My evenings have completely changed
I used to be useless after 7pm. Now I have energy into the evenings and actually enjoy time with my family rather than just surviving until bedtime. Stack has genuinely changed my quality of life.
Nour M.
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Herb475mg
Elderberry
IMMUNE DEFENSE & ANTIOXIDANT SHIELD
Dairy freeGluten freeSoy freeGMO free
$15.99/mo
30-day supply
Key Benefits
1
Strengthens immune defense against colds and infections
2
Supports immune defense during cold and flu season
3
Promotes upper respiratory health
4
Supports healthy inflammatory response
Recommended Dose
475mg
Take one 375mg capsule daily for ongoing immune support. During cold and flu season or at the first sign of symptoms, some people increase to twice daily for short periods. Take with food for best absorption.
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3rd Party Tested
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Doctor Formulated
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cGMP Certified
The Details
Why you'll love it
Elderberry has been used as a folk remedy for centuries, but it's the modern clinical research that's truly compelling. Multiple randomized controlled trials have shown that elderberry supplementation can reduce the duration and severity of cold and flu symptoms — in some studies by as much as 3-4 days.
The mechanism is elegant: elderberry's anthocyanins (the same pigments that give it that deep purple color) have been shown to inhibit viral replication by preventing viruses from attaching to and entering host cells. They also stimulate the production of cytokines — signaling molecules that coordinate your immune system's response to infection.
Beyond acute immune support, elderberry delivers a concentrated dose of antioxidants that rival blueberries and acai. These polyphenols support healthy inflammatory response, cardiovascular health, and cellular protection year-round. It's the supplement to reach for when everyone around you is getting sick, and to keep taking for ongoing immune resilience.
Research
Clinical Evidence
Key studies supporting Elderberry, from peer-reviewed journals.
1
Elderberry shortened flu recovery by 4 days vs placebo
Randomized study of the efficacy and safety of oral elderberry extract in the treatment of influenza A and B virus infections — 2004
Study titles are simplified for readability. Provided for informational purposes — not medical advice.
Transparency
What's Inside
Third-Party Tested
Every batch is independently tested by ISO-17025 accredited labs for purity, potency, and contaminants.
Doctor Formulated
Designed by healthcare professionals using evidence-based research and clinical expertise.
cGMP Certified
Manufactured in cGMP & UL certified, FDA-registered facilities with a flawless inspection record.
Important Information
Not suitable for
- autoimmune condition
Those with autoimmune conditions should consult their healthcare provider, as elderberry stimulates immune activity.
As with any natural health product, consult your healthcare practitioner. Store in a cool, dry place. Keep out of reach of children. Discontinue use immediately if you experience an adverse event.
What people say
changed my whole routine tbh
used to take like 5 different supplements every morning and always forgot at least two of them. now i take one stack pack and that's it. so much simpler. and the results are actually better. wild.
Hazel B.
The value proposition is actually excellent
I calculated what I was spending on separate supplements, gym supplements, and energy drinks before Stack.
Tim A.
Simple, smart, and it actually works
The packaging is some of the nicest I've seen in wellness. But beyond aesthetics, the product delivers. My energy throughout the day is more stable and I'm recovering faster from workouts. I was genuinely skeptical.
Ashley N.
The inflammation reduction has been significant
I suffer from low-grade chronic inflammation and it affects everything - energy, mood, joint comfort. Stack's personalized formula has noticeably reduced these symptoms over three months. The targeted approach is clearly more effective than generic options.
Eric T.
My husband noticed before I did
About six weeks in my husband said I seemed more like myself - more energy in the evenings, less irritable, sleeping better. I hadn't even consciously registered how much had changed until he said it.
Amara S.
Personalized for you
Not sure if Elderberry is right for you?
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