What is the best over the counter pain reliever for PMS?

My gyn told me once to just try IB profin and it always worked great. Using a heating pad also saved me. Especially at night, the pad would help relieve the cramps enough to get to sleep. I never bought a heating pad though, if you are in a pinch just take a sock and fill it with rice. Tie the end off and microwave it for 2-3 minutes (depending on what heat level is good for you) I know it sounds silly but try it and you will be hooked too! It really works great and even has a little bit of moisture since you are using rice.