Just imagine soldiers and ordinary people with implants to make steroids inside the muscles and painkillers dripped directly the bloodstream without all those icky syringes!
I'm imagining an entire populace government-healthcare-mandated to have these laser-controlled nanofactories that can, besides their publicized abilities, also produce mild or heavy tranquilizers, or other mind/mood-altering drugs.
People protesting? Flash a laser and they're not so interested any more...can't really remember what it was they were mad about. Violent mob? Flash, and they fall unconscious. Government/police wants to question someone? Flash, and they get a dose of sodium pentathol or other simi