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A well documented side effect of the ADHD medicine Adderall (often referred to as Addy), where the user experiences significant loss of appetite. Symptoms can include nausea, weight loss, and dehydration, and are often accompanied by a complete lack of desire for food of any kind.
Adam: "Hey man! Did you hear I beat addyrexia?"
Isaac: "Nah bro, what happened?"
Adam: "I railed 6 addy's yesterday and still ate 3 square meals!"

Conor: "I'm so hungry but I can't eat because I've been all tweaked out on adderall for the past 3 nights."
Ryan : "Shit, I'm so sorry man, I had no idea you were struggling with addyrexia. "
by Flownadz December 18, 2014
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