Immune
System
Maximized

A Dr. Zelenko Formula

Zinc
Immune
Support

Zinc is one of the active ingredients in Z-Stack.
It is one of the most well known immune
support ingredients to date.

Quercetin
Plant based
Nutrients

Quercetin is a leading active ingredient in Z-Stack.
Being a plant flavanol, quercetin is a natural
source of vital nutrients.

An Immune System Formula
Developed by Dr. Zelenko

Vladimir Zelenko MD is a board certified physician in New York.
He has provided counsel to White House personnel, governments on four different continents,
hospitals, physicians, celebrities and nursing homes.

2 Capsules Per Day
Boosted Immune System
Science Based Formula

Using Natural Vitamins Instead Of Overpowered Drugs,

  • Formulated by Dr.Zelenko
  • Maximize Your Immune Function

Zinc
Immune
Support

Zinc is one of the active ingredients in Z-Stack.
It is one of the most well known immune
support ingredients to date.

Quercetin
Plant based
Nutrients

Quercetin is a leading active ingredient in Z-Stack.
Being a plant flavanol, quercetin is a natural
source of vital nutrients.

Vitamin C

Vitamin C is an essential nutrient involved in the repair of tissue and the enzymatic production of certain neurotransmitters

Vitamin D

Vitamin D is a group of fat-soluble secosteroids responsible for increasing intestinal absorption of calcium, magnesium, and phosphate, and many other biological effects
  • Brand / Zelenko Labs
  • Product / Z-Stack
  • Formulated By / Dr. Zelenko
  • Function / Maximize Immune Function
  • Suggested Use / 2 Capsules per Day
  • Bottle Size / 60 Capsules
  • Ingredients / Zinc, Quercetin, Vitamin C, Vitamin D
  • Certifications / Kosher, GMP
  • Manufactured In / United States

What People Say About Us

Frequently Asked Questions

Who is Dr. Vladimir Zelenko?

Dr. Vladimir Zev Zelenko M.D. is a board certified familyphysician. Dr. Zelenko has practiced family medicine in New York’s HudsonValley. He has been described by his patients as a family member tothousands of families, and is a medical adviser to the volunteer ambulancecorps in Kiryas Joel, New York. Dr. Zelenko is known for developing his nowfamous “Zelenko Protocol,” which has saved countless lives worldwide.

+ Click here to read more about Dr. Vladimir Zelenko

What is Quercitin & How Does It Support the Immune System?

Quercetin is known for its antioxidant activity in radicalscavenging and anti-allergic properties characterized by stimulationof immune system, antiviral activity, and more.

Quercetin has a number of great health-promotingbenefits. Some of the top Quercetin benefits include the ability to help yourbody reduce inflammation and to improve your immune system’s health.

Research has shown that Quercetin has powerfulanti-inflammatory and antioxidant effects.

It was recently published in theJournal of Nutrients in 2016, that Quercetin is a safe and effective supplementboth for reducing inflammation and for improving immune system functions.

What is Zinc & How Does It Support the Immune System?

Zinc is found in cells throughout the body. It helps the immune system fight off invading bacteria and viruses. Zinc is essential for our immune system because it affects how our cells respond to infections. It can also help keep inflammation under control.

Zinc increases the activation of cells in the body that are responsible for fighting infection. It also activates enzymes that break down proteins in viruses and bacteria to reduce the chances of spreading.

Due to its direct antiviral properties, it can be assumed that zinc administration is beneficial for most of the population, especially those with suboptimal zinc status.

+ Click here to read more about the potential impact of Zinc supplementation on COVID-19 pathogenesis

What is Vitamin D & How Does It Support the Immune System?

Vitamin D is effective for COVID-19. Random effects meta-analysis of the 11 treatment studies to date shows an estimated reduction of 75% in the effect measured. Sufficiency studies show a strong association between vitamin D sufficiency and outcomes. Meta-analysis of the 24 sufficiency studies shows an estimated reduction of 58%

+ Click here to read more about Vitamin D’s effectiveness on COVID-19

What is Vitamin C & How Does It Support the Immune System?

Vitamin C, or ascorbic acid, is a water-soluble vitamin well known for its role in supporting a healthy immune system. Vitamin C contributes to immune defense by supporting various cellular functions of both the innate and adaptive immune system. Because our bodies cannot make vitamin C, it must come from the foods you eat every day.

Research shows vitamin C is essential for the growth and repair of tissue all over the body. Vitamin C helps heal wounds and repair and maintain healthy bones, teeth, skin and cartilage — a type of firm tissue that covers the bones. Taking vitamin C supplements appears to be able to both prevent and treat respiratory and systemic infections.

+ Click here to read more about Vitamin C and Immune Function

+ Click here to read more about Vitamin C and it’s effectiveness with COVID-19

Will Z-Stack Treat or Prevent COVID-19?

The FDA has not evaluated this product to treat or prevent COVID-19.  Please see peer reviewed journals, scientific data and clinical trials data for more information.