How much cocaine is required to OD?

I’m trying to figure out how much cocaine is required to overdose. According to everything I’ve read, there is no lethal dose. It’s all dependent on the user. A small amount can cause heart attack or stroke for some while no issues for others. It seems to be all about cholesterol and blood lipid levels as well as pre existing conditions. <br><br>I’ve had issues in the past but stopped using for a couple years and I think I’m gonna start up again. I’m curious as to how much I can use in one “sesh” and how often I can do those sessions. Is there a standard rule of thumb?