l-carnitine effectiveness The bright and the dark sides of supplementation: a systematic review | Journal of the International Society of Sports Nutrition Know Your Nutrients: L-Carnitine -

Levine ME, Lu AT, Quach A, Chen BH, Assimes TL, Bandinelli S, et al

doi:10.1186/1472-6815-11-1

Its relatively low molecular weight of approximately 161.20 g/mol distinguishes it from peptide-based research compounds

[DOI] [PubMed] [Google Scholar] 181.Khashan AS, Henriksen TB, Mortensen PB, McNamee R, McCarthy FP, Pedersen MG, Kenny LC

Caffeine in connection with taurine provides better stimulation of central nervous system

Possible side effects include: Mild nausea or stomach discomfort Headache or restlessness Muscle cramps A slight fish-like odor (in rare cases) Individuals who are pregnant, nursing, or have thyroid or kidney conditions should consult a healthcare professional before starting supplementation