@service1010
I never had any side effects From Fosamax. Be aware, however, that there are some pretty rigid rules you have to follow When taking it. The good thing is, he only have to take it once a week.

You should take it first thing in the morning. After taking the pill, you need to either stand or sit up very straight so that it doesn’t burn your esophagus. I would get in bed and just sit up really tall, Never had any issues.

I also have to take Prilosec first thing in the morning. Had to take Fosamax first, Which meant getting up half an hour early so I could do one followed by the other.