I had a lumpectomy 3 years ago followed by radiotherapy and a five year plan to take anastrozole with 6 zometa bone infusions over a 3 year period. After taking anastrozole for just over a year I started to suffer from joint pain, struggled to get out of bed in the morning, no longer fit enough to go for a decent walk without aching joints.
I was extremely naive and didn't put 2and 2 together. I had numerous visits to the doctor, a few xrays and eventually a bone scan to check whether I had developed bone cancer - luckily I hadn't. The results of the xrays were that I had developed osteoarthritis in the right wrist and left hip and there was "degeneration" in my lower back. I haven't had my knees or shoulders/neck xrayed, but I get pain there so I must assume this is related.
I eventually decided to do a bit of investigation myself and found the feedback about side effects of anastrozole. So after being on the drug for a little over 2 years, I decided to stop it to see if I would improve. I subsequently had an appointment with my oncology specialist nurse who agreed I should come off anastrozole for 6 months to see if there was an improvement in my condition. She said there might be an alternative drug after the 6 months though it was unlikely to be offered to me as I had been on anastrozole for over 2 years.
After 6 months there was a slight improvement in my condition - still full of aches and pains and unable to resume walking any distance, but I am able to get out of bed without being in agony. If I sit for a while I'm like an old lady getting up and moving around till it all loosens up. (I'm 66 and, although not a spring chicken, I didn't expect to be so unfit at this age.)
I decided that the relatively low reduction in risk of recurrence of that it offers for breast cancer is not worth further deterioration in my joints - I don't think the slight percentage it offers is worth it. I also think if I had known at the beginning how I would be now, I would have asked for an alternative drug - or even just stopped the anastrozole after a year. I do wonder if the NHS take on board how this drug can effect people and whether it's worth the relatively low reduction in risk.