I’ve been testing the newest tablets, an orange flavor called Rival that is sweetened with stevia, a plant-based sugar substitute which has a negligible effect on blood glucose. There’s a slight aftertaste – the website advertises a “clean finish with no aftertaste”, but I disagree - but it generally tastes like your typical orange-flavored energy drinks. Each tablet has 7 calories, and provides 300mg sodium, 100mg potassium, and 150mg Vitamin C as well as an extract of Rhodiola rosea , an herbal supplement that is believed to reduce fatigue and improve mental alertness.
One confusing aspect of this product is that the three different ZYM tablets are all formulated differently, and have different price points from the company website. There’s a lemon-lime formulation called Endurance , which is billed as a “pure hydration” tablet with slightly lower electrolyte levels, higher B6 levels, and no Rhodiola supplement. A pack of three 10-tablet tubes (30 tablets total) sells for $24. The berry flavor called Catapult features 100mg of caffeine from herbal Guarana as well as a super-dose of Vitamin B12 (500mcg), and retails for $27 for a three-pack. The Rival orange flavor that I tested sells for $30 for a three-pack. There's a page where you can compare the three flavors side by side before purchasing them from the ZYM website store .
At some point it would be interesting to see how the electrolyte tablets from various companies compare to each other nutritionally – and since I’ve already reviewed Nuun tabs and will be reviewing GU tablets later this spring, I suppose I’m the guy to put that kind of post together. Look for that comparison in the next several weeks – but in the meantime, a few of my readers will get to try out ZYM tablets to test for themselves.
The folks at ZYM have agreed to provide one tube of Rival tablets to three winners chosen at random from the comments section below. Leave a comment to enter, and I’ll announce the winners this weekend. Thanks very much to ZYM for sponsoring this contest, and good luck to everybody!
Get updates as soon as they're posted! Click here to subscribe to Running and Rambling.
Check out the Running Life book for a collection of our most popular columns.