Phil's Trusted Immunity Brand

The Tried, Trusted, and True Kosher Immune Supplement.

Z-Stack is one of Dr. Zelenko's premier products that he specifically designed which supports your body's natural immune system.

It's the only kosher vitamin Phil Godlewsky recomends for his family and yours! Use code PHIL and save 20%!

Z-Stack was developed with real, all-natural ingredients.

The ingredients in each capsule of Z-Stack weren't chosen at random – they were chosen specifically by Dr. Zelenko from his well-documented research for their natural ability to help support your immune system and body's natural defenses.

Explore the natural ingredients in Z-Stack

Vitamin C (click to expand)

Vitamin C has been shown to play a complex, protective role against toxic compounds formed from oxidized lipids and may support overall immune health.

Vitamin D3

Vitamin D has been shown to increase intestinal calcium and phosphate absorption.

Zinc

Zinc is a nutrient found throughout your body that may support your immune system and metabolic function.

Quercetin

Quercetin may promote a healthy inflammatory response. This nutrient may help your body better absorb and utilize vital nutrients like Vitamin C.

Experience Dr. Zelenko's premier immunity supplemement. Use Z-Stack for daily for that extra immune support and stay healthier.

The ingredients in Z-Stack – Vitamin C, D, Zinc and Quercetin – work synergestically to maximize absorption of each other and support healthy cellular activity.

Dr. Zelenko knew the importance of immune health for optimum wellness.

Each product from Z-Stack was built from Dr. Zev Zelenko's critical research into natural immunity.

Frequently purchased together

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Learn how Zinc Ionophores play a role in supporting your immune health

The Zelenko Way

Free shipping on all orders

All Zelenko products feature fast, free shipping on all orders because we know how important it is to stay healthy.

Quality guaranteed

Dr. Zelenko built his legacy on the same products that bear his name to this day. Zelenko Labs stands behind its products with a 100% satisfaction guarantee.

Kosher, vegetarian, and gluten-free.

Z-Stack was forumulated to be safe, healthy, and taken by people from all walks of life.

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