Why does cocaine constipate you?

Cocaine doesn't constipate you.. In fact it can often has the opposite effect and make you want the toilet.. Opiates constipate you, ie: Heroin, Morphine, Methadone..etc

However, if you are comming off of cocaine, then you may get constipation.. Cocaine is a stimulant, like speed(amphetamine), and caffine, they can make you need the toilet and some if not all are diuretic, meaning you will want to pass urine more often than normal. Additionally, stimulants like cocaine, methamphetamine, and even caffeine cause dehydration and dry mouth due to being diuretic amongst other things such as elevating heart beat, increase in body temperature..

Opiates will cause constipation in as little as one dose, Looking at the effects of cocaine on the body, It would seem if you abused a lot of cocaine and didn't replace your body fluids properly over a prolonged period of time then maybe there is a chance that you would become constipated. Cocaine is often cut with Manitol though which is a laxative..

So in short, if you have constipation and use cocaine, I would be looking for other reasons that you are constipated before you start blaming the cocaine.