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I often get asked by athletes to explain the difference between HEED and FIZZ. The difference can be best explained by using the names of the products:

HEED: High Energy Electrolyte Drink.

FIZZ: An effervescent, fizzy, electrolyte supplement.

When trying the HEED, athletes tend to comment on its subtle flavour which is ideal for hour after hour of exercise. Naturally this is due to the lack of added sugars and no artificial sweeteners. FIZZ tends to have a slightly stronger flavour due to the stronger Endurolytes formula which leads to a stronger mineral taste. HEED and FIZZ are both available in a Lemon Lime flavour and it is this flavour which commonly leads to the question of what is the difference between the two products.

If you've been wondering the same thing, this article will be helpful to you!

So, HEED is a powdered sports drink that contains calories and a full-spectrum electrolyte profile. Endurolytes Fizz is a nearly calorie- free, full-spectrum electrolyte replenishment product in effervescent tablet form.

Every scoop of HEED contains 100 calories and about the same amount of electrolytes as one-half tablet of Endurolytes Fizz. While taking into account the many variables that determine how much electrolytic mineral support you need, our general recommendation is one-half tablet of Endurolytes Fizz for every 22-27 kilograms of body weight per hour. Using that gauge, lighter-weight athletes will often find that one to two scoops of HEED in a water bottle will cover their entire fueling requirements - fluids, calories and electrolytes - for an hour or so. The same is true for most athletes who are doing short-duration workouts and require only minimal amounts of calories and electrolytes.

During longer bouts of exercise, when Sustained Energy or Perpetuem is the primary fuel (and especially when concentrated, multi-hour bottles of either product are being used), Endurolytes FIZZ is an ideal alternative to Endurolytes Extreme capsules, primarily for athletes who are either unable to swallow capsules during exercise, or who prefer to fulfil their electrolytic mineral needs via lightly flavoured, effervescent electrolyte water. The FIZZ is best used in its own water container and not added to Perpetuem or Sustained Energy.

A key point to remember is that if you put "X" amount of scoops of HEED or "X" number of Endurolytes FIZZ in your water bottle, you have preset the amount of calories and more importantly, electrolytes you will consume. This can become an issue if what you've put in your bottle is proving to be insufficient (such as if the weather gets hotter). Therefore, we highly recommend that you carry extra Endurolytes FIZZ tablets or Endurolytes Extreme capsules. You may end up not needing them, but you'll feel better knowing that you have them within easy reach, should the conditions require more electrolytic mineral support than what you're obtaining from however many scoops of HEED or Endurolytes FIZZ tablets you've put in your bottle. You may also end up being the hero to another athlete who is suffering from cramps!!!

Lastly, you can most definitely add Endurolytes FIZZ tablets to your bottle(s) of HEED to bolster the electrolyte content. If you're adventurous, you can create a new flavour by, for example, adding Grape Endurolytes FIZZ to Strawberry HEED, or numerous other creative combinations.


HEED = Calories + electrolytes
Endurolytes FIZZ = Electrolytes only

Now you know the differences between these two great fuels! 

Neil's Tip: Add a Mango FIZZ to a scoop of Lemon Lime HEED for a Bubble Gum flavour!!!