Buscopan Cramps contains the active ingredient hyoscine butylbromide, which has an anti-spasmodic action that relaxes the muscles causing the spasm in the digestive tract to ease pain and discomfort of stomach cramps. Unlike painkillers which mask the pain, Buscopan Cramps works directly on the cause of pain - the spasm in the gut - to provide effective relief. By the way Buscopan works, it may also treat any symptoms related to IBS however the dose and applicable age groups vary as listed on the product literature.Before taking Buscopan, please read the following information:Contact your doctor if your symptoms do not improve after 2 weeks.Some people may experience blurred vision whilst using this medication, if this occurs, wait until your vision returns to normal before driving or operating machinery.Do NOT take Buscopan if:You are allergic to any of its ingredients including sugars e.g. sucroseYou have glaucomaYou have megacolon (enlarged bowel)You have myasthenia gravis (rare muscle weakness problem)You are pregnant, likely to become pregnant or breastfeedingYou are on other medication without speaking to a doctor or pharmacist firstIt is for cramps in a child aged under 6It is for IBS in a child aged under 12Take SPECIALCARE with Buscopan if:You are over 40You have recently passed blood from the bowelYou have severe constipation or are feeling sick/vomitingYou look pale and tiredYou have difficulty/pain passing urineYou have a feverYou are experiencing abnormal vaginal discharge or bleedingYou have a very fast heart rate or other heart problemsYou have lost your appetite or lost weightGenerally symptoms of cramps and IBS have triggers and people are aware of them so they can avoid those certain types of foods and other factors involved. These may include:StressEating and drinking habitsFood allergies or intolerancesStimulants e.g. coffeeHormonal factors