l carnitine is it effective The bright and the dark sides of L-carnitine supplementation: a systematic review | Journal of the International Society of Sports Nutrition L-CARNITINE 3000 mg- 60-240 Capsules

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Water, Centella Asiatica Extract (12.3%), Glycerin, Cetyl Ethylhexanoate, Cetearyl Alcohol, Glyceryl Stearate, Glutathione (1,000ppm), Niacinamide (1,000ppm), Madecassic Acid, Asiaticoside, Asiatic Acid, Solanum Melongena (Eggplant) Fruit Extract, Melaleuca Alternifolia (Tea Tree) Leaf Extract, Hydrolyzed Collagen, Beta-Glucan, Hippophae Rhamnoides Fruit Extract, Nelumbo Nucifera Extract, Artemisia Annua Extract, Oryza Sativa (Rice) Extract, Saccharomyces Ferment, Squalane, Sodium Hyaluronate, Dipropylene Glycol, Butylene Glycol, Hydrogenated Lecithin, Cholesterol, Xanthan Gum, Potassium Hydroxide, Disodium EDTA, Caprylic/Capric Triglyceride, Cyclopentasiloxane, Cyclohexasiloxane, Saccharide Hydrolysate, Sorbitan Stearate, Dimethicone, PEG-100 Stearate, Stearic Acid, 1,2-Hexanediol, Chlorphenesin, Carbomer, Caprylyl Glycol

A case in point is metformin, a commonly used drug to treat type 2 diabetes mellitus

Cui et al., 1999