Can This Pill Cause Muscles To Hurt In Your Legs

Can this pill cause muscles to hurt in your legs ? I have been dealing with siatica and it was some what better but the last month or so it acts like it is really bad but it is also on the other leg now so was just thinking maybe it was the fosomax. I just started the 3 rd month. My muscles really feel week when I climb stairs we have 3 steps going into the house and that is when it hurts most. It is mostly in the center of my butt on both sides.