Amazonkaaa! is a Russian manufactured mutagen laced energy drink that alters human physiology, mostly women. Abuse or overdose of this energy drink can cause irreversible physical changes in people.
Amazonkaaa! can cause in addition to providing lots of energy, increase physical size, muscle mass, cause growth despite fusing of bone plates, and increased libido. Among side effects are futanarification, aggression, and psychological changes.
In the era of corporate espionage, it has been reverse-engineered and found to contain trace amounts of Alpha the experimental compound under research and development of Good Corp. Alpha's original formula and the head scientist working on it had disappeared under mysterious circumstances a few years back. Since then several knockoffs and versions of Alpha have been out in the black market as a physical enhancement drug. Alpha happens to be the base drug to the Tahsin enhancement treatment developed by GoodCorp.
Information about Tahsin:
https://www.deviantart.com/gsendr1/art/Successful-Drug-Trial-Report-1a-869285951
https://www.deviantart.com/gsendr1/art/Successful-Drug-Trial-Report-1b-869285933