Food and Drug Administration as a weight loss management treatment for people with obesity or those who are overweight with at least one related underlying condition such as high blood pressure
Unfortunately it later turned out that oral bioavailability in humans is dramatically lower than in rodents

Ingredients Maltodextrin, Bulking Agent: Microcrystalline Cellulose, Vitamin C (Ascorbic Acid [Hydroxypropylmethylcellulose & Tartaric Acid]), Magnesium Oxide, L-Carnitine Tartrate, Inositol (Carrier: Acacia Gum) Vitamin E (D-Alpha Tocopheryl Acid Succinate) (from Soya ), Maca Extract, Zinc Sulphate, Tablet Coating: (Hydroxypropylmethylcellulose, Glycerin, Colours [Iron Oxides]), Crosslinked Cellulose Gum, Pine Bark Extract, Anti-Caking Agents: Stearic Acid, Magnesium Stearate & Silicon Dioxide, Thiamin (Vitamin B1 as Mononitrate [Carrier: Hydroxypropylmethylcellulose]), Niacin (as Nicotinamide), Ferrous Fumarate, Citrus Bioflavonoids, Pantothenic Acid (as Calcium Salt), Vitamin B6 (Pyridoxine HCl), L-Arginine, Vitamin A (as Acetate [Carriers: Acacia, Starch, Maltodextrin, Antioxidants: DL-Alpha Tocopherol]), Vitamin D3 (Cholecalciferol [Carriers: Acacia, Sucrose, Corn Starch, Medium Chain Triglycerides, Antioxidant: DL-Alpha Tocopherol]), Siberian Ginseng Extract, Riboflavin, Octacosanol (Rice Bran), Copper Sulphate, L-Glutathione, Coenzyme Q10 (CoQ10), Manganese Sulphate, Lycopene Extract, Folic Acid (as Pteroylmonoglutamic Acid), Sodium Selenate, Chromium Trichloride, Biotin, Vitamin B12 (Cyanocobalamin)

Whether youre healing from an injury, pushing through intense workouts or simply trying to stay energized and focused throughout the day, amino acids play a vital role
At clinics such as Vera Clinic London, B12 injections are offered as a quick wellness treatment designed to support energy levels, metabolism, and overall wellbeing
Simultaneously, NAD+ levels increased by 1.2 to 1.6 fold compared to untreated cells