Distoside (Praziquantel) comes in tablet form, and each one contains 600mg of the active ingredient. The exact dosage will be calculated by your doctor based on the specific parasite responsible for the infection and your body weight. Usually, the dosage required for schistosoma haemotobium will differ to that required for opisthorchis viverrini and paragonimus westermani. Patients are generally instructed to take the tablet after eating, alongside a glass of water. Each tablet has three scores, so that it can be broken into smaller segments. This allows for precise adjustment of the dosage. If you have been instructed to take more than a single dose on the same day, your doctor will most likely instruct you to allow a 4 to 6 hour interval in between doses.