Maybe Reiki (Smart one or the free Reiki Field)?
It is a gentle field.
Also, there’s Cell Rejuvenation (if I remember the name correctly), always helped me when I felt sick.
Detox fields… But Idk if they won’t have strong effects though.
I Wish You The Fastest Healing, Brother. 
Also, The Advanced Healer would be Great, if you got it.