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Immune Defense · 11 formulas
Immune Defense
Beta glucan, Vitamin D3+K2, elderberry, zinc, and the daily nutrients that train both branches of your immune system — innate and adaptive.
Curated by
Dr. Daniel Schrock, DC — 40 years of clinical practice
11 Products
Proactive optimization
A note from Dr. Schrock
"Doctor, why does every cold knock me out for two weeks?"
A healthy immune system isn't loud — it just quietly handles what comes at it. The patients who tell me they "catch everything that's going around" almost always have one or more foundational nutrients running low: Vitamin D, zinc, selenium, or a depleted microbiome from years of antibiotics.
This collection covers both halves of immunity. Innate immunity — your first responders — is supported by Beta-1,3-Glucan, Vitamin D3+K2, and zinc. Adaptive immunity — the targeted memory response — is supported by selenium, Vitamin C, and a healthy gut microbiome (70% of your immune cells live in the gut wall). Elderberry and astragalus give acute support when something's going around.
What's inside
These products support normal immune function. They are not intended to diagnose, treat, cure, or prevent any disease. Always consult your healthcare provider before beginning any supplement regimen.
Practitioner-recommended
Immune Defense — Daily Foundation
Beta-1,3-Glucan, Vitamin D3+K2, Zinc, and Selenium in one daily formula. The foundation for patients who want to stop catching every bug that walks in the door.
- Proactive optimization, not just reactive support
- Cellular-level activation via Beta Glucan + acute-response layer
- Daily airborne antimicrobial blend (Germ Fighter)
- Multi-pathway approach — what your immune system actually needs is intelligent modulation
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20% OffDr. Schrock's High-Potency Vitamin C
High-potency Vitamin C for immune, collagen & antioxidant defense.
$19.99
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17% OffDr. Schrock's Liver Cleanse & Detox Support
Milk Thistle + Dandelion + NAC for liver detox support.
$36.99
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16% OffDr. Schrock's Advanced Immune Defense Formula
Chlorella, Quercetin & Zinc Picolinate for advanced immune defense.
$45.99
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14% OffDr. Schrock's Organic Spirulina Daily Superfood
Organic Spirulina 550mg — complete protein, B12, iron & phycocyanin.
$17.99
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17% OffDr. Schrock's Germ Fighter Protective Blend
Clove, Cinnamon, Eucalyptus, Rosemary & Lemon — seasonal immune blend.
$36.99
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15% OffDr. Schrock's Beta Glucan Immune Optimizer
575mg Beta Glucan for intelligent immune modulation, not just stimulation.
$54.99
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15% OffDr. Schrock's High-Potency Turmeric Root Formula
Whole Turmeric Root 575mg — full-spectrum curcuminoid anti-inflammatory.
$33.99
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25% OffImmune Defense Protocol — Dr. Schrock's Bundle
4-formula immune optimization protocol — proactive cellular immunity. Save $45.97.
$134.99
Understanding immunity
The four layers of immune defense.
Strong immunity is layered — every layer needs different raw materials. Most patients are missing nutrients on at least two layers.
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Innate (first responders)
Macrophages and natural killer cells handle threats before your body knows what they are. Beta-1,3-Glucan primes them; Vitamin D unlocks them.
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Adaptive (targeted memory)
T-cells and B-cells build precise, lasting immunity. Zinc and selenium are non-negotiable cofactors here.
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Mucosal barrier
Your nose, throat, and gut lining are the first physical defense. Vitamin A, zinc, and a healthy microbiome maintain those barriers.
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Antioxidant defense
Inflammation has to be cleaned up. Vitamin C, glutathione, and quercetin keep the immune response from damaging healthy tissue.
Save with the protocol.
Immune Resilience Protocol — 4 formulas, $13 off.
The complete daily defense stack: Immune Defense Foundation, Vitamin D3+K2, Liposomal Vitamin C, and Elderberry for acute support. Built to keep you in the fight all season.
Bundle price
$64.95
$77.85separate
Dr. Daniel Schrock
Doctor of Chiropractic | Licensed since 1990
Why this collection exists
"Don't wait until you're sick to think about your immune system."
The mistake I see over and over: people only think about immunity in November when something is going around. By then, you're playing catch-up. The patients who stay well year-round are the ones running their D3, zinc, and beta glucan as foundational, not seasonal.
Get your Vitamin D level tested — most patients I tested ran below 40 ng/mL, well under optimal. Add a daily beta glucan or immune blend. Keep elderberry and zinc on the shelf for the first sign of symptoms.
Real patients, real results
4.9 avg rating across this collection
From verified buyers in this collection
4.3/5 Trustpilot
“Morning stiffness gone.”
“30 days in and I can grip a coffee cup at 6am without warming up first. Subscribing forever.”
Margaret S.
4.3/5 Trustpilot
“My athletes swear by it.”
“I’m a strength coach. I’ve put 20+ clients on Inflam-Help Daily — recovery times noticeably faster across the board.”
Tony L.
Shop by ingredient
The immune-supporting ingredients behind these formulas
Common questions
Immune defense — common questions.
Should I take immune support year-round or only when I'm sick?
Both — but the daily foundation matters more than the acute response. Vitamin D, zinc, and beta glucan should be in your routine all year. Elderberry, extra Vitamin C, and additional zinc are what you reach for at the first sign of symptoms.
How much Vitamin D should I take?
Most adults need 2,000–5,000 IU daily to maintain a healthy blood level. If you can get a 25(OH)D blood test, aim for 50–80 ng/mL. Always pair D3 with K2 — they work as a team to direct calcium correctly.
Is elderberry safe to take alongside the flu shot or other vaccines?
Yes — elderberry supports normal immune function, it doesn't suppress it. If you're immunocompromised or on immunosuppressants, talk to your physician first. The same goes for autoimmune conditions, where any immune-stimulating product needs medical sign-off.
What's the difference between innate and adaptive immunity?
Innate is your immediate, non-specific response — macrophages, natural killer cells, inflammation. Adaptive is your targeted, learned response — antibodies and memory T-cells that recognize specific threats. Beta glucan primarily supports innate; zinc and selenium are critical for adaptive.
Can I take zinc every day?
Yes, at sensible doses (15–30 mg daily). Higher doses (50+ mg) can deplete copper over time, so don't camp out at high doses long-term. For acute illness, short-term use of higher-dose zinc lozenges is fine.
Get the FreeYear-Round Immune Resilience Guide.
Dr. Schrock's daily foundation protocol plus the first-symptoms playbook — exactly what he kept his own family on for forty years.
No spam. No data selling. Unsubscribe any time. Dr. Schrock's promise.
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Free shipping
On every US order over $75
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60-day refund
No bottle return needed
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Doctor-formulated
40 years of practice
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Made in USA
GMP-certified facility
