Propel powder is not just an electrolyte it also has antioxidant vitamins C&E and B vitamins. You can take this anytime, but it would be great to take on active days or when you go to the gym. I love how tasty these are, even though there's zero sugar. One packet mixes instantly and smoothly into a standard water bottle with no gritty texture. These are so good for on the go, I keep one in my purse all the time. I love how these keep you so hydrated, and you also get your vitamins. The Raspberry Lemonade is one of my favorite flavors. It's not too sweet, and it's very refreshing.