For most people it eases within a few days to a couple of weeks, and about 75% see gastrointestinal side effects clear within four weeks at a stable dose
This can happen because food stays in the stomach longer due to delayed gastric emptying
L-Carnitine helps combat energy depletion, especially during prolonged stress or after intense workouts [2]
As of September 2025, GLP-1 drugs were priced at nearly $1K per month, although these costs are expected to fall to as low as $350 or less due to price agreements between GLP-1 companies and the Trump administration
L-carnitine may also support exercise recovery by helping to mitigate exercise-induced oxidative stress due to its antioxidant activity [13,14].* Supports Cardiovascular Health L-carnitine has been shown to support healthy cardiovascular function [15]
Hassan C, Antonelli G, Dumonceau JM, Regula J, Bretthauer M, Chaussade S et al (2020) Post-polypectomy colonoscopy surveillance: European Society of Gastrointestinal Endoscopy (ESGE) Guideline Update 2020