My hubby and I jokingly call my T 'man juice'. Especially since he administers it to me in my gluteus, so we get to make all sorts of jokes around that.

Other names I have heard for T specifically: Mr. T, flavor injections, super serum, birdshot (for subdermal pellet form of T), the bimonthly stabbing, man-phetamines, love drug, vitamin T, gender fluid

There are probably some I am forgetting, but these are the ones off the top of my head.

Immanization seems like a fun one off the top of my head. Like immunization?

Probiotics are a thing too, so I guess proboyotics can be, too :)