Taurine is a non-protein amino acid present in the brain, retina and muscle and widely used in supplements and energy drinks to support vitality and physical performance. Clinical research suggests benefits for exercise performance and cardiovascular markers, but results are preliminary and individual responses vary.
L-Cystine is a sulfur-containing amino acid dimer commonly included in nutricosmetic supplements to support hair and nail appearance. It is valued for contributing sulfur used in keratin formation and is often paired with vitamins and minerals. Individual responses and safety considerations may vary.
L-Citrulline is a naturally occurring amino acid found in watermelon and produced in the small intestine that supports muscle metabolism, vascular function, and brain metabolic processes when used as a supplement. Typical supplemental doses range from 3 to 5 grams taken orally, often before exercise.
L‑lysine is an essential amino acid present in protein-rich foods and used in supplements to support muscle recovery and collagen formation. Research suggests it may help with muscle repair and reduce recurrence of herpes simplex in some people. Individual responses vary; consult a clinician for guidance.
L-Methionine is an essential sulfur-containing amino acid commonly included in nutricosmetic supplements to support hair and nail appearance. Dietary intake matters, especially for people limiting animal proteins, and individual needs vary. Consult a healthcare professional before supplementing, as safety considerations and contraindications apply.
Supplemental L-Arginine supports blood-flow related effects and is used to enhance muscle pump, circulation and erectile performance in some people. It is a semi-essential amino acid and precursor to nitric oxide, with variable individual responses and potential contraindications that may warrant professional guidance.
L-Carnitine supports mitochondrial fatty acid transport and is commonly used in sports and weight‑management supplements. Research suggests it may support exercise performance, recovery, and modest reductions in body mass index in some studies. Individual responses vary; consult a professional for personalized advice.
Amino acids are the building blocks of proteins and are used to support energy, muscle maintenance and immune-related proteins through diet or supplements. Essential amino acids must be obtained from food or concentrated sources such as spirulina or targeted supplements.