Firstly, water is the best hydration fluid to consume on a daily basis, as part of a healthy, well-balanced diet. However, if you experience dehydration there are many rehydration drinks available. Oral rehydration solutions (such as Hydralyte) are clinically formulated to contain the correct balance of fluid and electrolytes. This allows for faster and more effective absorption of fluid and electrolytes by the body, and as a result, dehydration can be corrected very quickly.