Thanks for the input, but I think you are confusing "maximum humanity" with "current humanity".

Maybe a little elaboration on that: This "immunosuppressant" stuff is mainly a gameplay mechanic. My players are chromed up to the fucking teeth. I'm talking from e.g. 60 max HUM down to 18 max HUM (42 max HUM loss). With all therapy in the world they would still only have 1 EMP which already leeds to severe effects, according to the core rulebook:

If your Empathy is...

[...]

▶ Equal to 1

Dissociative disorder, borderline cyberpsychosis,

Character exhibits strongly at least 3 traits from the

Hare Psychopathy checklist. Do your best to roleplay

accordingly.

The "Immunosuppressants" reduce the max HUM loss from the example above from 42 to 21. Max HUM is now 39. That's it. Players still have to take care of their mental health and get to therapy.