Answer:
Stimulants are the correct answer.
Explanation:
Stimulants or the psychostimulants are the substance or chemical that raise the activity of the nervous system especially CNS and the body.
These stimulants are the drugs that have a pleasurable and sympathetic effect such as tonics or energizer. These stimulants help in ADHD. Cocaine, meth, and others also use as stimulants for several cases.
Thus, the correct answer is - stimulants.
