nih.gov l carnitine & l tartrate are the same thing L-Carnitine Supplementation for 5 Weeks Improves Exercise Recovery in Men and Women: A Randomized, Double-Blind, Placebo-Controlled Trial 2.1-2 The structural formula of

Funding The author(s) declared that financial support was not received for this work and/or its publication

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Who Should Consider Each Supplement Your specific goals should guide your supplement choices: Consider L-Carnitine If: Fat metabolism support is your primary goal You're looking for potential exercise recovery benefits You have specific cardiovascular concerns (with medical supervision) Cognitive support is a priority (particularly ALCAR) You're an endurance athlete looking to optimize fat utilization Consider L-Arginine If: You want to enhance blood flow and the "pump" during resistance training Vascular function is your primary concern You're looking for potential benefits for blood pressure regulation Sexual health is a consideration You want to support wound healing processes Combining Both Some individuals, particularly those engaged in mixed training modalities or seeking both performance and recovery benefits, might benefit from both supplements

10.1038/nm.3145

Finally, supplementation with KG, l-carnitine or acetylcarnitine increased histone acetylation in Kuramochi cells when treated with DNA-damaging agents (Extended Data Fig