Core Plus Bundle

30 day supply

The Ultimate Daily Stack for Health and Longevity

Core Plus Bundle

30 day supply

The Ultimate Daily Stack for Health and Longevity

A 30-day bundle of five products that work together to close the nutrient gap and help you perform and feel your best.  

  • Supercharge your health with bioidentical nutrients that are easy to absorb

  • Exceed RDAs for essential nutrients so you can thrive, not just survive

  • Save money and time with a comprehensive daily stack that covers your bases

  • Prevent and reverse chronic health problems so you can live your best life

Purchase type options
Delivers every

Fast Shipping with Subscription

60-day Returns


Overcome Fatigue and Sluggishness

From all-day energy to improved exercise performance to higher libido, you'll feel more youthful and alive again.


Boost Cognitive Function and Elevate Mood

Experience sharper focus and attention, become more productive, and feel happier and more relaxed.


Protect Cellular Health and Extend Longevity

Nourish and protect your cells and tissues with key vitamins, minerals, and phytonutrients.


Go From Surviving to Thriving

Get the nutrients you need to feel and perform your best and live the life you want to live.

Core Plus Bundle Includes

Bio-Avail Multi

Bio-Avail Multi

A powerful blend of vitamins, minerals, and phytonutrients designed to support your nutritional needs and promo well-being.

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Bio-Avail Organ

Bio-Avail Organ

A blend of bovine organs—liver, heart, kidney, pancreas, and spleen—sourced from 100% grass-fed, grass-finished cattle.

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Bio-Avail Myco

Bio-Avail Myco

Full-spectrum blend of eight organic mushroom extracts that promote deep focus, sustained energy, and a sense of calm.

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Bio-Avail Mag

Bio-Avail Mag

Contains 300 mg of highly absorbable magnesium to close the gap between average US intake and the amount we need for optimal

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Bio-Avail E+

Bio-Avail E+

Contains 100% delta- and gamma-tocotrienols for optimal cardiovascular, bone, immune, and brain health.

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Real Stories of Health and Happiness

  • "I have taken Adapt Naturals Core Plus Bundle for a month and have already noticed several improvements."

    —Annie, Verified
  • “Taking the Core Plus Bundle has made me feel confident that I am meeting all my nutritional needs.”

    —Faith, Verified
  • “I have more energy, I’m sleeping better and I have much less aches in my joints.”

    —Diane, Verified

Discover the Core Plus Advantage

Natural, whole-food
Synthetic, fillers
Maximally absorbable
Low absorption
Health Focus
Addresses root causes
Addresses symptoms
Clinical Background
15 years in-clinic
Not typically
Supports soil health
Disregards soil health
Single-use plastics
Functional Medicine expert

Meet Chris Kresser, your
Trusted Health & Wellness Guide

Founder & Functional Medicine Clinician

  • Globally renowned expert with over 15 years of experience
  • Dedicated to helping people improve their health by addressing modern challenges and nutrient gaps

Author & Educator

  • Treated thousands of patients
  • Trained more than 2,000 healthcare professionals
  • Gained valuable insights into functional medicine and nutrition

Why choose Core Plus Bundle?

Our modern diets often fall short of providing the optimal amounts of essential nutrients our bodies need to function at their best. With the Core Plus Bundle, you can overcome nutrient deficiency and support your overall health and well-being. We've done the research, so you don't have to!

Formulated to Replicate Optimal Ancestral Diets

Changes in dietary patterns, declining soil quality, and a growing toxic burden have made it increasingly difficult to obtain adequate nutrients from our daily food intake. The Core Plus bundle is designed to address these challenges by providing a comprehensive blend of essential vitamins, minerals, and phytonutrients that closely resemble those found in an ancestral, whole-foods diet.

Harness Years of In-Clinic Experience and Ancestral Wisdom

Backed by Adapt Naturals' 15 years of in-clinic experience and dedicated to creating supplements that make a meaningful difference, Bio-Avail Omega+ combines cutting-edge research with insights from ancestral wisdom to bring you a premium-quality supplement.

Signs You Need the Core Plus Bundle

Low energy levels or chronic fatigue

A weakened immune system or frequent illnesses

Brain fog, poor memory, trouble concentrating

Skin problems, brittle hair and nails

Difficulty falling or staying asleep

Nutrient deficiencies due to poor diet or lifestyle

What You'll Feel Using the Core Plus Bundle

  • Increased energy levels and vitality

  • Improved mental clarity and cognitive function

  • Deeper and more restorative sleep

  • Enhanced immune system support and resilience

  • Correction of nutrient deficiencies for improved overall health

  • Greater endurance and support for an active lifestyle

  • Promotion of overall well-being and healthy aging

Core Plus Bundle

Unlock Your Optimal Health

Upgrade Your Wellness with Core Plus—Lifelong Health, Simplified

Get Healthier & Happier - Try Now

Good For You—And the Planet

You can’t have healthy humans without a healthy planet. That’s why Adapt Naturals is working toward zero plastic and landfill waste in our supply chain.

Starting in the fall of 2023, we’re transitioning our packaging to 100% compostable, stand-up pouches. They’re made from cellulose (wood pulp) and are free of PLA, BPA, PFAS, phthalates, and other harmful chemicals. They’re printed with non-toxic, compostable ink. The pouches are so clean and biodegradable that you can put them in your backyard or curbside compost bin! 

Our sustainable packaging initiative will prevent over 120,000 plastic bottles from ending up in a landfill or the oceans. Thank you for being part of the solution and helping Adapt Naturals protect the beauty of our natural environment!

Your Questions Answered

Yes, all products in the Core Plus are made without gluten or GMOs.

You can learn more about each of the individual products on their respective pages:

- Bio-Avail Multi

- Bio-Avail Organ

- Bio-Avail Myco

- Bio-Avail Mag

- Bio-Avail E+

Refund Policy:

We stand behind the quality of our products, and we want you to be completely satisfied with your order. 

That’s why we offer a 60-day, 100% money-back guarantee on all purchases. If you’re unhappy with your order for any reason, simply contact us, and we’ll give you a full refund with no questions asked. 

Late or missing refunds

Please allow 5-10 business days for the refund to process and reflect in your account. If you haven’t received your refund after 10 days, please contact us at

3-5 business days on average

We currently ship to the United States only.

Customer Reviews

Based on 154 reviews
Currently trying them out, noticed these changes

I switched to Adapt Naturals to see if I notice any difference from my former protocol. I was taking Vitamin Code for men from Garden of Life. The biggest difference I notice since I switched is my bowel movements are now much more regular. I suspect it's likely due to the increase in Magnesium, but as someone who has struggled with irregularity for more than a decade, it is amazing to no longer feel bloated so often. I don't notice any difference in energy or mental acuity. My sleep seems to be better, but I would not say it's super noticeable. My skin seems to be more clear and I'm not getting pimples as often as before. So far I am mostly pleased. I plan to continue to assess things over the next few months.

Hi Lancelot, Thank you for supporting Adapt Naturals. Its our pleasuring hearing the noticeable difference you have experienced in your bowel movements, sleep and skin. We appreciate your sharing your experience with us. All the best!


Too many pills to take


I’ve been taking these supplements for four months and, while my energy level is better, there are ongoing non-acute symptoms that have not resolved. I’ve reached out to Chris and the responses indicate he wouldn’t be able to provide tailor-made recommendations. If the symptoms don’t resolve soon, I may stop taking them. I understand supplementation isn’t a cure-all but I was hoping for better results.

Anthony Quill
Our Only Supplements

The Adapt Naturals Core Plus Bundle are the only vitamins/supplements that we take. We love that they are based on natural ingredients and are formulated to fill in nutritional gaps in the standard American diet.

Hi Anthony. We are happy you are loving our core plus bundle and you are getting all the nutrients you need. Thank you for reviewing this product!

I’m confused

I sent in a substantial order then on Saturday I got a text saying YOU GUYS had problems and I needed to reorder.

No way to respond to you but reorder. I’m afraid this may be a smoke and mirrors deal.

Hi Richard, our system encountered an error on Friday that didn't allow any orders to process. I see your order has shipped. If you don't receive your order in the next few days, please reach out to and we'll be sure to issue a replacement or refund. Thanks for your support!