If he was abusing them, he was probably also snorting them, which is like a poor mans blow, been there done that many times. I switched to Adderal a long time ago cuz that shit is the most vile thing to snort. Just gross blueness everywhere, including blue shits for a couple days after a bender. No thanks. I still take about twice the prescribed daily dose, but haven't snorted them in years and never would again. Shit is rough.