One strategy I found to work well for both fat loss and performance is to take 2-3 doses of acetyl L-carnitine with other fat-burning ingredients without food between meals, and to take 1 dose of L-carnitine or L-carnitine L-tartrate with a post-workout meal
There should be no visible particulates, fibers, or floaters
doi:10.1081/DMR-120000652 Korkmaz GG, Uzun H, Cakatay U, Aydin S (2012) Melatonin ameliorates oxidative damage in hyperglycemia-induced liver injury
doi:10.1089/THY.2006.16.455 8
However, cysteine residues of peroxiredoxins are easily hyperoxidized to cysteine sulfinic acid, resulting in the inactivation of peroxidase activity
Most don't include BioPerine for increased bioavailability and faster results