Imodium (loperamide) usually starts to work within about 1 hour of taking it, helping to reduce diarrhea by slowing down intestinal movement and allowing more water to be absorbed from the stool
. Some effects may be noticeable within 20 to 30 minutes, but the peak effect is typically reached around 2.5 hours for the liquid form and up to 5 hours for capsules
. Once it begins working, Imodium's effects can last for 8 to 12 hours, providing relief from diarrhea symptoms during that time
. Most people find that symptoms improve within 1 to 2 days of treatment, but if diarrhea persists longer than 48 hours, it is advisable to consult a doctor
. In summary:
- Starts working: within 30 minutes to 1 hour
- Peak effect: 2.5 to 5 hours depending on formulation
- Duration of effect: 8 to 12 hours
- Symptom relief timeframe: usually within 1 to 2 days
Do not exceed the recommended dose and avoid using Imodium for more than 48 hours without medical advice to prevent serious side effects