I have been taking Fosamax for about a year. I take the 70mg once weekly dose every Sunday morning. This past Sunday after my regular dose I noticed a pain in my lower right leg. Monday not only did my leg hurt but I had pain in my entire body from the neck down, chills, sweats, headache, stomach upset and my neck feels loose somehow and cracks like never before. It felt like I was coming down with a severe case of the Flu although I know now that I do not have the flu. It is Wednesday and I am still in pain, the chills have subsided somewhat today but the sweats have not. Previous to this I had been put on Boniva and experienced these same symptons after one dose and stopped immediately. I cannot stress how badly I feel. In between doses of Tylenol I feel terrible (8-10 500mg per day). I will now stop Fosamax and will never take another drug like this again. I just hope that this drug has not done permanent damage to my body or liver damage from all the tylenol. I too think the drug company has a lot to answer for.