cla and l carnitine stack Effective Combination for Fat Burning: L-Carnitine DJSS BLACK SERIES CLA +

But, there are some downsides: They need regular shots, which might not fit everyones lifestyle

Lipoxygenase converts free PUFA into lipid oxides, which significantly affects iron redox reactions (Yang et al., 2016)

Intravenous administration of L-carnitine might prove more effective, however where kidney function is not impaired, as more than 95% of L-carnitine filtered by glomeruli is retained and excess exogenous L-carnitine is readily excreted once the active transporters are saturated

Buxton OM, Pavlova M, Reid EW, Wang W, Simonson DC, Adler GK (2010) Sleep restriction for 1 week reduces insulin sensitivity in healthy men

Opinions are all mine and are based on a trial.