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SMART VITAMIN D3 SUPPLEMENT FACTS
Bottle of Smart Vitamin D3 on a wooden block against a bright yellow background, with a single capsule placed in front of the block.
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Woman holding a bottle of Smart Vitamin D3 in a relaxed, natural lifestyle setting with soft lighting.
Bottle of Smart vitamin D3
Profile of a woman holding a capsule close to her face against a bright yellow background.
SMART VITAMIN D3 SUPPLEMENT FACTS
Bottle of Smart Vitamin D3 on a wooden block against a bright yellow background, with a single capsule placed in front of the block.
Blue supplement bottle with a white cap and a Supplement Facts label
Blue supplement bottle with a white cap and suggested usage wording
Woman holding a bottle of Smart Vitamin D3 in a relaxed, natural lifestyle setting with soft lighting.

Smart Vitamin D3™

$19.96

Support a happy mood and emotional well-being.*

6 Pack Subscription $89.82 - every 6 months 6 Bottles Free Shipping
save 40% $149.70 $14.97/mo
3 Pack Subscription $50.91 - every 3 months 3 Bottles Free Shipping
save 32% $74.85 $16.97/mo
1 Pack Subscription $19.96 - every 1 month 1 Bottle Free Shipping
save 20% $24.95 $19.96/mo
One Time Purchase $24.95 + Shipping
$24.95

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The “Super Vitamin”

Key Ingredients

PhytoD3™ Vegan Cholecalciferol

We use PhytoD3™ to deliver a plant-based, vegan source of cholecalciferol, the D3 form of Vitamin D, in a strong 5,000 IU serving. Each capsule provides 125 mcg of Vitamin D3 to support cognitive health, healthy immune function, and overall wellness.* Unlike most vitamin D supplements, this clinically-tested PhytoD3™ and pairs with turmeric in Smart Vitamin D3 for better absorption and bioavailability.*

Turmeric Extract (Curcuma longa) Root — 95% Curcuminoids

We use a highly concentrated Turmeric Extract standardized to 95% curcuminoids, delivering 200 mg in every capsule. Curcuminoids are the primary bioactive compounds in turmeric and have been studied for their effects on cognitive performance, healthy inflammatory response, and oxidative stress.* Human research suggests curcumin may support several areas of cognition, with working memory showing particularly promising results.* This concentrated extract adds targeted cognitive and antioxidant support to the foundational benefits of Vitamin D3.*

Third-party testing

Open Source. Full Transparency.

Every batch is third-party tested to ensure purity, potency, and quality.

  • Verified ingredients and dosages—exactly as listed (no proprietary blends)
  • Tested for heavy metals, mold, yeast, and other harmful bacteria
  • Fully traceable ingredients from supplier to shelf
  • No artificial fillers or unnecessary additives

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Foundation-level cognitive performance*

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Build A Better Brain*

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Plant-Based Omega-3 DHA for Brain Health*

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Move Better. Think Better. Feel Better.*

Bottle of Smart vitamin D3

Smart Vitamin D3™

$19.96
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Smart Vitamin D3™ Benefits

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Supports a Positive Mood*

Smart Vitamin D3™ provides clinically-tested PhytoD3™ to support a happy mood and emotional well-being.*
DBF_icon3_2048x2048.jpg

Promotes Long-Term Brain Health*

Vitamin D receptors are found throughout key regions of the brain, where it supports processes involved in memory, cognition, and long-term brain health.*
lotus flower

May Help Improve Immune Function*

Vitamin D3 and turmeric may help regulate immune cell activity, supporting your body’s normal defenses for a healthier immune response.*

The Science Behind Smart Vitamin D3™ with Turmeric

Smart Vitamin D3™ uses PhytoD3™, a plant-based, vegan source of cholecalciferol… the D3 form of Vitamin D. Since these receptors are found throughout the brain, supplementing such a scientifically-backed form of this vitamin supports cellular processes involved in healthy cognition, neuronal function, and long-term brain health.*

  • 5,000 IU of Premium, Plant-Based PhytoD3™*
  • Turmeric May Help Your Body Get More From Vitamin D3*
  • May Help Defend the Brain From Everyday Oxidative Stress*
Profile of a woman holding a capsule close to her face against a bright yellow background.
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3D brain

Scientifically Formulated Ingredients

PhytoD3™ Vegan Cholecalciferol

We use PhytoD3™ to deliver a plant-based, vegan source of cholecalciferol, the D3 form of Vitamin D, in a strong 5,000 IU serving.

Turmeric Extract (Curcuma longa) Root

Have been studied for their effects on cognitive performance, healthy inflammatory response, and oxidative stress.*

Supplement Facts Show All 2 Show Less

PhytoD3™ Vegan Cholecalciferol

We use PhytoD3™ to deliver a plant-based, vegan source of cholecalciferol, the D3 form of Vitamin D, in a strong 5,000 IU serving. Each capsule provides 125 mcg of Vitamin D3 to support cognitive health, healthy immune function, and overall wellness.* Unlike most vitamin D supplements, this clinically-tested PhytoD3™ and pairs with turmeric in Smart Vitamin D3 for better absorption and bioavailability.*

Turmeric Extract (Curcuma longa) Root

We use a highly concentrated Turmeric Extract standardized to 95% curcuminoids, delivering 200 mg in every capsule. Curcuminoids are the primary bioactive compounds in turmeric and have been studied for their effects on cognitive performance, healthy inflammatory response, and oxidative stress.* Human research suggests curcumin may support several areas of cognition, with working memory showing particularly promising results.* This concentrated extract adds targeted cognitive and antioxidant support to the foundational benefits of Vitamin D3.*

SMART VITAMIN D3 SUPPLEMENT FACTS
How To Use

x60 servings

Each bottle of Natural Stacks Smart Vitamin D3 contains 60 servings. Recommended serving is 1 capsule per day.

1 capsule/day

Take a serving of 1 capsule daily or as advised by your healthcare provider.

Warning: If you are pregnant, nursing, or taking medications, consult a healthcare practitioner before use.


Results You Can Feel. Lab Tests You Can See.

View 3rd Party Test results for The Current Batch


Natural Stacks “Open Source” transparency program provides ingredient traceability and 3rd party lab test results for every batch. It’s powered by blockchain technology and secured by HealthLoq™ on transparent, tamperproof, trusted data.

Learn More About Our Commitment to Transparency

Certified Open Source - Trademark. Full Label Disclosure
Warning: If you are pregnant, nursing, or taking medications, consult a healthcare practitioner before use.

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