So I have a problem with phlegm after I smoke meth (no redose, just one long sesh huffing a point or less and that's it). I brush my teeth straight after, drink heaps of water and all that.. but for some reason, after about 2 hours I get this thick phlegm buildup at the back of my throat, right where my gag reflex is located. Meaning if I don't cough it up forcefully and regularly, then I start gagging and dry heaving (never thrown up but close!). Once I get that gunk out its fine - it takes ages though I mean hours of constant thick phlegm building up. But if I am entranced by some porn scene or something for like all day, I'd suddenly gag like fuck and have to hug the toilet bowl and cough like Walter White season 1. So what can I do about this?? Should I try and get some sort of expectorant or equivalent from the chemist to break this shit down and make my weekends a bit more enjoyable? It happens about every time now and it's really annoying. Gagging and coughing really hurts my high.