Slang term for serious users of
DXM, or Dextromethorphan - a dissociative
drug. Dextronauts are those who go above and beyond trip dosages or prolong them for periods of time in order to have intrinsic, ethereal experiences. They are well versed in the toxicology of the substances ingested and also clearly understand any possible side effects and outcomes.
David
soon begin experimenting with higher doses, discovering ego
death and adopting shamanistic beliefs to further his
purpose. He had become a dextronaut.