Loperamide is the active ingredient in Imodium. We’ve seen earlier in the article that, this drug works by slowing down the bowel movement. You find Imodium in both caplet and liquid form. You have them both orally. In certain severe cases, you can consume them on a long-term basis. But, there’s a certain dosage you need to follow as per your age and weight. For instance, the recommended dosage for adults and children above 12 years is 4mg. However, this differs as per the weight. Therefore, it’s best to consult a doctor before you buy or try any of these medications.