My doc wants me to have an infusion of Reclast - I have osteoprosis, low serum D (23) (probably due to Crohn s), MS, Mast Cell Activation Disese (MCAD) & Mulitple Chemical Sensitivities (MCS), bilateral aortic blockages, and I m hypothyroid. Thyroid issues and mal-absorption issues were listed aming the warnings for Reclast, both (I think) in relation to concerns about jaw necrosis. I m concerned that Reclast may cause more problems than I m already dealing with. Although I seen warnings of side effects, I can t find how likely they are or whether I m at higher risk. While I no longer have frequent episodes of anaphylaxis, since I m taking Cromolyn Oral Solution for the MCAD, I do still experience allergic reactions.