What are the benefits we get from zometa and what are the side effect? i'm a her2 breast cancer stage 3 patient

Controversial: I personally think there is a benefit based on the trials. Specifically in post-menopausal women. Not only treating or preventing osteoporosis but also preventing breast cancer recurrence. But i think the final answer is still unknown. The side effects are few but one which is rare can be problematic, osteonecrosis of the jaw.

Bisphosphonates: Are used to treat and prevent bone metastasis. They have adverse effects and costs. They are indicated once established, and to the best of my knowledge are being studied in early stage prior to relapse to establish benefit over risk. I would not advise a relative to use it; i'd discuss with your medical oncologist that has given you chemo and herceptin (trastuzumab).