Dreamsmoke

Little has been revealed of Dreamsmoke, other than that it is smoked (as the name suggests) and that smoke leaves a pungent scent behind afterwards.

Based on contextual clues, Dreamsmoke is probably a name for a strain of marijuana, and, given the nature of the world in which it exists, likely a magically enhanced one.

Hemaflexin

Hemaflexin is medical treatment that improves the solubility of blood gasses by manipulating the effectiveness of red blood cells.

A quick-acting drug, the effects of Hemaflexin are felt within two minutes of application. Among other uses, it is good for reducing the effects of the bends (decompression sickness).