Cocaine is cardiotoxic by itself and can cause a heart arrhythmia. Adding alcohol creates a different substance called cocaethyline which can also make you sick. I had a friend who always needed to drink vodka when smoking crack and I did this as well with beer. I was a hardcore alcoholic who never had hangovers but when using cocaine, it was guaranteed I would feel like crap the next morning. You're going to get different opinions on this but Jimmy wasn't kidding when he said complications can occur. There are many threads here speaking about this combination but here are a few:
You need to know when using cocaine with antidepressants, it can put you at higher risk for seizures and serotonin syndrome. We're not trying to scare people but help you to make a smart decision to keep you safe.