megadose /ˈmɛɡəˌdəʊs/verb 2noun 1forms 3 verb2 •To dose (a patient) with a very large amount of a drug. •To dose with a very large amount of (a drug). noun1 •A dose of drug or vitamin far exceeding the normal or recommended amount, and usually given intentionally. Compare overdose.[F]rom biblical times [...] to modern times when men are served megadoses of vitamin E for breakfast, women too have been interested in the potency of popular potions. — 1987 formsmegadosed · megadosing · megadoses