Hyoscyamine
"I've been using this medication for almost 5 years. I can't believe that this isn't prescribed more often than it is because it WORKS! I had such pain with the spasms and mucus till I started using this.  I do have to drink a lot more water because it makes me thirsty and it can complicate constipation.  However, my doctor allows me to take it on the onset of an episode instead of 3 or 4 times a day.  I've been able to gain weight and my energy has increased since using this medication. I really am happy with this medication and feel it has allowed me to live a much more normal life, almost pain free.  Of course, I've changed my diet and stay away from triggers too!  Good luck and I hope you have the results I've had."