Final answer:
Strychnine is one of the early types of stimulant drugs reported to be used by boxers and others. It increases alertness and performance, but has severe health risks and is now banned in sports.
Step-by-step explanation:
The early type of stimulant drug reported to be used by boxers and others was strychnine. Strychnine is a highly toxic substance that can increase alertness, reflexes, and overall physical performance. However, its use has severe health risks and is now banned in sports.
Learn more about Stimulant drugs