Buscopan­ IBS Relief relieves abdominal cramps which cause pain and discomfort in irritable bowel syndrome (IBS). It works by an antispasmodic effect, relaxing the cramping muscle of your bowel. Dosage: Only take Buscopan IBS Relief if your doctor has diagnosed that you have Irritable Bowel Syndrome. You must consult your doctor if you are over 40 years old and it is some time since your last attack of IBS or the symptoms are different this time. For adults and children 12 years or over only: Start by taking one tablet 3 times a day. If more relief is needed, you can increase your dose to a maximum of two tablets 4 times a day. Swallow the tablet whole with water. Do not chew it.