@255anny I make a distinction between the "acute phase reaction," which is common and involves flu-like symptoms and low grade fever (similar in my case to my reactions to a vaccine).

For me the term "side effects" refers to longer term effects and though some post on this forum about terrible side effects (pain mainly) most people I know don't have any with Reclast.

You may not need tylenol at all. Take it you have fever and are uncomfortable but the acute phase reaction will also go away without tyelenol. I took 325mg twice the next day.

It sounds like that 650mg you take 4-5 times a week might not be a good idea but your doctor and pharmacist could discuss this with you. Maybe there are other factors!

Good luck tomorrow. Relax and enjoy an hour without anything to do and bring a book!