2014;9:e110076
Take-home message: - Peptides and assorted experimental drugs, like TB-500 and MK-677, are being recommended by fitness influencers to grow bigger muscles, lose fat, and recover from injuries faster - These drugs, many of which are claimed to boost levels of growth hormone, were studied in rodents and very small groups of human volunteers before being abandoned for not being beneficial or for causing unacceptable side effects - They are banned by the World Anti-Doping Agency and appear to be illegal in Canada and the United States, but can be purchased online
Proc Natl Acad Sci USA 102: 1877318784 Cullinan SB, Zhang D, Hannink M, Arvisais E, Kaufman RJ, Diehl JA (2003) Nrf2 is a direct PERK substrate and effector of PERKdependent cell survival
Levocarnitine side effects At oral doses of approximately 3,000 mg per day, levocarnitine can cause nausea, vomiting, abdominal cramps, and diarrhea