Stay healthy all year long and save BIG for Father's Day.

Z-Stack is an all-in-one immune-boosting formula naturally designed by world-renowned researcher and scientist Dr. Vladimir Zelenko with four natural, powerful supplements in one easy capsule.

Better yet, save an unprecedented 20% on all all purchases made through Father's Day using coupon Dad20 at checkout.

20% discount reflected at checkout using coupon code DAD20.

$44 (an $11 savings!)

Enjoy free shipping
within the United States

Made in the USA
Kosher certified
GMP certified

Save 20% through June 21 using coupon Dad20.

Z-Stack is great for dads, sons, grandparents, and your entire family.

Z-Stack® was formulated by renowned scientist and family medicine Dr. Vladimir Zelenko – who focused on how to naturally build a strong immune system to protect against bacteria, viruses, toxins and other potentially harmful elements.


Quercetin reduces inflammation and helps to strengthen the immune system.

Vitamin C

Vitamin C is an essential nutrient for healthy immune system response, helping your body fight off illness-causing viruses and bacteria.

Vitamin D3

Vitamin D3 arms your body against viruses and bacterial infections.


Zinc helps the body activate your immune system.

Every vitamin has a purpose and our unique formulation of Z-Stack™ was developed with your immune system in mind.

Learn how zinc ionophors support a strong immune system.

Hear from Dr. Zelenko himself as he explains the role of zinc ionophors in Z-Stack and how they support a strong immune system.

Save 20% through Father's Day with coupon code Dad20.

Enjoy a 20% savings on our other products, too.

Discount shown at checkout after applying coupon code Dad20.

Fight the flu with foundational immune supporting ingredients, including elderberry.

$44 (an $11 savings!)

Give your children or grandchildren the immune support they need with the great taste of pineapple.  

$49.50 (a $5.50 savings!)

Detox your body from harmful elements in your blood and directly target dormant viruses.

$52 (a $13 savings!)

All-natural ingredients

Dr. Zelenko's goal was to boost your immune system without harmful medications – and his years of research backs it up.

Fast shipping

Enjoy fast, free shipping when you order Z-Stack products.

Made in the USA

All of our products are proudly made in the United States. We also stand by our products with our quality guarantee.

Subscribe and learn more about the all-natural, powerful Z-Stack.

Thank you!