I’m currently in the midst of marathon training for Grandma’s Marathon! One primary goal I have is to stay healthy in order to make the most of this training cycle. With marathon training, there’s not a lot of wiggle room given the miles you need to cover to be ready come race day. I can’t afford to get sick, and need to keep any injuries at bay. Lucky for me, I am fortunate enough to test and write a product review for SiS Immune.
I’m already a huge fan and consumer of their Isotonic Energy Gels, I did not need any convincing when I had the chance to test and review this product!
No Time for Down Time – Strong Immunity Matters!
In these last two months of marathon training, the mileage and intensity are at its peak. Thankfully, the SiS Immune Tablets are for just that –they’re designed to support and maintain immune function during and after training. That’s important as our immune system can be suppressed for as long as 72 hours after a tough workout (and I have a LOT of them!).
The Right Amount of Ingredients Matters
SiS Immune tablets contain 200 mg vitamin C (equivalent of two oranges), 2.5 mg iron, and .9g of sodium. It’s important that supplements don’t have an excessive amount of vitamins — as that, too, can can suppress the training response. Who knew! Fortunately, SiS Immune is designed to be at a level that supports athlete health without compromising training benefits.
Related topic: How to Stay Healthy and Nail Your Marathon Recovery
This is a product review of Sis Immune, so let’s get to it! I’ve really enjoyed using SiS Immune! It’s such an easy and convenient way to add an immunity boost to a normal diet, while supporting my immunity function post-workout. Just drop the tablet in 500ml of water, watch it fizz (the fun part), and then enjoy the drink! I typically take it each morning; I like tackling my hydration and immunity all at once.
The orange taste I enjoy!; it reminds me of the same flavor profile as Tang, a drink I loved when I was a kid. As with the SiS Isotonic Energy Gels, the product delivers on good taste, ease of use, and performance.

Disclaimer: I received Science in Sport Immune Tablets as part of being a BibRave Pro. Learn more about becoming a BibRave Pro (ambassador), and check out BibRave.com to review, find, and write race reviews!
Plus SiS Immune Tablets are dairy, nut, and gluten-free. An effervescent drink that’s quite frankly fun to drink.
Usage recommendation is to drink up to 1 tablet per day in addition to a good, balanced diet. Also know that you can prepare your drink ahead of your workout and refrigerate it. Once mixed, consume it within 24 hours.
SiS Immune Review + Discount Code
Use my discount code, “SiS-BibRave-21” to SAVE 15% OFF your next Science in Sport order. It’s a great code for stocking up because it works with all other offers! Keep in mind this code is good through May of 2021.