@carolgrandma I don't have any great answers, but I agree with @dannyandebbie - don't ever take Reclast again. The flu like symptoms happen to roughly a third of those who take Reclast on their first dose. They can be very unpleasant but usually are gone in a week or less. The big problem in my opinion is the unknown number of people who get hit like you have, with severe life altering symptoms of unknown duration. This problem may not affect a large percentage of those taking Reclast (no studies on how often these long term problems occur) but the severity of the symptoms and the lack of warning that this could occur is really disturbing.

I do not believe the doctors or drug companies know what is happening with these long-term affects of Reclast. And of course they often just deny them.

As to what to do now that this has happened, I would suggest you try multiple AI programs to get general information. That can describe a number of possible things that might be going on and though I know the AI programs I'm experimenting with have some significant errors at times, they can be useful if you don't take what they report as the gospel. Consulting AI will give no definite answers but it should give a useful broad picture that might help in talking with doctors.

I think the world of alternative/holistic medicine might have some possibilities, but I know of nothing definite. I would look there also if I were in your situation.

I also think the standard dose of Reclast is just too strong. See my post "Are we overdosing Reclast".

And finally others have suggested for prevention: hydrating beforehand, Tylenol or similar beforehand and after, anti-histamines beforehand and after and so on. As far as I know there is no clear evidence that these strategies work. After all two thirds of those getting Reclast don't have any significant symptoms anyway. If they do actually work for those acute flu like symptoms there is still no evidence that they prevent the long term side effects. I'm not arguing they don't work, just saying it's not at all clear that they do.

Also suggested is to request (and fight for) a longer (slower) infusion of 30-45 minutes or even longer.
There is evidence that the slow infusion can help prevent the kidney damage that Reclast can potentially cause. That one suggestion I would follow for sure if I ever felt invulnerable enough to try Reclast.

Good luck to you!