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Premium Vitamin D3 + K2 drops.
Your body requires proper Vitamin D levels to perform at its best. Yet most people don't get enough. D3X is here to fix that with a monthly dose that supports mood, sleep, focus, and physical performance with an easy daily habit.
- Addresses the most common deficiency in the U.S.
- Vitamin D3 (cholecalciferol) + Vitamin K2 (MK-7) + olive oil
- Designed to fit into daily life; add to your favorite drink or food.
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Morning Routine
“I add D3X to my yoghurt bowl each morning and it’s never been easier to get my Vitamin D”
11/14/2026
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Protein Shake Addition
“I put a few drops in my protein shake whenever I’m done working out. Highly recommend.”
12/4/2025
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Switched from gummies
“I switched from taking vitamin gummies to taking D3X. Don’t miss the sugar”
1/10/2026
Sleep
Mood
Physical performance
Focus
Step 1.
Add 1 ML to your beverage of choice, food, or just drop directly under your tongue
Add 1 ML to your beverage of choice, food, or just drop directly under your tongue
Step 2.
Take daily, same time each day is best for habit building
Take daily, same time each day is best for habit building
Step 3.
Best results come from consistency, reassess after about 8 to 12 weeks
Best results come from consistency, reassess after about 8 to 12 weeks
We only use three simple ingredients.
1. Vitamin D3
The star of D3X. It behaves more like a hormone than a typical vitamin and influences a wide range of processes in the body. We use D3 because it's the form your body naturally makes from sunlight and it's generally more effective than D2 at raising and maintaining vitamin D levels.
2. Vitamin K2
Helps D3 do its job cleanly. D3 helps your body absorb and use calcium, and K2 helps guide where that calcium gets utilized, supporting proper distribution and balance. We chose MK-7 because it stays active longer than other forms, which makes it a better fit for consistent daily use.
3. Organic Olive Oil
Vitamin D is fat-soluble, so it absorbs best with fat. We use olive oil as a clean, food-based carrier that's naturally rich in antioxidants and a better choice than processed oils or fillers.
More than 70% of Americans don't have enough Vitamin D.
Why it happens
Indoor lifestyle, poor diets, seasons, geography, sunscreen use, and inconsistent sun exposure
Why it's missed
It's not routinely tested for, especially among young people unless explicitly requested, so many don't connect their symptoms to low vitamin D
Why it matters
Vitamin D acts more like a hormone and influences gene-related processes throughout the body. It plays a key role in helping your body function the way it's supposed to, yet most people don't get enough of it. Research has described vitamin D deficiency as the most widespread nutritional deficiency worldwide.
Stop paying for overpriced hype. Get what your body actually needs.
Green powder:
$80 / Per month
Green gummies:
$80 / Per month
Premium probiotics:
$80 / Per month
Nootropics:
$80 / Per month
Electrolytes:
$50 / Per month
$30 / Per month (≈ $0.99/day)
Interested in the Science behind D3X?
Why we built D3X.
Our founder didn’t set out to start a supplement company. He was dealing with symptoms he couldn’t really explain: low energy, not sleeping great, and not feeling like he was performing at his best. After getting bloodwork done, he found out he was vitamin D deficient. Once he started looking into it, he realized how common this is and how many people, especially young men like him, are walking around deficient without ever thinking to test for it or connect it to how they feel.
Through his work in the pharma industry, he’d also seen the same bigger problem up close: we spend an enormous amount treating preventable chronic disease, and not nearly enough on preventing it in the first place.
D3X is our response. We’re tired of the overpriced, overhyped supplement circus, with flashy branding, trendy blends, and big promises, but not much substance. D3X is the opposite: a premium, clean vitamin D3 plus K2 routine built around something people actually need, and designed to be easy enough to stick with every day.
Frequently Asked Questions
Vitamin D insufficiency is widespread, especially among people who get limited sunlight, live in urban areas, or spend most of their time indoors. Even with a healthy diet, many individuals may not get enough vitamin D from food or sun exposure alone.* D3X focuses on daily consistency to help fill common nutritional gaps.
Vitamin D is a fat-soluble nutrient that
supports various functions in the body.* It plays a role in maintaining normal
muscle function, immune system support, and overall wellness.* Vitamin D also
interacts with receptors throughout the body, which is why it’s often discussed
in relation to energy, mood, and daily performance.* D3X is formulated to make
vitamin D intake simple and consistent—especially for individuals with limited
sun exposure or indoor lifestyles.*
Low vitamin D levels may be associated with general fatigue, reduced motivation, or changes in mood or focus in some
individuals.* These experiences are nonspecific and can result from a variety
of factors. It’s important to talk to a healthcare provider to better understand your individual health needs.*
Sunlight is a natural source of vitamin D3,
produced by the skin in response to UVB exposure.* However, factors like time
of day, season, skin tone, geographic location, clothing, sunscreen use, and
time spent indoors can limit how much vitamin D your body produces.* Many
people use supplements like D3X to support their vitamin D levels consistently
throughout the year.*