taurine or acetyl l carnitine Creatine & Acetyl-L-Carnitine Energy Plus, 0.51 lb Trio L-Carnitine + Taurine (Cherry)

While short-term LC supplementation has demonstrated positive effects, including increased endurance, improved hepatic fat metabolism, and myocardial stability, evidence indicates that the prolonged supplementation may pose risks, particularly for individuals with pre-existing cardiovascular or renal conditions

Decrease in respiratory quotient during exercise following L-carnitine supplementation

This causes poor intestinal absorption of dietary carnitine, increased urinary loss of carnitine due to poor reabsorption, and defective carnitine uptake by muscles.3 Secondary carnitine deficiencies are typically caused by inherited genetic defects in the metabolism of amino acids, cholesterol, and fatty acids and are also found in patients with end-stage renal disease undergoing hemodialysis, which impairs the reabsorption of carnitine.1 Looking at dietary sources, 3 oz of beef steak provides 42 to 122 mg of L-carnitine, 3 oz of cooked ground beef provides 64 to 74 mg, 1 cup of whole milk provides 8 mg, and 3 oz of cooked chicken breast provides 2 to 4 mg.1 Many energy drinks also contain L-carnitine, according to a 2022 study, but the amounts were not available.4 The bioavailability of dietary carnitine can vary depending on the amount in a meal and whether someone typically eats a plant-based diet or a diet thats higher in meat

L-Carnitine Carnipure from Bioprophyl: 500 mg Lonza L-Carnitine L-Carnitine (from Latin carnis = meat) is a vitamin-like substance that is both obtained through diet and synthesized by the body itself