Good luck in beating this. Though I don't have practical advice on herbal/natural remedies that may help to offer. I can say you have my prayers and moral support. What does your GP advise in the way of weaning off painkillers out of interest? I am currently on painkillers myself but I don't want to be...I am keen to get off prescription meds ASAP. It's pretty bad when the medication to take for the purpose of healing ends up making you sicker. Once again, good luck. I look forward to you fully overcoming the hurdle that you face. All the best.