Be mindful of any medications you take
Any drugs you take may also play a role in your running-related GI issues. Over-the-counter anti-inflammatory meds to relieve muscle or joint discomfort are often prime offenders. Marketed as aspirin, ibuprofen and naproxen, they commonly have side effects of stomach upset, diarrhea, and gas. Susan’s advice isto talk with your physician. Discuss all medications you take, to include the above meds for pain. Ask if taking an anti-diarrheal medication before running might be of help. Do not take any medications he/she is not in support of.