Small but mighty

That's right, our 100 mg is better than any other brand's 500 mg capsule. Glucan 300® is THAT good.

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For every immune system

(Let us know if you figure out an easy way to give it to cats.)


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Proven the best, again and again.


Maybe it was a friend or family member that recommended our product, or a health care professional. Maybe you've seen our product on the shelf of your local friendly health food store. You may have read about us in a book or on a website.


No matter how you got here, we know this:


If you've heard about us, it's because you need the best.

Your innate immune system is your body's first line of defense.

What do innate immune cells do?


They recognize and respond to threats quickly in a non-specific way. This means innate immune cells do not need special instructions or signals from other parts of your body to act. They innately know how to do their job.