Silver Sulfadiazine and Strypic Powder in Hyposprays?

[Winklabom]

this is the key distinction. hyposprays put the chemicals in your bloodstream without triggering touch or ingest reactions

I think that ought to be considered a bug and promptly fixed. Hyposprays should work on either a TOUCH or an INGEST basis and not a magic tool that somehow circumvents the effects those would have on certain chemicals.