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The Real Big D

Mission driven to fix the silent vitamin D epidemic, D3X is a premium supplement delivering 2000 IU of Vitamin D3 + K2 in organic olive oil. A science-backed daily upgrade for a better you.

90-day money back guarantee
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"We estimate that vitamin D deficiency is the most common medical condition in the world."
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Dr Michael F. Holick
MD, PhD, Boston University (2010)

Your Health Upgrade Starts Here — D3X For Under $1/day.

Fight the silent vitamin D deficiency epidemic with D3X. Your Health upgrade, – One drop at a time.

90-day money back guarantee

What is D3X?

D3X is a liquid Vitamin D3 + K2 supplement designed for daily use. Each serving provides 2,000 IU of Vitamin D3 (cholecalciferol) paired with vitamin K2 (as MK-7) in an organic olive oil base. Why Drops? Because liquid D3 in a healthy fat-based carrier is absorbed more efficiently by your body than dry pills. D3X is flavorless and effortless. Add a serving to your morning coffee, smoothie, or place it directly on your tongue. It’s an instant daily upgrade that fits even the busiest routine.

Premium Drops
Premium Drops
Organic Olive Oil
Organic Olive Oil
Science-backed
Science-backed
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The Silent Vitamin D Epidemic

Vitamin D deficiency isn’t just your problem. It’s a global epidemic hiding in plain sight. We call it “silent” because you won’t know you’re deficient until the consequences catch up to you. Here’s the reality:

  • Global Deficiency: About 1 billion people worldwide have inadequate vitamin D levels, making it one of the most widespread nutrient deficiencies on the planet.
  • Young Men Affected: According to the National Institutes of Health (NIH), more than 65% of young adults in their 20s have low or subpar vitamin D levels—even when it's sunny out.

We’ve created D3X to change these stats. We’re shining a light on this under-the-radar health crisis and giving you a simple tool to take care of yourself.

OUR MISSION
Vitamin D Status
Vitamin D Deficient Vitamin D Insufficient Vitamin D Sufficient

What The Experts Are Saying

Dr. Michael Holick 2011
Dr. Michael Holick 2011

How To Take D3X

Add it to your coffee
Add it to your coffee
Blend into smoothies or shakes
Blend into smoothies or shakes
Take it straight
Take it straight

Benefits of D3X

D3X supports what matters most to you. We want you to feel and perform your best every day.

  • Supports healthy energy and mood – Vitamin D is linked to positive mood and vitality, especially if levels were low.
  • Aids strength & recovery – Vitamin D supports muscle performance, balance, and post-workout recovery. Helping you bounce back faster.
  • Supports immunity – Helps keep your immune defenses in top shape, so you’re less likely to be sidelined.
  • Keeps you sharp – Emerging research links vitamin D with brain health, cognitive function, and focus.
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What We Care About

(Mental Health)

At D3X, we care about your mental well-being as much as your physical health. We know nutrition isn’t a cure-all for mental health, and we’ll never claim a supplement will magically chase away the blues. But we will share the science: maintaining healthy vitamin D levels is linked to better mood and mental health outcomes.

75% of people with depression have low vitamin D levels in some studies. That doesn’t mean Vitamin D is a cure for depression (far from it), but it’s a factor we can safely address.
We’re committed to improving the mental health crisis affecting young men in the US with vitamin D and beyond. This mission goes beyond the bottle. We’re exploring ways to reinvest in awareness campaigns, community resources, and initiatives that support men’s mental well-being. Because keeping vitamin D levels in a healthy range is just one piece of the bigger picture: helping young men feel stronger, clearer, and more resilient every day. Sometimes, a little daily drop is more than a supplement, it’s a step forward towards a sunnier outlook.
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Frequently Asked Questions

  1. How much Vitamin D should I take daily?

    For most healthy adults, the recommended minimum is 600 IU (15 µg) per day. However, many experts suggest that 1,500–2,000 IU daily may be needed to reach optimal blood levels for health. D3X provides 2,000 IU per serving, which is well within safe limits (the general safe upper limit is 4,000 IU/day for adults). Always consider individual needs and consult your healthcare provider if unsure.

  2. Why combine D3 with K2?

    For most healthy adults, the recommended minimum is 600 IU (15 µg) per day. However, many experts suggest that 1,500–2,000 IU daily may be needed to reach optimal blood levels for health. D3X provides 2,000 IU per serving, which is well within safe limits (the general safe upper limit is 4,000 IU/day for adults). Always consider individual needs and consult your healthcare provider if unsure.

  3. How fast will I feel the difference?

    For most healthy adults, the recommended minimum is 600 IU (15 µg) per day. However, many experts suggest that 1,500–2,000 IU daily may be needed to reach optimal blood levels for health. D3X provides 2,000 IU per serving, which is well within safe limits (the general safe upper limit is 4,000 IU/day for adults). Always consider individual needs and consult your healthcare provider if unsure.

  4. Is D3X safe with coffee or protein shakes?

    For most healthy adults, the recommended minimum is 600 IU (15 µg) per day. However, many experts suggest that 1,500–2,000 IU daily may be needed to reach optimal blood levels for health. D3X provides 2,000 IU per serving, which is well within safe limits (the general safe upper limit is 4,000 IU/day for adults). Always consider individual needs and consult your healthcare provider if unsure.

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