No, in terms of effectiveness, Drotaverine has been considerably better than Mebeverine in reducing pain, frequency, and symptoms in severe cases of IBS. Drotaverine is commonly known with brand names such as Aveine-40, Averine- R or Drot. Colofac, IBS Colofac and Aurobeverine are the brand names for mebeverine. Mebeverine is available in combination with ispaghula husk (fybogel Mebeverine brand name), while Drotaverine is made of 40 mg Drotaverine Hydrochloride.