Effect of Iberogast (STW5) on tolerance to colonic gas in patients with irritable bowel syndrome: A randomized, double-blind, placebo control clinical trial.

Background: STW5 is an herbal medicinal product that, in previous studies, reduced abdominal pain in irritable bowel syndrome (IBS). The effect of STW5 on gas-related abdominal symptoms is unknown.

Aim: To determine the effects of STW5, compared to placebo, on the responses to colonic gas in IBS.

The effect of green kiwifruit on gas transit and tolerance in healthy humans.

Background: Green kiwifruit is a fiber-rich fruit that has been shown effective for treatment of constipation. However, fermentation of fibers by colonic bacteria may worsen commonly associated gas-related abdominal symptoms.

Aim: To determine the effect of green kiwifruit on transit and tolerance to intestinal gas in humans.