Product Description
Hard training breaks your body down. That's the point. But here's the catch: every hard session also temporarily suppresses your immune system — leaving you vulnerable to the coughs, colds, and upper respiratory bugs that derail training blocks at the worst possible moment. Especially in the shoulder seasons and when traveling more.
Most athletes never connect the dots between a heavy training week and getting sick. The SiS Immune Tablet is the effervescent immune support formula built specifically for athletes who train hard and need something easy to take but reliable every time. The SiS Immune Tablet bolsters your immune system so you can stress less and train more.
Precision Dosing for Athletes – Consumer vitamin C supplements often pack 1,000mg or more per serving. That sounds better, but for athletes, it can actually blunt the body's natural training adaptation when taken around a session. SiS Immune delivers exactly 200mg of Vitamin C and 2.5mg of Iron — clinically supported levels that maintain immune strength during and after intense exercise while protecting your body's ability to get fitter and stronger from each session.
BC30™ Probiotic: The Gut-Immune Connection – Your gut and your immune system are more connected than most people realize. SiS Immune includes BC30™, a research-backed probiotic strain that supports digestive balance and healthy immune function. A stable gut means a more resilient athlete — especially during high-volume training blocks when stress on the body is highest.
Only 9 Calories – This isn't a recovery shake or a meal replacement. It's a daily immune support tablet that dissolves clean in 500ml of water and slots effortlessly into your routine without disrupting your calorie targets or your gut before training.
How to Use SiS Immune Tablets
Daily: Drop one tablet into 500ml (17 oz) of water, let it fully dissolve, and drink it as part of your regular daily routine — not just on training days.
Timing: Take it any time of day. Many athletes prefer it in the morning or post-workout as part of their recovery stack.
Pro Tip: Drink within 24 hours of preparation for best results. Consistency is key — daily use during heavy training blocks delivers the most benefit. Take it when traveling to and from events as well.
Informed Sport certified and batch-tested for banned substances, so you train and compete with confidence. Athletes who stay healthy, train consistently. SiS Immune is how you protect that consistency.
- Nut free
- Sport Tested: Informed Sport
Nutrition Facts
Immune Orange / 10 Tablets
Serving Size: 1 Tablet
Serving Per Container: 10
| Amount Per Serving | ||
|---|---|---|
| Calories | 10 | |
| % Daily Value* | ||
| Vitamin C (as L-Ascorbic Acid) 185mg | ** | |
| Iron (as Iron Sulphate) 2.1mg | ** | |
| Sodium (as Sodium Bicarbonate) 310mg | ** | |
* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
** Daily Value (DV) not established
Always Happy Promise: Don't like a product? Tell us within 30 days of receipt and we'll make it right and make you happy. Here at The Feed, we want you to love your experience and the sports nutrition products you purchase. If, for any reason, you are not satisfied with your nutrition specific purchase, tell us.
We do not accept returns on food items that have been opened, but we will issue a store credit if you are unsatisfied. In the event of a return, you must first contact us before sending back a return shipment.
Consumable products over $40 receive a 50% store credit. This includes specialty nutrition products such as ketones or supplements/vitamins.
SiS Immune Tablets FAQ's
Everything you need to know about SiS Immune Tablets.
Daily. One tablet dissolved in 500ml of water — morning, post-workout, whatever fits your routine. The timing matters less than the consistency.
Because more isn't better here — it's actually worse. Mega-dose Vitamin C taken around training blunts your body's ability to adapt to the work you just did. 200mg keeps your immune system strong without stealing your fitness gains.
It's a research-backed probiotic that keeps your gut healthy — and your gut is more connected to your immune system than most athletes realize. A stable gut means a more resilient athlete, especially deep in a hard training block.
Yes. Informed Sport certified and batch-tested against the full WADA banned substance list. Take it before races, during travel, all season long — zero concerns.
Heavy training blocks, shoulder seasons, and race travel — that's when your immune system takes the biggest hits. Lock in the daily habit during those windows and you'll notice how rarely illness knocks you off your plan.