A nutritional supplement is a food or drink designed to meet basic dietary requirements.

The food processors of the Ocampa city dispense nutritional supplements every 4.1 hours. (VOY: "Caretaker")

Starfleet emergency rations are composed of concentrated vitamin-enriched nutritional supplements. (VOY: "Innocence")

Seven of Nine's diet consisted almost entirely of nutritional supplements, as she thought that most foods were an "indulgence". These included nutritional supplements 14-beta-7 and 13-alpha. (VOY: "The Omega Directive", "One", "Body and Soul") When her cortical node began to malfunction in 2377, Seven created nutritional supplements composed of metabolic enzymes and protein extract in the hopes of compensating. (VOY: "Imperfection") Later that year, she replicated some nutritional supplements for Fantome, of a species native to the Void. (VOY: "The Void")

Icheb also preferred to eat nutritional supplements. (VOY: "Nightingale")