Hi Sarah
Yes they can do. In my experience, the effect of cocaine on my partner was not what it would be for a recreational user. He would take a gram, by himself using it all within a couple of hours, then drink copious amounts of alcohol to try and ‘bring him down’, then eat huge amounts of take away food and then pass out and sleep. For a ‘regular’ person cocaine would keep them awake for hours and you’d have little to no appetite. The addicts tolerance is different. Hope for your sake it’s not cocaine he’s using. X