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Creatine is more beneficial for energy production and high-intensity performance, whereas carnitine supports fat oxidation and could improve endurance performance

This process is real, measurable, and temporary

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Ethics declarations Conflict of Interest Diego Maria Michele Fornasari received fees as congress speaker or consultant from the following pharmaceutical companies: Angelini, Abiogen, Alfasigma (the manufacturer of acetyl-l-carnitine), Chiesi, Istituto Gentili, Grunentahl, Molteni, Sandoz, SPA, Viatris, Zambon