Is it okay to mix codeine cough syrup and monster energy drink?

A/W Dr. Wartenberg. Codeine is a drug. Caffeine is basically a drug. Why would you ever want to mix these two substances???? The monster drink is full of sugar & caffeine. .
No. It isn't ok to mix prescription medications with anything without talking to the prescribing physician or your pharmacist. Monster energy drink has a large amount of caffeine, as well as umpteen other ingredients of uncertain safety and use, and has been associated with a number of deaths from people overusing them, or having underlying cardiac issues.