I've been using Copaiba essential oil for pain from my axillary scar. I was told by the Dr to take 8 panadol across the day to keep a lid on it as was feeling a 7/10 pain at the end of the day. Plus I couldn't keep taking codeine or endone/temgesic or I could hardly get up plus constipation. After a few days the copaiba kicked in. I was using two drops under my tongue day and night. I was very sceptical but I haven't needed a painkiller in months. Now I have had to stop the copaiba as rad onc said not to use during rad. I understand why. However it is now day 8 of rad and I need the panadol again. Copaiba is a 'cousin' of CBD oil and I order it from USA as I'm into essential oils...but the company I do my orders through has had so many requests based on a broad spectrum of positive results in different areas that we can only purchase 1 x 15ml bottle a month! It may not work for everyone, I was just interested that it did for me and then my pain returned on stopping it.