Human Growth Hormone (HGH)
source: https://esfstream.com/human-growth-hormone/
HGH is produced naturally in the body by the pituitary gland and functions as a growth stimulant for muscle mass.
source: https://www.fitneass.com/hgh-human-growth-hormone/
Originally used to treat certain diseases, with the availability of synthetic HGH, it is widely used by bodybuilders as it mimics the effects of anabolic steroids. It is readily purchasable through more illicit means but brings with its usage side effects like joint pain, muscle weakness or even carpal tunnel syndrome.
Diuretics
source: https://www.discountsupplements.ie/pharmafreak-ripped-freak-diuretic-48-caps-model-pharmafreak
Diuretics are drugs which affect kidney function and increase urine output. In medical use, certain condition patients are given diuretics to bring high blood pressure and fluid retention under control.
source: https://homegymr.com/how-to-become-more-vascular/
When abused, diuretics are instead used by bodybuilders and athletes to dilute their urine in lowering steroid concentration in order to fool doping tests. In reaching a lean and vascular physique, diuretics also allow bodybuilders to expel large quantity of fluids, dropping significant weight. The downside is the possibility of dehydration, dizziness or dangerously low blood pressure.
Steroids In The Fitness Industry 