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D MAX

D MAX

High-potency Vitamin D3 — 5,000 IU per capsule.

$23.95
$23.95
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D MAX Vitamin D3 is a dietary supplement formulated to support healthy calcium and phosphorus absorption, which are essential for maintaining strong bones and proper bone mineralization. D MAX also supports a healthy immune system.

Each bottle contains 250 capsules designed to provide a convenient daily source of vitamin D3, a nutrient commonly associated with supporting bone health and overall wellness.

DETAILS & BENEFITS

  • 5,000 IU Vitamin D3 per capsule — high-potency formula
  • Supports calcium absorption and bone mineralization
  • Supports immune system function
  • Supports mood, energy, and cognitive health
  • 250 capsules per bottle — over 8 months supply
  • Non-GMO

INGREDIENTS & SUPPLEMENT FACTS

Vitamin D3 (Cholecalciferol) — 5,000 IU (125mcg) per capsule

250 capsules per bottle

HOW TO USE

Take 1 capsule daily with a meal containing fat for optimal absorption. Best paired with vK2 Vitamin K2 for proper calcium metabolism.

SHIPPING & RETURNS

Free shipping in the US on orders over $99.

Orders ship within 1-2 business days via USPS.

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Benefits

✓ Supports calcium absorption and bone mineralization

✓ Strengthens immune system defense

✓ Supports mood, energy, and cognitive health

✓ High-potency 5,000 IU per capsule

✓ 250 capsules per bottle — over 8 months supply

✓ Best paired with vK2 Vitamin K2 for proper calcium metabolism

Maximum D. Maximum You.

Maximum D. Maximum You.

✦ Non-GMO Sourcing ✦ 3rd Party Lab Tested ✦ 24/7 Support ✦ 5,000 IU Per Capsule ✦ Made in USA ✦ Trusted Since 2001 ✦ Non-GMO Sourcing ✦ 3rd Party Lab Tested ✦ 24/7 Support ✦ 5,000 IU Per Capsule ✦ Made in USA ✦ Trusted Since 2001

The Science Behind D Max

High-potency Vitamin D3 — the sunshine vitamin your body craves.

High Potency 5,000 IU

Each capsule delivers 5,000 IU (125mcg) of Vitamin D3 — the most bioavailable form of the sunshine vitamin for optimal absorption.

Bone & Calcium Support

Vitamin D3 is essential for calcium absorption and bone mineralization — without adequate D3, your body can only absorb 10-15% of dietary calcium.

Immune Defense

Vitamin D3 activates immune cells and supports your body's natural defense systems — critical for year-round immune resilience.

Best Paired with K2

D3 and K2 work synergistically — D3 helps absorb calcium while K2 directs it to bones and teeth, keeping it out of arteries.

What our customers say

★★★★★

“I started taking D Max after realizing I wasn't getting nearly enough Vitamin D from my diet alone. 5,000 IU per capsule is the perfect dose and 250 capsules means I don't have to reorder for months. Great value.'ve been taking it for a month and already notice a real difference. Quality you can trust.”

— James P., Austin, TX

★★★★★

“I pair D Max with vK2 every morning. Simple routine, clean ingredients, and I've noticed my overall energy and mood have been more consistent since I started. Exactly what I was looking for.”

— Richard L.

★★★★★

“I've gone through a lot of Vitamin D supplements over the years. D Max stands out for its purity and potency. 5,000 IU in a clean capsule with nothing else added. I trust this brand completely.”

— Carol S., Portland, OR

Frequently Asked Questions

Why 5,000 IU? Is that safe?

Yes. 5,000 IU is a widely recommended daily dose for adults with vitamin D deficiency or insufficiency — which includes an estimated 42% of American adults. The Endocrine Society considers up to 10,000 IU daily safe for most adults. That said, we always recommend having your vitamin D levels tested and consulting your healthcare provider to determine the right dose for you.

Why should I take D3 with K2?

Vitamin D3 increases calcium absorption, but it doesn't control where that calcium goes. Vitamin K2 activates Vitamin K-dependent proteins (VKDPs) that direct calcium into your bones and teeth — and away from your arteries and soft tissues. Taking D3 without K2 means your body absorbs more calcium but may deposit it in the wrong places. We recommend pairing D Max with our vK2 Vitamin K2 supplement for complete calcium metabolism support.

How do I know if I'm deficient in Vitamin D?

Common signs of vitamin D deficiency include fatigue, frequent illness, bone and back pain, low mood, and slow wound healing. However, many people are deficient without obvious symptoms. A simple 25-hydroxy vitamin D blood test from your doctor can confirm your levels. Optimal blood levels are generally considered to be between 40–60 ng/mL.

Can I take this year-round?

Yes. While your body produces vitamin D from sun exposure, most adults don't get enough — especially during fall and winter, if you live above the 37th parallel, work indoors, or wear sunscreen regularly. Year-round supplementation helps maintain consistent, optimal vitamin D levels regardless of season or lifestyle.

Is this safe to take with my current medications?

D Max contains a single, well-studied ingredient — Vitamin D3 (cholecalciferol) — in a clean gelatin capsule with no artificial additives. However, vitamin D can interact with certain medications including steroids, weight-loss drugs, and cholesterol-lowering medications. We always recommend discussing any new supplement with your doctor, especially if you're taking prescription medications.

What if it doesn't work for me?

Contact us if you're not satisfied and we'll make it right. We've been standing behind our products since day one.