Lodhra: Astringent and Cooling Herb for Skin and Women’s Health, Benefits, and Dosage
Lodhra (Symplocos racemosa) is a small evergreen tree native to the Indian subcontinent. In Ayurveda, its bark has long been used for women’s health,...
Logwood: Astringent Properties, How to Use It, Recommended Dosage, and Side Effects
Logwood (Haematoxylum campechianum) is a tropical tree best known for the deep blue-purple dyes made from its heartwood. Beyond textiles, its signature molecule—hematoxylin—became a...
Lomatium: Respiratory Support, Antiviral Properties, How to Use, and Side Effects
Lomatium (often Lomatium dissectum), also called fernleaf biscuitroot or desert parsley, is a hardy Apiaceae plant native to western North America. For generations, Indigenous...
Longan fruit extract: Uses, benefits, dose ranges, and interactions explained
Longan (Dimocarpus longan) is a sweet, grape-like fruit from Southeast Asia whose flesh—called the arillus—has a long history in traditional formulas. Modern extracts concentrate...
Lonicera japonica extract: Evidence-Based Benefits for Respiratory Health and Immunity, Dosage, and Safety
Lonicera japonica—often called Japanese honeysuckle or Jinyinhua—has been brewed as a cooling tea and used in East Asian herbal practice for more than a...
Loquat leaf extract: Evidence-Based Benefits for Respiratory Health and Immunity, Dosage, and Safety
Loquat leaf (Eriobotrya japonica, also known in Chinese as Pi Pa Ye) has a long history in East Asian traditional practice for soothing “lung...
Loranthus parasiticus extract: Anti-Inflammatory Actions, Antioxidant Support, Uses, and Side Effects
Loranthus parasiticus—often listed in English as a parasitic “mistletoe” and known in parts of East and Southeast Asia as Sang Ji Sheng—has been brewed...
Lorenzo’s Oil: Evidence for Asymptomatic ALD Prevention, Dosage, Monitoring, and Risks
Lorenzo’s Oil is a specialized dietary therapy created for X-linked adrenoleukodystrophy (X-ALD), a rare genetic disorder that causes very-long-chain fatty acids (VLCFAs) to accumulate...
L-Ornithine: Ammonia Control, Stress and Sleep Support, Uses, Dosage, and Side Effects
L-ornithine is a non-protein amino acid your body makes as part of the urea cycle—the metabolic pathway that turns ammonia, a toxic by-product of...
Lotus leaf extract: Benefits for Weight and Cholesterol, Practical Use, and Side Effects
Lotus leaf extract (from Nelumbo nucifera leaves) has a long culinary and herbal history across Asia and is increasingly used in modern wellness formulas...
Lotus seed extract: Blood Pressure Support, Antioxidant Actions, Uses, and Side Effects
Lotus seed extract—derived from the edible seeds of Nelumbo nucifera—brings together the nourishment of a staple food and the targeted activity of a botanical....
L-Phenylalanine: Uses for Focus and Mood, Dosage Guidelines, Interactions, and Side Effects
L-phenylalanine (often shortened to L-Phe) is an essential amino acid that your body uses to build proteins and to make tyrosine—the direct precursor to...
L-Proline: Collagen Support, Joint and Skin Benefits, Dosage Guidelines, and Side Effects
L-proline is a nonessential (sometimes “conditionally essential”) amino acid best known for its starring role in collagen—the body’s most abundant structural protein. Proline-rich sequences...
L-Rhamnose: Evidence-Based Benefits for Gut and Skin, How to Take It, Dosage, and Safety
L-rhamnose is a naturally occurring deoxy sugar found in many plants (including citrus peels and buckthorn), in certain bacterial cell walls, and as part...
L-Serine: Evidence-Based Benefits, Practical Uses, Optimal Dosing, and Safety Precautions
L-serine is a nonessential—yet often conditionally essential—amino acid that sits at the crossroads of protein synthesis, cell membranes, and one-carbon metabolism. Your body makes...
L-Taurine: Cardiovascular Support, Metabolic Health, Usage Tips, and Safety Considerations
Taurine is a conditionally essential amino sulfonic acid found in the brain, heart, retina, and skeletal muscle. Unlike most amino acids, it is not...
L-Theanine: Calm Focus, Stress Relief, Sleep Support, Dosage and Side Effects
L-theanine is a non-protein amino acid found naturally in tea leaves (Camellia sinensis) and certain mushrooms. People reach for it to take the “edge”...
L-Threonine: Gut Barrier Support, Immune Function, Daily Intake, and Side Effects
L-threonine (often shortened to threonine) is one of the nine essential amino acids your body cannot make on its own. You get it from...
L-Tryptophan: Sleep Support, Mood Effects, Optimal Timing and Dose, and Side Effects
L-tryptophan (often shortened to “tryptophan”) is an essential amino acid—meaning your body cannot make it and must get it from food or supplements. It...
L-Tyrosine: Benefits for Working Memory and Vigilance, Use Cases, Dosage, and Interactions
L-tyrosine is a conditionally essential amino acid that your body uses to build catecholamine neurotransmitters—dopamine, norepinephrine, and epinephrine—as well as thyroid hormones and skin...