Mutable Drugs - As a fictional type of glycerin, Mutable Drugs have been discovered to make the person who comes into contact with them mysteriously healthier over time. An opaque-white bubbly substance that slithers on the human skin like a diffusing snake was altered with microneedles encapsulating drugs and vaccines. The intensity of the reaction depends on the treatment process. Amongst other uses, it can potentially deliver a new form of long-term contraception, and its residues on the skin appear to have a probiotic effect.