Hi John
I started on tablet bisphosphonates over two years ago and then went onto infusions of zometa.  I have had no side effects from them.  The only problem is, if you need invasive dental treatment, which I did, you have to have zometa knocked off for two month before and two months afterwards.  This is to prevent getting the disease in your jaw bone, which is a possible side effect.
All good wishes.
Mavis