I need my co codamol on drink free nights to relax as can't deprive myself totally so is this ok?

Troubling: Your question suggests many red flags for dependency. You categorize your evenings as "drink free" or, I suppose, "drink ok" nights! And then you say you must have a narcotic (co-codamol is paracetamol and codeine, a narcotic) on the other nights. It's not ok ... confront the fact that this is a dependency problem and investigate ways to get help. We care..write back and let us know how it goes