key supportive nutrient for the immune,…

L-GLUTAMINE POWDER by Douglas LabsPure L-Glutamine powder 4 g.A key amino acid for intestinal health and immune function, providing 4,000 mg of pure L-glutamine per serving.

L-Glutamine Powder by NuMedicaThe most abundant amino acid (building block of protein) in the bloodstream and is transported and metabolized in the majority of tissues. L-Glutamine may be regarded as one of the most important of the amino acids when …

l-Glutamine powder by Pure EncapsulationsSupports gastrointestinal tractHelps maintain intestinal integrityMade with hypoallergenic, vegan ingredientsConvenient powder formula for easy dispensingl-Glutamine naturally supports the mucosal lining and..…

L-Glutamine Powder by Thorne Gut Health Thorne's L-Glutamine Powder is NSF Certified for Sport®. Evidence suggests supplemental L-glutamine benefits gastrointestinal health, supports wound healing, maintains immune health, and helps restore plasm…

L-Glutathione by Ortho MolecularGlutathione is the master antioxidant in the body and is heavily concentrated in tissues such as the liver, spleen and heart. Therefore, it plays a crucial role in immune function, detoxification capacity and protectio…

L-Lysine 270 capsules by Pure EncapsulationsPromotes healthy immune functionHelps maintain healthy gum and lip tissueMade with hypoallergenic, vegan ingredientsl-Lysine is an amino acid blend that maintains healthy gum and lip tissue.Helps maintain..…

L-Lysine 90 capsules by Pure Encapsulations Promotes healthy immune functionHelps maintain healthy gum and lip tissueMade with hypoallergenic, vegan ingredientsl-Lysine is an amino acid blend that maintains healthy gum and lip tissue.Helps maintain..…

L-LYSINE CAP 500MG 50 count by Anabolic LabsSupports Immune Function and Tissue GrowthAmino acids are needed by the body to rebuild and repair tissues and muscles, as well as to assist in making enzymes, proteins, and antibodies. L-Lysine is one of t…

L-METHIONINE by Douglas LabsL-Methionine 500 mg capsule.L-Methionine supplies 500 mg of this essential amino acid.

L-Methionine by Pure EncapsulationsMay support liver and pancreas functionMade with hypoallergenic, vegan ingredientsIn combination with antioxidants, I-Methionine may play a role in healthy liver and pancreas function.Foundational amino acid...

L-SERINE by Douglas LabsL-Serine 500 mg capsule.L-Serine supplies 500 mg of the amino acid in each capsule.

L-Theanine (120 ct) by NuMedicaA naturally occurring, unique amino acid found in green tea leaves. NuMedica’s L-Theanine is Suntheanine – the most respected and clinically tested L-Theanine on the market. L-Theanine may promote a sense of relaxation.…

L-Theanine (60 ct) by NuMedicaA naturally occurring, unique amino acid found in green tea leaves. NuMedica’s L-Theanine is Suntheanine – the most respected and clinically tested L-Theanine on the market. L-Theanine may promote a sense of relaxation..…

L-Theanine 120 capsules by Pure EncapsulationsPromotes relaxationHelps moderate occasional stressMade with hypoallergenic, vegan ingredientsl-Theanine is a unique amino acid blend that helps promote relaxation without causing drowsiness. I-Theanine …

L-Theanine 200 mg by Vital Nutrients Stress and Emotional Support L-Theanine is a unique amino acid present almost exclusively in the tea plant (Camellia sinensis).* Theanine helps maintain a sense of well-being and increases alpha brain wave activit…

L-Theanine 60 capsules by Pure Encapsulations Promotes relaxationHelps moderate occasional stressMade with hypoallergenic, vegan ingredientsl-Theanine is a unique amino acid blend that helps promote relaxation without causing drowsiness. I-Theanine …

L-THEANINE by Douglas LabsPromotes a feeling of calmness.L-Theanine supplies 100 mg of pure L-theanine in each vegetarian capsule. L-Theanine is an amino acid that may promote a sense of calmness.

L-Theanine Liquid (Natural Lemon) by NuMedicaA naturally occurring, unique amino acid found in green tea leaves. NuMedica’s L-Theanine is Suntheanine, the most respected source and the one which has been used in scientific studies. L-Theanine may pro…

L-Tryptophan 180 capsules by Pure EncapsulationsSupports emotional well-being and restful sleepPromotes healthy sleep quality, onset and durationMade with hypoallergenic, vegan ingredientsL-Tryptophan promotes serotonin synthesis to support emotional…

L-Tryptophan 90 capsules by Pure Encapsulations Supports emotional well-being and restful sleepPromotes healthy sleep quality, onset and durationMade with hypoallergenic, vegan ingredientsL-Tryptophan promotes serotonin synthesis to support emotional…

L-TRYPTOPHAN by Douglas LabsL-Tryptophan is an essential amino acid and a precursor for the synthesis of serotonin. Tryptophan crosses the blood-brain barrier and is converted to L-5-Hydroxytryptophan (5-HTP), which in turn is converted into serotoni…