When people are sick with a stomach bug, food poisoning or any other illness, there can be a lot of fluid lost in the body. The body is comprised 60% of water. Therefore, when we lose fluids, whether it’s through vomiting, excessive sweating or diarrhea, its critical to replace those fluids to maintain necessary bodily functions. Receiving an IV with medications is more effective, especially when sick. Taking oral medications or drinking water when sick usually results in throwing them up or continued diarrhea. Getting medications, vitamins and fluids IV bypasses the GI system and allows you to get the relief that you need.