Immune Support Stack

Four formulas chosen to support everyday immune resilience.*

Bought separately $115.96
Stack price, 4 formulas $91.95

You save $24.01 (20%) with the stack

Each formula arrives as its own bottle.

  • Manufactured in a US-based GMP facility
  • Real forms, real doses on the label
  • Free shipping over $100
  • Subscribe & save, cancel anytime

The details

How this stack works

About this stack

Everyday resilience is built from the inside: vitamin D status, a balanced gut and a normal inflammatory response. The Immune Support Stack brings together four formulas chosen to support immune function through seasonal changes, travel and busy stretches.*

What's inside

  • Vitamin K2 + D3: Vitamin D3 supports normal immune function*
  • Mushroom 10x: A ten-mushroom blend that supports immune balance*
  • Probiotic-40 with 40 Billion CFU: Supports the gut-immune connection*
  • Omega-3 Fish Oil: Supports a healthy inflammatory response*

How to take it

Each formula is taken as directed on its own label, most with a meal and a glass of water. Start with the two core products, add the rest once they feel routine, and give the stack a full 8 to 12 weeks. If you are pregnant, nursing, taking prescription medication or have a known medical condition, check with your healthcare provider before starting.

Rooted in nature. Proven by science. Every formula in this stack is manufactured in a US-based, FDA-registered, GMP-certified facility.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

What the research says

Immune Support Stack

Evidence tier: Emerging, for the immune-specific research

What it is: Four formulas chosen to support everyday immune resilience.

What the research shows: This stack has not been studied as a combination. Two of the four formulas have immune-specific research, both from single trials:

  • Mushroom 10x (Limited to Emerging, by ingredient): a 4-week study in 52 healthy adults found eating whole dried shiitake daily was associated with stronger immune-cell activity. The study used 5 to 10 g/day; this formula supplies 266 mg of shiitake. Research on its other mushrooms is early.
  • Probiotic-40 (Emerging): a placebo-controlled trial in 465 healthy, active adults tested one of this formula's four strains and found a result the researchers linked to immune support. A different probiotic combination in the same trial showed no benefit.
  • Vitamin K2 + D3 (Moderate-to-Strong): vitamin D is a nutrient the immune system needs to function normally. The research we cite for this formula is for bone density, not immune outcomes.
  • Omega-3 Fish Oil (Moderate-to-Strong, at studied amounts): the research we cite is for blood pressure within the normal range, not immune outcomes.

Typical study dose: Study amounts for each formula are listed on its own page. These describe what the studies used, not a recommended amount.

Dai X, et al. Journal of the American College of Nutrition, 2015. PMID: 25866155.

West NP, et al. Clinical Nutrition, 2014. DOI: 10.1016/j.clnu.2013.10.002.

Ma ML, et al. Frontiers in Public Health, 2022. PMC9403798.

Zhang X, et al. Journal of the American Heart Association, 2022. DOI: 10.1161/JAHA.121.025071.

Questions people ask
Can I take all 4 products together?
The stack is designed to be taken together, each product as directed on its own label. Most people split them between breakfast and dinner. If you take prescription medication or have a medical condition, review the stack with your healthcare provider first.
What if I already take one of these?
Keep the one you have and add the rest, or swap it for the Kikaboni version at your next reorder. Do not double up on the same ingredient. The product pages list the amount per serving so you can compare.
How is a stack priced?
A stack costs less than buying the same formulas one by one, and that saving is already in the stack price shown on this page. It goes in your cart as one item and arrives as its own bottles. Because the stack is already discounted, it does not also count toward the 3+ and 6+ formula savings, which apply to formulas bought individually.
Shipping & subscriptions

Each formula in the stack ships as its own bottle from a US-based facility within 1 to 2 business days. Free standard shipping on orders over $100. Subscribe & save is available on every formula and can be changed or cancelled from your account at any 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.

What's inside

Every formula in this stack, and why it's there

  1. 01 Vitamin K2 + D3 supplement bottle, front view, white label with gray cap, 60 capsules, 30 day supply

    Vitamin D3 supports normal immune function*

    Vitamin D3 with K2 as MK-7 and calcium, formulated to support strong bones and healthy calcium metabolism.

    • D3 Vitamin D3 (cholecalciferol) · 125 mcg (5,000 IU)
    • K2 Vitamin K2 (MK-7, menaquinone) · Included
    • Ca Calcium (as calcium carbonate) · 210 mg
    $25.99 Details
  2. 02 Mushroom 10x front view of white supplement bottle with gray cap, 60 capsules, teal label design.

    A ten-mushroom blend that supports immune balance*

    Ten mushrooms including reishi, cordyceps and lion's mane, formulated to support immune function and clarity.

    • Cor Cordyceps (Cordyceps sinensis) · 266 mg
    • Rei Reishi extract (Ganoderma lucidum) · 266 mg
    • Shi Shiitake extract (Lentinus edodes) · 266 mg
    $27.99 Details
  3. 03 Probiotic-40 with 40 Billion CFU, front view of white and gray supplement bottle, 60 capsules.

    40 billion CFU from four strains with bi-pass delivery, formulated to support digestive and immune health.

    • La Lactobacillus acidophilus (La-14) · In 40B CFU blend
    • Bl Bifidobacterium lactis (Bl-04) · In 40B CFU blend
    • Lp Lactobacillus plantarum (Lp-115) · In 40B CFU blend
    $29.99 Details
  4. 04 Omega-3 Fish Oil, front view of white and gray supplement bottle with teal label, 60 softgels, lemon flavor.

    Supports a healthy inflammatory response*

    720 mg omega-3 with EPA and DHA per softgel, formulated to support the heart and a healthy inflammatory response.

    • EPA Eicosapentaenoic acid · 432 mg
    • DHA Docosahexaenoic acid · 288 mg
    • Om3 Total omega-3 fatty acids · 720 mg
    $31.99 Details

Core formulas are the two we suggest starting with. Add the rest when you are ready.

Kikaboni Magnesium Glycinate, Probiotic-40 and Creatine in a shopping basket

Not sure where to start?

Build your stack in two minutes

Seven quick questions match you to one of nine stacks, filter for your diet and flag anything to check with a provider first.

  • 1 Nine goals.Pick what matters most right now.
  • 2 Your filters.Diet and safety questions shape what we suggest.
  • 3 One routine.A starter pair or the full stack, ready to add.
Take the quiz

No account needed. Takes about two minutes.