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...
Lugol’s iodine: What It Is, Real Benefits, Safe Dosing, and Risks Explained
Lugol’s iodine is a simple mixture of elemental iodine (I₂) and potassium iodide (KI) dissolved in water. Created in 1829 by French physician J....
Lumbrokinase: Fibrin Support, Stroke Recovery Insights, How to Use It, and Safety Considerations
Lumbrokinase is a group of fibrin-targeting enzymes originally isolated from earthworms and now produced under modern quality controls. People turn to it to support...
Lupeol: Anti-Inflammatory and Antioxidant Properties, Evidence, Dosage, and Side Effects
Lupeol is a plant-derived triterpenoid found in mango, olive, aloe, and many medicinal herbs. Over the past two decades it has drawn wide attention...
Lupin protein: Cardiometabolic Benefits, Daily Dosage Guidelines, Uses in Cooking, and Side Effects
Lupin protein has moved from niche ingredient to serious contender among plant proteins. Milled from the seeds of Lupinus species—most commonly white (Lupinus albus)...
Lutein: Eye Health Benefits, How to Use It, Recommended Dosage, and Side Effects
Lutein is a yellow-orange carotenoid concentrated in the macula—the tiny, central area of the retina responsible for sharp, detailed vision. Because the body cannot...
Luteolin: Neuroinflammation Support, Evidence-Based Benefits, How to Use, and Risks
Luteolin is a naturally occurring flavonoid found in foods like celery, parsley, thyme, green peppers, and chamomile. Over the last decade, it has drawn...
L-Valine: Evidence-Based Benefits for Athletes, How to Use, Dosage, and Risks
L-valine is one of the three branched-chain amino acids (BCAAs), alongside leucine and isoleucine. As an essential amino acid, your body cannot make it;...
Lychee fruit extract: Visceral Fat Support, Muscle and Circulation Benefits, Dosage Guide, and Side Effects
Lychee fruit extract is best known for a standardized form called “oligomerized polyphenols” (often marketed as Oligonol), made from Litchi chinensis. It concentrates small,...
Lycopene: Evidence for Skin and Cardiovascular Support, Best Sources, Dosage, and Risks
Lycopene is the red carotenoid that gives tomatoes, watermelon, and pink grapefruit their color. Beyond appearances, it acts as a potent singlet-oxygen quencher and...
Lycopus virginicus: Thyroid-Calming Benefits, How to Use, Dosage, and Safety
Lycopus virginicus—commonly called bugleweed—is a traditional North American mint-family herb used for calming symptoms that often accompany mild or early hyperthyroidism, such as a...
Lythrum salicaria: Evidence for Gut Support, Best Preparations, Recommended Dosage, and Side Effects
Known as purple loosestrife, Lythrum salicaria is a wetland plant with a long history in European folk and official medicine for soothing acute diarrhea,...
Kachnar (Bauhinia variegata) guide: health benefits, properties, recommended dosage, and risks
Kachnar (Bauhinia variegata)—also called Kanchanar, Mountain Ebony, or Orchid Tree—is a deciduous tree prized across South and Southeast Asia for its bark, flowers, and...
Kacip Fatimah for women’s health: research-backed benefits, how to take it, dosage, and safety
Kacip Fatimah (Labisia pumila) is a small rainforest herb native to Malaysia and neighboring regions, long valued in traditional Malay medicine for women’s health....
Kadamb benefits and uses explained: dosage guidelines, side effects, and research
Kadamb (Neolamarckia cadamba), also known as Anthocephalus cadamba or the cadamba tree, is a fast-growing, culturally revered tree native to South and Southeast Asia....