l carnitine workout benefits The Amino Company L-carnitine benefits, uses & dosage:

While some changes may be noticeable within a few weeks, more significant results usually require consistent use over a longer period

That's lipolysis

Ries, S, Zolfaghari, EJ, Higaki, AA, Olivera, JA, Cangut, B, Ahmed, A, Hsiung, T, Carducci, J, Chidi, A, Elshiekh, M, Degife, E, Arrington, R, Jindani, R, Perkins, AA, Rodriguez, E, Eisenberg, M, Servais, E, Woodard, GA, Antonoff, MB

Antioxidant action of Carnitine: Molecular mechanisms and practical applications

The good news is that most sleep-related issues resolve as treatment continues, and many patients ultimately sleep better due to reduced sleep apnea and nighttime reflux as weight decreases