I was diagnosed with breast cancer two years ago and given a Dexa scan as the medication I was put on ( Letrozole ) causes osteoporosis. They put me on biphosponates which had a terrible effect on my stomach as I've got hiatus hernia and bad acid reflux. I can't take medicine for that as I'm on levothyroxine for an underactive thyroid. I had my second scan a month ago and told I now have osteoporosis. They want me to have twice yearly IV infusion of zolendronic acid... I'm terrified of the possible side effects. My GP has shown little interest and only wanted to prescribe antidepressants which I refused. I know it's a load of problems but my main worry is the IV infusion, anyone got any advice they can share please?