Hyopan Syrup is an antispasmodic medication available in a 100ml liquid formulation. It is used to treat muscle spasms and cramps in the stomach, intestines, and bladder. The syrup contains hyoscine butyl bromide as its active ingredient. This medication should be used under medical supervision. It may be contraindicated in patients with glaucoma, myasthenia gravis, enlarged prostate, or bowel obstruction. Common side effects may include dry mouth, constipation, and blurred vision. The typical adult dose is 20mg taken 3-4 times daily. For children 6-12 years old, the usual dose is 10mg three times daily. Store at room temperature between 20-25°C and keep out of reach of children.