Is L-carnitine effective? Tell me about the used ones! ! Ask god for help

I lost weight after using it for one month 10 kg. . . The seller said there were no adverse reactions. . . But I think sometimes my heart beats faster, but it's within the normal range. . . Dry mouth. . . Have a bad appetite. . . Creatine. . . Consumption during exercise is greater than before, mainly due to sweating more than before. . . However, I feel that my appetite is not bad these two days, but I eat less than before. . . My mouth is still a little dry. . . The muscles are not sore. . . There's no abnormality in the heartbeat. . . Real experience ...............................................................................................................................................................................