Vladimir Zelenko Z Stack Review: The Ultimate Immune System Booster?

Are you looking for an all-in-one vitamin and mineral supplement to help cover your daily health needs? If so, the Zelenko Z-Stack could be the perfect choice for you. It is a comprehensive combination of essential vitamins and minerals that can take care of your nutrition needs in a single pill each day. But just because it is convenient does not necessarily mean it’s good! Is this product really worth it, or another marketing gimmick? In this blog post, we’ll be breaking down everything there is to know about the Zelenko Z-Stack, from its benefits and efficacy to potential side effects. So if you’re curious about whether you should give this multivitamin stack a try or not, read on for my full review!

An Introduction to Zelenko Z-Stack All-in-One Vitamins and Minerals

If you want to maintain good health but do not want to take multiple supplements daily, Zelenko Z-Stack might be what you’re looking for. This supplement is specially formulated to support immune and overall health with a combination of vitamins, minerals, and other beneficial nutrients. Plus, it’s made with high-quality ingredients and free from harmful additives, making it a safe and reliable option.

Dr. Vladimir Zelenko developed the all-in-one supplement. He is a physician who built a strong reputation among some users for his early advocacy of early treatment for COVID-19 using his Zelenko Protocol – which combines hydroxychloroquine (HCQ), zinc, and azithromycin (AZM). 

This has led some users to view Zelenko Z-Stack Vitamins as a trusted and effective supplement regimen. However, the medical community criticized the Zelenko Protocol due to its lack of scientific evidence and potentially dangerous side effects.

Even then, Dr. Zelenko was a courageous advocate for truth and justice during the COVID-19 pandemic. His legacy will continue through his work and dedication to helping others during such a difficult time.

How much is Zelenko Z-Stack and Where can you Buy the Product?

The price of a bottle of Zelenko Z-Stack is $55.00, where you can save about 10% if you bulk buy 6 bottles of the same product for $300.00 only. Moreover, you can receive almost 20% savings if you order 12 bottles of Zelenko Z-Stack in bulk for $540.00 only.

You can also avail of the 10% discount on all your Zelenko Z-Stack purchases if you’re already subscribed to the Zelenko Protocol website. Here are the prices of Zelenko Z-Stack for single and bulk orders upon applying the subscription discount: 1 Bottle for $49.50, 6 Bottles for $270.00, and 12 Bottles for $486.00.

You can order Zelenko Z-Stack at the same website using the following payment options: American Express, Mastercard, PayPal, Shop Pay, or Visa.

What are the Ingredients in the Zelenko Z-Stack and How Do They Work Together for Maximum Health Benefits?

The Z-Stack supplement combines several ingredients chosen for their unique health benefits, such as Vitamin C, Vitamin D3, Zinc, and Quercetin. It is claimed to also contain Bromelain, although it is not included in the supplement facts on the product label. One bottle of Zelenko Z-Stack contains 60 capsules, with a daily dosage of 2 after food intake.

The Zelenko Z-Stack exceeds the daily recommended intake of its ingredients for an adult, except for Quercetin. You must seek advice from your healthcare provider before taking the product.

We will look at each ingredient and the corresponding bodily functions, sources, and potential side effects.

Vitamin C (Ascorbic Acid)

The Zelenko Z-Stack contains 800 milligrams (mg) of Vitamin C, also known as ascorbic acid, which is water-soluble. It supports the immune system by helping to produce and activate white blood cells. Ascorbic acid is crucial in making collagen, a protein that keeps your skin, bones, and cartilage healthy. It is also a powerful antioxidant that helps protect cells from damage caused by free radicals. Vitamin C can also help your body absorb iron from plant-based foods.

Most adults need between 65 to 90 mg of vitamin C daily. However, some people may need more, especially if they have certain medical conditions or are at risk for vitamin C deficiency. It is important to note that the upper limit of vitamin C intake for adults is 2,000 mg daily. 

You can get vitamin C from citrus fruits, kiwifruit, bell peppers, and broccoli. But if you’re not getting enough from your diet, supplements can help. You should be aware that vitamin C supplements can interact with certain medications, like chemotherapy drugs and blood thinners.

Too much vitamin C can cause stomach problems like diarrhea, nausea, and cramps. And if you have a history of kidney stones, taking high doses of vitamin C may increase your risk of developing more stones. It would make sense for you to take Zelenko Z-Stack if you are diagnosed with vitamin C deficiency or do not take any other sources of vitamin C. 

Vitamin D3 (Cholecalciferol)

The product also contains 125 micrograms (mcg) of vitamin D3, also called cholecalciferol, which is fat-soluble. The main job of vitamin D3 is to help keep your bones strong and healthy by ensuring your body can absorb calcium and phosphorus. It also supports your immune system and may even help lower your risk for certain cancers and autoimmune disorders.

Adults need about 600 to 800 international units (IU) of vitamin D3 daily. However, some people may need more, especially if they have certain medical conditions or are at risk for vitamin D deficiency. Just make sure not to take more than 100 mcg, or about 4,000 IU, of vitamin D3 per day, as it could be harmful. 

Your skin makes vitamin D3 when it’s exposed to sunlight. You can also get vitamin D3 from fatty fish, egg yolks, fortified milk, and cereal. But if you don’t get enough from your diet or sunlight exposure, supplements can help. 

Zelenko Z-Stack exceeds the 100 mcg daily Tolerable Upper Intake Level of vitamin D3, which can lead to symptoms like nausea, vomiting, constipation, and weakness. It can also raise calcium levels in your blood, which can cause kidney stones and other issues. 


Zelenko Z-Stack also includes 30 mg of zinc. Like vitamin C, zinc also supports the immune system by promoting the production and function of white blood cells. It also contributes to the health of the skin and eyes, reproductive health, and fertility. Additionally, zinc is involved in taste and smell perception. Zinc deficiency can lead to loss of appetite and impaired sense of taste and smell.

The recommended daily dose of zinc for most adults is 8-11 mg daily. However, higher doses may be needed for people with certain medical conditions or at risk of zinc deficiency. It’s important to avoid exceeding the daily Tolerable Upper Intake Level of 40 mg for all males and females aged 19 and older. Zinc is present in oysters, beef, pork, beans, nuts, and whole grains. However, supplements may be necessary to meet daily requirements. 

High doses of zinc can cause gastrointestinal discomforts like nausea and diarrhea. Long-term overuse of Zelenko Z-stack for zinc intake can also cause copper deficiency, leading to anemia and other health issues.


The product has 500 mg of quercetin, a plant pigment in many fruits and veggies, like berries, onions, apples, and citrus. It protects cells from harmful molecules called free radicals by working as an antioxidant. It also has anti-inflammatory properties, which might make it helpful in reducing inflammation all over the body. 

The recommended daily dose of quercetin varies from person to person, depending on why they are taking it. Clinical studies have used daily intakes of up to 500 mg. You can get quercetin from food, but supplements are also available. 

Taking too much quercetin can also cause gastrointestinal discomforts, such as nausea and stomach cramps, and allergic reactions in some people, causing symptoms like hives, swelling, and difficulty breathing. 

Pros and Cons of the Z-Stack Supplement

The Zelenko Z-Stack may seem appealing if you want to boost your immune system or prevent illness in one capsule. This product includes vitamins C and D3, zinc, and quercetin – which were studied previously for their potential health benefits. 

However, before jumping on board, we should weigh the pros and cons. On the plus side, these vitamins may help support a healthier immune system and potentially reduce the duration or severity of illnesses like the common cold. On the other hand, excessive zinc or vitamin C can lead to unpleasant side effects like stomach upset and nausea. 

Here is a comprehensive list of the pros and cons of using the Zelenko Z-Stack.


  • Individual ingredients such as Vitamin C, D3, and Zinc can help support a healthy immune system.
  • It contains quercetin, which has been studied for its potential anti-inflammatory properties.
  • Bulk buying Zelenko Zstack vitamins is more cost-efficient than individual purchases of the same product. 
  • You can avail of the subscription plan to further lower the price of Zelenko Z-Stack.
  • A free telemedicine session with a medical doctor will be provided if you get sick while taking the Zelenko Zstack vitamins as instructed.


  • No scientific evidence has found that Zelenko Zstack vitamins can boost immunity or provide additional health benefits beyond what you would get from taking the individual ingredients separately.
  • Some people may experience side effects such as nausea or stomach upset when taking this supplement due to its high-potency ingredients.
  • One bottle of Zelenko Z-Stack is unnecessarily expensive. It would be better to purchase the same ingredients and dosage individually at lower prices.

Is the Zelenko Z-Stack as Effective as It Claims To Be? A Look at Customer Reviews

Z-Stack, a health supplement claiming to boost immune function and prevent illness, has garnered attention in recent years. While some users attest to its effectiveness, others question whether the product lives up to its claims. E-Bay shows overall favorable reviews and ratings of the product. Meanwhile, some users provided negative reviews of Zelenko Z-Stack Vitamins in Trustpilot. User ratings for the two (2) credible sites can be seen below.

  • E-Bay: 5 out of 5 stars, based on 18 reviews and ratings
  • Trustpilot: 2.6 out of 5 stars, based on 12 reviews and ratings

Research on the specific blend of Z-Stack and its impact on illness prevention is minimal, even though the product contains vitamins and minerals that support immune function. As with any supplement, it is necessary to consult a healthcare provider before use and consider the potential risks and benefits. Ultimately, the effectiveness of Zelenko Z-Stack may vary from person to person, and more research is needed to fully understand its impact on immune health.

Positive Reviews of Zelenko Z-Stack

Users like to use Zelenko Z-Stack because it is an all-in-one immune-boosting super formula. This saves them from the hassle of buying separate individual tablets for their daily vitamin and mineral intake. 

Developed by Dr. Vladimir Zelenko, the Z-Stack contains zinc, vitamin C, vitamin D3, and quercetin for maximum potency. Some users claimed the product provides long-term health benefits such as improved immunity and overall wellness.

It is also a Kosher-certified product, so users can rest assured that it meets the highest quality and safety standards. 

Negative Reviews of Z-Stack Supplements

Most of the negative reviews come from issues related to the delivery of the product and recurring billings. Some users do not receive the product upon ordering from the website. Moreover, recurring bills had been made for them, even with canceled or undelivered orders. The customer service of Zelenko products is also an issue, as it does not even respond to the delivery and recurring billing issues experienced by some users. 

Taking Zelenko Z-Stack may vary for each user. Some users experienced allergic reactions upon taking the product. Also, the price of Zelenko Z-Stack is unattractive for some users, as they prefer buying the same ingredients separately at lower prices. 

Vladimir Zelenko Z Stack Review by Customers

Name/Nickname: Pavla

Honest doctor who really cares about his patients. God Bless Dr Zelenko🙏 I ordered Z Stack to boost my immune against covid.

Name/Nickname: Josh

My wife and mother inlaw got covid and I already was on the pills since I work with public. I didn’t even get it, I had them on vitamins and zinc so their infection was minimum thankfully. Thank you Doctor we will never forget how you kept your oath to humanity.

Name/Nickname: Sharen

Happy new year and God bless you. I am taking the Z stack. Thankful!!!! Hoping to keep it up being retired on fixed income. 👏

Name/Nickname: Russell

Started on Z today. Still having low 02 issues on and off. Taking a spray steroid twice a day and it helps but doesn’t last long. I look forward to see some improvement with using Z.

Name/Nickname: Karin

I am taking Z stack. HAPPY NEW Year Dr.Zelenko May God give you many many years you are the best and thank you for caring about Humanity.

Name/Nickname: Marie

Thank you Dr. Z for the peace of mind you have bought us. This really cleared my lungs.

Name/Nickname: Rebeca

Praying for you , Dr Zelenko . You are the best . Z Stack works!!!! We’ve proved it!!!

Name/Nickname: Michael

Just heard your X22 Report interview and ordered my first Z-Stack. So much easier than finding all the right separate dosages with good quality products in the stores, especially now that the gov’t is limiting Quercetin. Thank you for what you are doing to save humanity.

Name/Nickname: Sabrina

God bless you and protect you Doctor!! Thanks for being an Advocate of Truth.

Name/Nickname: Paola

G-d bless this amazing doctor! We need more honest medical professionals like him he actually save lives and doesn’t follow political agendas! Z-Stack is my life saver!

Name/Nickname: Dara

Dr. Zelenko, thank you for the Z Stack. You are such a smart doctor and have so much integrity. Very rare in this world. Thank you so much and God bless you!

Name/Nickname: Kimberly

Your protocol saved my 76 yr old father…..he has COPD, heart disease, and history of blood clots…as soon as he tested positive I had him follow your protocol and his oxygen never dropped under 94 and he beat Covid in 11 days. God bless you and thank you from the bottom of my 💜

Name/Nickname: Ina

I was taking Quercetin, Zinc, Vitamin C, and Vitamin D all separately. When I heard about your product I now take it as it is so much easier. Thank you!!

Name/Nickname: Josh

This works. Been taking these ingredients for a year. Been exposed directly 3 times. Over 60 with diabetes. Have not gotten covid.

Is the Zelenko Z-Stack Worth It? Here’s the Final Verdict

The Zelenko Z-Stack has been a topic of much discussion and debate since the onset of COVID-19. Others remain skeptical of its purported benefits, while some swear by its effectiveness in preventing and treating COVID-19.

It provides essential vitamins and minerals for a healthy lifestyle. Numerous customer reviews have shown that it is genuinely effective in improving overall health, helping combat fatigue, and reducing stress levels. 

Despite this, some may not find it suitable, given its ingredients exceed the daily recommended intake for adults. This could lead to potential side effects linked to excessive doses of vitamin C and D3, zinc, and quercetin. Moreover, some users may find the product unnecessarily expensive. They preferably purchase the same ingredients and corresponding dosage individually at lower prices.

Whether or not the Zelenko Z-Stack would be worth it would vary from individual to individual. Ultimately, the decision to use the Zelenko Z-Stack should be made in consultation with a healthcare professional, considering individual health needs and the potential risks and benefits of supplementation.

Vladimir Zelenko MD Z Stack Coupon Code & Deals:

5% off Vladimir Zelenko MD Z Stack Coupon Code (CLICK BUTTON BELOW)

$120.00 off Z Stack 12-Bottles Pack Bundle Discount

$30.00 off Z Stack 6-Bottles Pack Bundle Discount

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