The spelling of the words "codeine sanguisuga" can be explained with the help of IPA phonetic transcription. Codeine is pronounced as /ˈkoʊdiːn/ and refers to a highly addictive painkiller. Sanguisuga, on the other hand, is pronounced as /ˌsæŋɡwɪˈsuːɡə/ and means "leech" - a bloodsucking worm-like creature. The combination of these two words might be used to describe the negative effects of codeine addiction, which can drain an individual's health and vitality, just like a leech sucking the blood.
Codeine phosphate, in white granular soluble crystals; dose, gr. 1/2-2 (0.03-0.13).
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.