Yassine J, Semenza GL, Collins L. NVTIA™ 5-HTP–L-Theanine–GABA Sleep Rhythm Support System: Ratio Optimization, Gastrointestinal Tolerability, and Evidence from Human Studies and Preclinical Evaluation. IJAFSR. 2026;4(1):53-60. doi:10.62051/ijafsr.v4n1.04