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L-arginine was first isolated in 1886. It is an amino acid, which is a chemical building block to make proteins. The body usually makes enough L-arginine, but…
Tyrosine is an amino acid that is used by the body to make proteins. It is a building block for thyroid hormones, melanin, and neurotransmitters (chemical…
Lavender is native to the Mediterranean region, Africa, Russia, and the Arabian Peninsula. It was used in ancient Egypt as part of the process for mummifying…
Lemon balm is a perennial, lemon-scented herb with pointed, heart-shaped or oval leaves and small white or yellow flowers. It is from the same family as mint…
Most licorice is grown in Europe, Asia, and the Middle East. Licorice contains a compound called glycyrrhizin (or glycyrrhizic acid). Licorice has a long…
Lungwort is a flowering perennial plant that originated in Europe and Asia and was introduced to North America. Traditionally, lungwort has been used to treat…
Lysine is one of the essential amino acids. This means that although the body needs lysine to make proteins, it cannot manufacture its own lysine. The body…
