We spoke to the experts to find out GHK-Cu explained When it comes to peptides, think of them like keys that open up different locks, shares Dr Omar Babar , medical director at Healand Clinic

L-carnitine supplementation at this critical juncture may enhance the body's capacity to oxidize released fatty acids, potentially improving: Fat oxidation efficiency: Enhanced mitochondrial function supports greater utilization of mobilized fat stores Energy levels: Improved fatty acid metabolism may reduce fatigue often associated with caloric restriction Muscle preservation: L-carnitine's role in protein metabolism may help maintain lean body mass during weight loss Metabolic flexibility: Better substrate utilization may improve metabolic health markers beyond weight alone Clinical Evidence and Emerging Research While large-scale studies specifically examining tirzepatide or semaglutide combined with L-carnitine remain limited, individual component research provides compelling support: A 2023 meta-analysis in Obesity Reviews demonstrated that L-carnitine supplementation contributed to significant additional weight loss compared to placebo, with an average reduction of 1.3 kg (2.86 lbs) over 12 weeks

Sources: Conlon MA, Tomas FM, Owens PC, et al
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