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Vitamin D3, or cholecalciferol, is the form your body was designed to produce from sunlight itself. It is the most bioavailable form of vitamin D, and the one your cells recognize and use most efficiently to support long-term health.
Yet deficiency is remarkably common, especially in northern latitudes and during the low-light months of winter, when even consistent time outdoors isn't enough to maintain optimal levels.
Vitamin D3 is foundational to healthy aging. It supports immune resilience, bone density, muscle strength, and cognitive and emotional wellbeing, working by enhancing your body's absorption of calcium and phosphate from food. This is what allows bones to stay strong and muscles to perform as they should, year after year.
Each serving delivers 1000 IU (25 mcg), a precise, well-researched maintenance dose formulated to support sustained wellness without excess. As a fat-soluble nutrient, D3 is best absorbed alongside a meal containing healthy fats.
Formulated with purity in mind, our softgels are free from unnecessary additives and fillers, offering a dependable foundation for longevity, year-round.
Vitamin D3 1000 IU
Take with a meal containing fats, preferably in the morning or at lunchtime.
365 Capsules
Take one Vitamin D3
Take with a meal containing fats, preferably in the morning or at lunchtime.
Take consistently each day to support your wellness routine.
I started Augment Life after years of frustration with the supplement industry. The longevity research was clear. We know which pathways matter for healthy aging. But when I went to actually buy supplements? Everything fell short.
Products filled with fillers and additives. Labels that confused more than they clarified. Bold claims with zero proof behind them.
I wanted something simple: know exactly what I'm taking and why it works.
When I couldn't find it, I built it myself.
I partnered with longevity scientists and suppliers I could trust. We created formulations backed by clinical research and verified through independent testing. Every ingredient serves a purpose. Every formula gets tested. No proprietary blends. No shortcuts.
That's what Augment Life is today.
Supplements that actually work, proven by science, designed for people who want to live better and longer.
Because you deserve to know exactly what you're putting in your body.
—Thomas Hillard, Founder
Vitamin D3, or cholecalciferol, is the form of vitamin D your skin produces naturally from sunlight. It's the most effective form for raising and maintaining healthy vitamin D levels in the body.
Deficiency is widespread, particularly in northern latitudes and during winter months, when sunlight exposure is limited and the skin can't produce enough D3 on its own.
Vitamin D3 plays a role throughout the body, supporting bone density, muscle function, immune response, and mood regulation.
Yes. Vitamin D3 is suitable for everyday use throughout the year, particularly helpful during winter months or periods of limited sun exposure.
Vitamin D3 is generally well-tolerated alongside other supplements. If you're taking medication or have a health condition, consult your healthcare provider before use.
Store in a cool, dry place, away from direct sunlight. Keep the container tightly closed when not in use.