about us

the holistico story

Just real food ingredients with nothing to hide.

whole food vitamins & minerals ✦ whole food vitamins & minerals ✦ whole food vitamins & minerals ✦ whole food vitamins & minerals ✦ whole food vitamins & minerals ✦ whole food vitamins & minerals ✦ whole food vitamins & minerals ✦ whole food vitamins & minerals ✦

lichen
in vitamin d
Wild lichen for its natural production of D3
chickpeas
in vitamin d
Fermented non-GMO chickpeas for K2
beef liver
in vitamin d
Desiccated beef liver for its naturally occurring retinol
horseradish tree leaf
in both
Horseradish tree leaf for its naturally occurring minerals and phytonutrients
coconut
in vitamin d
Coconut flesh oil for a stable fat source since Vitamin D is fat soluble
marine algae
in both
Marine algae for its naturally occurring minerals such as magnesium & calcium
eggshells
in calcium
Upcycled eggshells for their naturally occurring calcium
black pepper
in vitamin d
Black pepper fruit powder to naturally enhance nutrient absorption
rosemary
in vitamin d
Rosemary leaf extract to naturally preserve nutrients

artificial sweeteners, colors or flavors
magnesium stearate
silicon dioxide
gums
titanium dioxide
carrageenan
seed oils

the holistico story

We started with a simple observation: many people who care deeply about what they eat still take supplements made from isolated, lab-produced nutrients. We believe nutrients belong in the context nature puts them in, which is real food. So we set out to change the supplement industry.

Every Holistico formula focuses on one key vitamin or mineral, sourced from nutrient-dense whole foods. We then pair it with complementary foods that provide the nutrients it naturally travels with, because in nature, nutrients never show up alone. They come as part of a whole food, alongside their natural companions to support normal absorption and utilization in the body.*

Each formula stands alone or pairs with the rest of the line, and we're just getting started. Our goal is a whole-food lineup covering the essential vitamins and minerals, built the same way every time.

*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.

our quality standards

We don't cut corners. Every Holistico formula is made with traceable, whole food ingredients and no synthetic additives.

Every product is manufactured at an FDA-registered, cGMP-certified facility in Hauppauge, New York, where strict quality control and manufacturing consistency are non-negotiable. Every batch is tested by our manufacturer for potency, ingredient identity, microbial safety (including Salmonella, E. coli and Staph aureus) and heavy metals (mercury, lead, arsenic and cadmium) before it ever leaves the facility. Each batch is then independently third-party tested for heavy metals and microbial safety. Certificates of Analysis and third-party lab reports are available on request.

We're also big on transparency. Whole-food sourcing means natural variability. Slight differences in color or texture are normal and expected. That's what real food looks like.

we offer testing

Too many people choose supplements based on a hunch. We think you deserve better than that.

That's why we offer access to the Cellular Micronutrient Assay (CMA), a functional nutrient test that looks beyond standard bloodwork. Instead of measuring what's circulating in your blood at a single moment, it assesses how your immune cells respond to specific vitamins, minerals, and other nutrients. It’s designed to reflect longer-term nutrient status.

The results can help you and your practitioner identify potential nutrient insufficiencies, so you can make more informed choices about your supplements.

Gather the data. Spot your gaps. Choose whole-food nutrition.

This test is not intended to diagnose or treat any medical condition.

A woman resting on a bed reading a newspaper headlined Whole Food Supplements — made by a nutritionist who reads labels for a living

founder

meet the founder

hi, it's Katie!

I'm a Registered Holistic Nutritionist, Functional Diagnostic Nutrition Practitioner, and the person behind Holistico.

My interest in nutrition didn't start in a classroom. It started with my own body. Navigating nutrient imbalances, skin issues, digestive problems, and hormonal challenges pushed me to dig deeper than conventional advice was taking me. Eventually I stopped chasing symptoms and started looking at the full picture: whole foods, functional nutrient testing, lifestyle practices, and root causes.

After years of working with clients, a pattern became hard to ignore. The people most committed to eating well were still taking supplements built on synthetic, isolated nutrients, with unnecessary fillers.

That's what led me to build Holistico.

Every formula we make is rooted in one belief: nutrients belong in their food form, alongside their natural cofactors with no artificial fillers. Just the way nature intended.

Katie McKersie Registered Holistic Nutritionist, Functional Diagnostic Nutrition Practitioner

Who is behind Holistico?

Katie McKersie, a Registered Holistic Nutritionist and Functional Diagnostic Nutrition Practitioner. Her interest in nutrition and supplements started with her own health struggles. When she couldn't find any whole food supplements that were actually made from bioavailable food sources and in meaningful doses, she decided to make them herself.

Why are there only two products?

Because all good things take time. High quality whole food supplements formulated the right way isn't a quick process but we are currently working on a whole food iron, whole food vitamin c and whole food magnesium. Join our email list to get notified when these launch.

What does Holistico actually mean by whole food?

Many supplements use nutrients that were synthetically created in a laboratory and are not derived from any food source. We do it differently: each vitamin and mineral in our formulas comes from a whole food ingredient. For example, Vitamin D3 comes from lichen, and calcium comes from eggshell and marine algae. Curious why whole food matters? Read about the benefits of whole food supplements.

Where are the supplements made?

At an FDA-registered, cGMP-certified facility in Hauppauge, New York, where they're manufactured, encapsulated and tested. Every batch is also independently third-party tested for heavy metals and microbial safety. Orders ship from a fulfillment center in Lakewood, New Jersey.

Is Holistico a US company?

The supplements are manufactured in Hauppauge, New York, and they ship from a fulfillment center in Lakewood, New Jersey. Holistico ships within the United States only at this time, so if you are outside the US we cannot currently deliver to you. However, we are actively expanding. Join our email list to get notified when we launch in your country.

What testing do the products go through?

Every batch is tested by our manufacturer for potency, ingredient identity, microbial safety and heavy metals, then independently third-party tested for heavy metals and microbial safety. Certificates of Analysis and third-party lab reports are available on request.

Are the products certified organic or non-GMO?

As a small brand, we've chosen to invest in top-quality ingredients over costly certifications, and organic standards still allow some pesticides anyway. Instead, we're transparent about where every ingredient comes from (for example, our K2 is fermented from non-GMO chickpeas, our lichen is wild-harvested etc.), and each product page breaks down every ingredient.

How do I get in touch?

Head to our contact page, and Katie will answer you personally within 24-48 business hours. For an even faster answer to most questions, check out our help center.