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SiS Immune Tablets
$6.99–$55.29$69.99Save 90%
In stock at checkout.thefeed.com
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…
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SiS Immune Tablets at a glance
| Brand | The Feed |
|---|---|
| Price | $6.99–$55.29 (was $69.99) |
| Type | Vitamins & Supplements |
| Options | 1 flavor, 2 sizes |
| Availability | In stock at checkout.thefeed.com |
| Returns | Contact The Feed within 30 days if food arrives unsuitable to eat for a replacement or… |
Price check
At $6.99, the SiS Immune Tablets is one of The Feed's more affordable items, whose 2,347 listed products run $0.53 to $6,125.
It's currently 90% below its listed price of $69.99. Sale prices can end without notice, so check the live price before you order.
Similar items from other brands we track run $67.36 to $99.97.
About this product
From The Feed's product listing:
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
Frequently asked questions
Is the SiS Immune Tablets on sale?
Yes. The Feed lists it at $6.99, down from $69.99 (90% off). Sale prices change, so confirm the live price on checkout.thefeed.com.
What is The Feed's return policy?
Contact The Feed within 30 days if food arrives unsuitable to eat for a replacement or credit. Opened food gets store credit only, gear is returnable only if damaged, and opened specialty supplements (over $40), ketones and CBD are final sale.
What options does the SiS Immune Tablets come in?
Flavor: Immune Orange. Size: 10 Tablets, Box of 8x10 Tablets.
Where can I buy the SiS Immune Tablets?
The SiS Immune Tablets is sold directly by The Feed on checkout.thefeed.com. The Shop now button on this page goes straight to the product there.
Is the SiS Immune Tablets in stock?
Yes. The Feed lists it as in stock on checkout.thefeed.com as of our latest check. Stock and prices refresh throughout the day.
Is The Feed a legit store?
The Feed is one of the best places to try endurance fuel before committing, since you can buy single gels, chews, bars and drink mixes from dozens of brands in one order. Skip it if you only buy one product in bulk and can get it cheaper on subscription from the maker. Read the return rules first: opened food gets store credit, not cash, and some supplements are final sale once opened. Our full The Feed review covers shipping, returns and what to check before ordering.
Is the SiS Immune Tablets expensive?
At $6.99 it is on the affordable end of The Feed's range ($0.53 to $6,125 across 2,347 products), and similar items from other brands run $67.36 to $99.97.
More from The Feed
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Alternatives from other brands
$6.99–$55.29Shop now at The Feed →