Cell Block

(6 customer reviews)


Cell Block is a high-dose blend of natural ingredients that is highly effective in boosting and supporting your immune system.

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Cell Block is a high-dose combination of Vitamin A and Vitamin D3 that we specially formulated to support your immune system and provide extensive overall health benefits.

Achieve PEAK IMMUNE FUNCTION with Clarke BioScience’s Cell Block.

Why Cell Block?

Supports Your Immune Health

Our powerful combination supports your immune function and your body’s natural defenses.

Safe Ingredients

Cell Block is made with high-quality ingredients and manufactured to GMP standards.

Made In the USA from Globally Sourced Ingredients

Cell Block is safely crafted from globally sourced ingredients.

More About Vitamin D3:

Why increase your Vitamin D levels?

  • Supports respiratory health

    Research indicates that Vitamin D helps support upper respiratory health.

  • Modulates Oxidative Stress While Supporting Immune Function
    Vitamin D helps reduce oxidative stress at the cellular level.  By increasing Vitamin D levels, you can also support your immune health

More About Vitamin A:

Why supplement your health with Vitamin A?

  • Support the production of IgA, another important immune cell
    Vitamin A supports your body’s production of this immune cell

  • Supports your heart
    Vitamin A is known to help support your heart, immune function, cell growth and cell reproduction.

  • Strong Antioxidant
    Vitamin A is a strong antioxidant that helps fight free radical damage and promotes healthy aging.

The Science Behind the Union

Of Vitamin A And Vitamin D3

This awesome compound is designed to support your immune health.

Studies have shown that Vitamin A increases the number of both T and B lymphocytes (immune cells) and also increases the immunoglobulin IgA which coats all our mucus epithelium in our noses, lungs, and GI tract.  These are important elements of our immune system.

Vitamin D proteins pair up with Vitamin A proteins in a powerful immune duo!

How To Take Cell Block

Cell Block requires only 2 doses once a month to help support your immune health.

Just once per month! Cell Block is hassle free and easy to use!

Frequently Asked Questions

  • Is it safe to take high dose Vitamins like A and D?
    Cell Block was designed to be taken for only 2 days, then only repeated after 4 to 6 weeks. This allows your body to utilize the amounts it needs, then eliminate what it doesn’t over that course of time. This product should not be taken on a daily basis.

  • Does Cell Block support respiratory health?
    We have paired these two vitamins together because research suggests that they provide strong support for our upper respiratory and immune health.

  • Can my children take Cell Block? They are in school, and I want to protect them.
    We don’t recommend children under the age of 15 take Cell Block. It is always advised to consult with your pediatrician before giving your child this product.

  • If my pediatrician says it’s okay, what is a typical children’s serving?
    If your pediatrician gives the okay, then we recommend only giving them only 1 serving from the 2-day dose of Cell Block.

  • How can taking vitamins for only 2 days support me for an entire month?
    Cell Block contains Vitamins A and D. These vitamins are fat-soluble, which means that they stay in your system for a longer period of time than water-soluble vitamins, like Vitamin C. Therefore, you typically don’t need to continue to “top off the tank” with the fat-soluble vitamins like A, D, E, and K.

“Vitamin A and Vitamin D, when paired together are a tag-team to support immune system function and upper respiratory health. When taken in the right ratios, at the right dosage, it provides excellent support to your immune system.”

Dr. Lewis Clarke

6 reviews for Cell Block

  1. Lee D (verified owner)

    When my family started feeling under the weather, I was able to get this shipped quickly. This was my 4th order of Cell Block and I’ve always received my orders fast from Clarke Bioscience. When it counted most, I was able to get everyone on this supplement to help ward off what could have been really bad. I feel protected when I take this supplement and my health track record matches that sentiment. Strongly recommend!

  2. Jessica G (verified owner)

    This was a god send over the holiday season. I had it for 3 months and then stopped taking it. During that time, everyone else around me didn’t do so well. I will use this every holiday season and every time I get on a plane. My immune system thanks you!

  3. Jennifer G (verified owner)

    During this challenging year plus I was deemed an essential worker. That meant I worked 40+ hours per week in a busy store with much exposure. I started taking cell block early on to support my immune system. I think it is a great product and would highly recommend!

  4. Deborah L (verified owner)

    Our body’s immunity system is more important than ever. Along with proper rest, good nutrition, and exercise my husband, daughter, son and myself have been adding an extra boost to our immune systems by taking Cell Block from Clarke Pharmaceuticals. We are thankful for the research and ingredients that Dr Clarke has put into this product and that gives us assurance we are getting the best support to our immune systems we need today.

  5. Ashley S (verified owner)

    I had the best experience with cell block! Dr. Clarke is amazing and its a great product!

  6. Larry W (verified owner)

    My wife turned me on to the cell block. I work on a team of men and we work in closed quarters. We all started taking the cell block from Clarke Bioscience. We are well into 2021 and we are all working daily and no one has had any issues. I believe it was the added support that kept us healthy.

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