Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.
Anastrozole, sold under the brand name Arimidex, is a medication used in addition to other treatments for
breast cancer. Specifically it is used for hormone receptor-positive breast cancer.
As a side effect of Anastrozole, there is decreased bone mineral density (BMD).
Boniva is a trade name for
Ibandronic acid or Ibandronate sodium, which is a potent
bisphosphonate drug. Boniva is used in the prevention and treatment of
osteoporosis and metastasis-associated skeletal fractures in people with cancer.
In your case, if you have to continue Anastrozole medicine, then I recommend you to take some bone strengthening medicine (Boniva) like bisphosphonate.
Hope I have answered your query. Let me know if I can assist you further.