Pain Meds and itchy

[Lyn]

I saw my onc yesterday and of course my main concern was pain from my shoulders and neck not related to BC. My onc gave me a combinaiton of Endone 5mg (oxycodone hydrochloride tablets) and OxyContin tablets 10mg (also Oxycodone hydrochloride tablet) he converted the amounts back into morphine doses. The OxyContin lasts about 12 hours and the Endone 3-4. Problem is that Oxycontin only takes about 20 minutes to work and the Endone 40 minutes and just makes it to 3-4 hours before pain sets in. I have noticed that I am feeling itchy since starting this combo but I don't seem to be alergic to any drugs, so asking if anyone has alergy to pain relief and should I start taking the Endone 40 mins before dose and if so why isn't it explained to take every 2 hours 20 mins or does that make it look bad on paper. I have been adding an anti-histamine as well. So still trying to work out pain meds without becoming an addict, at least I am pain free at the moment.

Love & Hugs Lyn