Yeast Beta Glucan

My husband gave our 7 month old , soon to be 8 months, a beech nut baby food with beta glucan in it , and i’m a little nervous because i know he isn’t supposed to have it until he’s a bit more older , but my husband didn’t know. Do i make a doctors appt or just see what happens , he’s sleeping right now & seemed to be okay when i got home from work. Idk.