Niacin is otherwise known as vitamin B3 and in an antioxidant. Research studies have shown that niacin supplementation increases growth hormones in response to anaerobic exercise (64) as well as a reduction in fasting triglycerides (65). An increase in fasting insulin has been found due to a decrease in insulin sensitivity (66). Further research is needed for this supplement in order to understand the mechanisms.
64 – Stokes, K. A., Tyler, C., & Gilbert, K. L. (2008). The growth hormone response to repeated bouts of sprint exercise with and without suppression of lipolysis in men. Journal of Applied Physiology, 104(3), 724-728.
65 – Plaisance, E. P., Mestek, M. L., Mahurin, A. J., Taylor, J. K., Moncada-Jimenez, J., & Grandjean, P. W. (2008). Postprandial triglyceride responses to aerobic exercise and extended-release niacin. The American journal of clinical nutrition, 88(1), 30-37.
66 – Vega, G. L., Cater, N. B., Meguro, S., & Grundy, S. M. (2005). Influence of extended-release nicotinic acid on nonesterified fatty acid flux in the metabolic syndrome with atherogenic dyslipidemia. The American journal of cardiology, 95(11), 1309-1313.