Yeah. I remember hearing about the initial marketing of amphetamines, whereby “no side effects or addictive potential” were big selling points. Such seems to be true for most subsequent “uppers”.
“Popular Wakefulness Drug May Be Addictive
A drug used to increase alertness and boost mental acuity may be addictive, according to a study that undercuts the idea that modafinil is a safer alternative to Ritalin or amphetamines.