l carnitine risks L-carnitine, batch-testing, and the problem with self-prescription in elite sport. Oral L-carnitine achieves bioavailability of just 14–18% of the administered dose. In a well-nourished elite athlete with no deficiency, the evidence for L-carnitine: Science-Backed Benefits, Risks, and

Browse the Peptides UK education library Dr Rimas Geiga Learn more about the clinics evidence-led approach to metabolism, ageing research and scientific health education

Impact of different types of diet on gut microbiota profiles and cancer prevention and treatment

Rhododendrol is reported to cause tyrosinase-dependent cytotoxicity to melanocytes, and RK might competitively bind, exerting cytotoxicity through tyrosinase-catalyzed oxidation to cytotoxic o-quinones as RK-quinone and DBL-quinone

Nevertheless, larger, adequately powered randomized controlled trials are needed to confirm these findings and define optimal dosing strategies, timing of intervention, and patient subgroups most likely to benefit