What is the orange color that can sometimes remain in my water bottle with an isotonic drink?

Good question! Because out of ignorance, you might think it’s a dye. But we don’t use dyes…. So indeed, strange. One of the substances that helps carbohydrates be absorbed faster (our isotonic is absorbed the fastest of all isotonic drinks) is beta-carotene. It is also found in carrots and is 100% a natural product. If you put spaghetti sauce in a jar, sometimes there is also an orange hue left behind, that is due to beta-carotene, the carrot. We use it as a carrier to speed up the absorption of our substances by the body, but it does leave a color. But it’s 100% natural, 100% harmless.