I had a similar experience. I stated alendronate about 3 years ago. I stopped it about a year ago due to terrible heartburn. My doctor wanted me to take the yearly infusion because “you only have side effects once a year”. My father had a horrible reaction to it that landed him in the hospital for a week. I refused that. I started monthly risedronate nine months ago instead. It wasn’t bad for awhile. I got sick 3 months ago… not sure if it was related. 2 months ago, the day after taking it I woke with weakness, body aches, headache, dizziness that turned into chills, fever, nausea and vomiting. I assumed I had stomach flu because my husband had it a week earlier. Last month, the day after taking it I woke to weakness, headache, stomach cramps, chills, fever, weakness, nausea, dizziness, vomiting and severe body aches. I could hear my pulse pounding in my head. Mucus was running from my nose. I thought I was unlucky and got stomach flu again. I’m not sure what made me realize these symptoms came the morning after taking this med, but I had a hunch and looked up the side effects. I was experiencing 16 of them.
I’m not suggesting anyone should follow what I am doing, but I will not take it again. I will not chance taking an injection or infusion that cannot be taken back if I react to it.
I will take my chances with dietary changes and exercise.