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Your preventative immune-boosting super formula.

As a result of Dr. Zelenko's independent research, Z-Stack contains the top 4 most powerful immune support supplements – all in one small capsule.

Use coupon code Winter10 at checkout and get 10% off your first purchase.

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You can't afford downtime from work or family, so let Z-Stack help keep viruses away year-round.

Here's how:

Z-Stack™ was formulated with you in mind. Our science-backed vitamins boost your immune system so that you can recharge your natural body's defense and healing abilities.

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

Vitamin D3 arms your body against viruses and bacterial infections.

Zinc helps the body activate immune system

Quercetin reduces inflammation and helps to strengthen immune system.

Every vitamin in Z-Stack™ has a purpose and was formulated with your immune system in mind.

Made in the USA

Kosher Certified

GMP Certified

Made in the USA

Kosher Certified

GMP Certified

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About Z-Stack Founder Dr. Vladimir Zelenko

Dr. Zelenko's Notable Achievements

In March 2020, Dr. Zelenko’s team was one of the first in the country to successfully treat thousands of Covid-19 patients in the pre-hospital setting. Dr. Zelenko developed his now-famous “Zelenko Protocol” which has saved countless lives worldwide.

Dr. Vladimir Zelenko has been cited in over ten COVID-19 research studies due to his own scientific research done on the subject.

Regretfully, Dr. Zelenko passed away from a long battle with cancer in late 2022 – but his patented Z-Stack formulas, the Zelenko Protocol, and his quality guarantee lives on.

Fighting For Your Health

Dr. Zelenko was determined to be at the forefront of the fight against COVID-19 virus and had a track record supporting that already.

He developed his proprietary formula, focusing on a strong immune system to protects against bacteria, viruses, toxins and other potentially harmful elements. Z- Stack will help your immune system take on whatever comes at it.

Dr. Zelenko made countless appearances in the media – including Forward.com, HumanEvents.com, Peter Breggins, OANN, Frank Sontag Radio, The Awakening: World Truth Summit, Rudy Giuliani's Common Sense Show, and more.

Based on my front-line experience, it is essential to start treatment against Covid-19 immediately upon clinical diagnosis of the infection and not to wait for confirmatory testing. There is a very narrow window of opportunity to eliminate the virus before pulmonary complications begin. Delaying treatment is the essence of the problem. My treatment regime has saved thousands of patients without serious complications or negative side effects. Hundreds of top doctors across the world have embraced pre-hospital treatment of Covid-19 in high-risk patients.          

                                        -Dr. Vladimir Zelenko

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Save 10% with a one-time purchase today, or save 10% every month when you subscribe.

Why subscribe? Save money, keep your immune system healthy, and never worry about running out of Z-Stack formula, with fresh bottle shipped once a month.

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These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease. Information this website is provided for informational purposes only. It is not meant to substitute for medical advice from your physician or other medical professionals. You should not use the information contained herein for diagnosing or treating a health problem or disease, or prescribing any medication. Read all product documentation. If you have or suspect that you have a medical problem, promptly contact your regular health care provider.