I am wondering what herbal medications should i use for ibs?

Fiber: If you want to waste your money on herbal ibs treatments, try to pick some with a lot of fiber. Many herbs are drugs with little if any data to support their use, no fda oversight, no monitoring of side effects, no standardization and are sold to unsuspecting folks at huge mark-ups. You should see the profit margins on things like juice plus--i'd be ashamed to sell herbs in my office.