This notion is speculative at present, as no change in cognition was observed in one small RCT of exenatide in schizophrenia 140 , while a positive cognitive effect of liraglutide was only seen in an even smaller non-randomized open-label investigation of people with either depressive or bipolar disorders 178,179
Long-term oral supplement use, however, may cause cramping or bloating and could lower zinc levels
Ann N Y Acad Sci 1033:30-41 (2004) The pharmacokinetics of L-carnitine and its metabolites were investigated in 7 healthy subjects following the oral administration of 0, 0.5, 1, and 2 g 3 times a day for 7 days
Neuroscience and Behavioral Physiology, 38(9), 953957
But, as Dr Wedgeworth says, its just not worth the risk