I too had this Reclast infusion and my first day went like any other. However, from the second day and for the past seven months I have experienced pain in my shoulders, arms, right hand and my left foot. The more I use them the worse they hurt and the pain never seems to go away completely. I did have flu like symptoms and the nausea feeling seems to come and go. I shared this with my endocrinologist and he expressed that the feelings I am experiencing are not from the Reclast and that I should see my rheumatologist. I saw my rheumatologist and they say that there is nothing they can see and therefore nothing they can treat. I have been told that they want to do another infusion next July and my endocrinologist says that he will try something different; not sure if I even want to go to their office. I understand that my endocrinologist is there to treat bone density not pain management. Nonetheless, I feel they need to be a bit more honest about the side effects from these infusions and then let the patient make their own decisions. Unless they are getting some kind of kick back or recognition for the amount of that stuff they use! Hope you are feeling better and hope the symptoms do not stay with you like they are me! I have found Physical Therapy has helped some but never does all the symptoms go away completely!