Maciej Ficek, Wojciech Gawęda, Wiktoria Łobodzińska, Zuzanna Hamouta and Justyna Adamczyk 2025. L-CITRULLINE AS A NATURAL ERGOGENIC SUPPLEMENT: A COMPREHENSIVE LITERATURE REVIEW OF ITS EFFECTS IN NITROGEN METABOLISM AND HUMAN PERFORMANCE. International Journal of Innovative Technologies in Social Science. 2, 4(48) (Dec. 2025). DOI:https://doi.org/10.31435/ijitss.4(48).2025.4082.