B vitamins, especially B1, B6, and B12
https://juliet-wiki.win/index.php/Random_Stabbing_Pains_in_the_Stomach:_Nerve_Irritation,_Gas,_or_Something_Else%3F
B vitamins, especially B1, B6, and B12, are essential for nerve signaling and myelin; ensure adequate intake through diet or supplements.