5-HTP shows potential sleep benefits
Meloni M, Figorilli M, Carta M, Tamburrino L, Cannas A, et al. Preliminary finding of a randomized, double-blind, placebo-controlled, crossover study to evaluate the safety and efficacy of 5-hydroxytryptophan on REM sleep behavior disorder in Parkinson's disease. Sleep Breath. 2022;26:1023. doi:10.1007/s11325-021-02417-w
Potential benefit of 5-HTP
Meloni M, Puligheddu M, Sanna F, Cannas A, Farris R, et al. Efficacy and safety of 5-Hydroxytryptophan on levodopa-induced motor complications in Parkinson's disease: A preliminary finding. J Neurol Sci. 2020;415:116869. doi:10.1016/j.jns.2020.116869
5-HTP shows promise for depression
Meloni M, Puligheddu M, Carta M, Cannas A, Figorilli M, et al. Efficacy and safety of 5-hydroxytryptophan on depression and apathy in Parkinson's disease: a preliminary finding. Eur J Neurol. 2020;27:779. doi:10.1111/ene.14179