i am among the individuals who took Reclast who had a severe reaction (specifically an anaphylactic reaction). i believe that i was likely allergic to one of the inactive ingredient. My allergist/immunologist researched cases of Reclast anaphylactic reaction and told me he found very few. I very much wish that i had been given the Brandname Reclast my allergist said needed to be prescribed for me instead of a generic. The first time i took reclast, it was brand name and it literally reversed my osteoporosis. The second time with the reclast generic, there was also significant improvement. Its unfortunate i had a reaction and its known that i’ve had repeated reactions to various preservatives