Detox from harmful elements and dormant viruses

You already know and trust the original Z-Stack, which Dr. Zelenko created to allow people all across the globe to take control of their health without relying on the corrupting power of big pharma.

Now experience Z-Shield – a specially formulated detox supplement created to work with your other Z products.

Dr. Zelenko’s promise was to support and strengthen your immune system. Z-Shield helps support the immune system by clearing toxins and preventing reanimation of dormant viral activity.

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

The ingredients in each capsule of Z-Shield weren’t chosen at random – they were chosen specifically for their natural abilities to support your immune system without side effects or harmful pharmaceuticals.

Explore the natural ingredients in Z-Shield

Top 4 most powerful Immune Support Supplements - All put into 1 capsule

St. John's Wort

Supports strong anti-viral and anti-parasitic activity that may also promote healing and repair of wounds. Also may promote the release of Serotonin and Noradrenaline for a healthy mind and body.

Effective against certain bacterial and fungal infections and studies show it has strong anti-viral properties. Can also support removing toxins from your body.
Promotes reduction in infammation. Infammation in our bodies can trigger dormant viruses. Also can help the liver to eliminate toxins from the body.

Helps inhibit virus replication and supports removing environmental toxins from the body. NAC bonds with glutamine and glycine to form glutathione, a powerful antioxidant. Glutathione performs many functions throughout your body, such as helping to maintain your immune system.

Aggressively supports the body’s naturally-occurring immune response when a virus attacks the system.

Zev continued his research into the body’s immune system and elements that suppress the response mechanism to heal and defend. One of the most common is dormant viruses and parasites. While the immune system gets rid of most viruses, some linger inside us for prolonged periods, hiding quietly without causing symptoms.

Such viruses include Epstein-Barr virus (EBV), Varicella-Zoster virus (VZV), Herpes viruses (like Shingles, Chicken Pox), and Cytomegaly virus (CMV). These cause people to have a compromised immune system, such as elderly and people with chronic infections. The consequences of these viruses’ reactivation can be even more dire and give them a higher risk factor when exposed to common daily viruses like the common cold, influenza, and more.

Our team developed the Z-Shield formula to detox our bodies from harmful elements that can stay in our blood stream, but to also try and directly target dormant viruses themselves.

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, vegan, and gluten-free.

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

About Us

Dr. Zelenko knew the importance detox for overall immunity.

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

To this day, the same team which built Z-Stack continues Dr. Zelenko’s legacy with uniquely-designed natural solutions to modern-day living, including Z-Shield.

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What People Say About Us


My symptoms started 2 days ago. Just received my Z stack so I’m starting a little late. My plan is fruits, vegetables, lots of sunlight, and of course Z stack. I think I’m gonna be OK. Thanks Dr Z. 💪🏻😎👍🏻


I love this product. Dr. Zelenko has provided a priceless service to the world with his over-the-counter, all-in-one treatment and prevention of the virus. I haven't had a cold or the flu (nor Covid-19) since I began taking these capsules daily. Such a simple solution to all the needless worry, fear, and anxiety. Endless thanks to him and his team at the lab!!


Dr. Zelenko I sincerely appreciate what you have created. To put it in one pill makes it so easy for our family. Thank you for this product but thank you for your honesty you’re a good man Dr. Z


I’ve been taking Z-stack for a few months now. I’ve been around individuals who had Covid and have not gotten sick. Thank you Dr. Zelenko! God bless you! 🙏🏽🇺🇸

Zelenko Protocol

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