I too, had quite a time with my first Reclast infusion with dizziness, balance problems and odd muscle cramping in various parts of my body. It took about a month for it to work itself out. I've just finished the end of my 3rd year. Had 3 infusions all together and had no problem at all with the 2nd and 3rd. Hopefully your dizziness will abate as mine did. Take care.