How to Take
Bio-Avail D3/K2
Everything you need to get the most from your liquid vitamin D3 and K2 formula—dosing, timing, and what to expect as your body restores optimal levels.
1–5 drops daily (flexible dosing)
Bio-Avail D3/K2 is a liquid formula delivering 1,000 IU of vitamin D3 and 120 mcg of vitamin K2 (both MK-4 and MK-7 forms) per drop, suspended in MCT oil for optimal absorption. With 600 servings per bottle, it's less than 6 cents per serving.
Your Flexible Dose
Place drops directly on your tongue or add to food. Most adults benefit from 2–5 drops daily (2,000–5,000 IU of D3), depending on current vitamin D levels, sun exposure, and body weight. Consult your healthcare provider or get your levels tested to dial in your ideal dose.
Your results timeline
Vitamin D and K2 work behind the scenes on critical systems. Most benefits aren't immediately felt but are profoundly important.
As vitamin D levels begin to rise, many people notice improved mood and energy—especially if they were significantly deficient. Sleep quality may improve. Your immune system is receiving the foundational support it needs to function properly.
Vitamin D levels are optimizing. Immune resilience strengthens—you may notice you're getting sick less often or recovering faster. K2 is directing calcium to your bones (where you want it) and away from your arteries (where you don't). Metabolic health markers may improve.
Bone density and cardiovascular health benefit from the sustained D3/K2 synergy. Seasonal mood fluctuations may diminish as D levels stabilize. This is a foundational supplement—the benefits compound quietly but significantly over months and years.
Build the habit
A few drops a day is as simple as it gets. Here's how to never forget.
Add drops to your morning meal
Drop your dose directly onto food—eggs, yogurt, oatmeal—or place on your tongue before eating. The MCT oil is tasteless and clean.
Keep the bottle on the table
It's small enough to sit on your breakfast table or kitchen counter permanently. If you see it every morning, you'll take it.
Set a reminder
The MediSafe app (free, iOS & Android) works great for supplements. Set a daily reminder tied to your first meal.
Don't aim for perfection
Missing a day won't undo your progress. Vitamin D is stored in your fat tissue, so levels don't drop overnight. Continue the next day as normal.
Your questions, answered
Most adults benefit from 2–5 drops daily (2,000–5,000 IU of D3). The ideal dose depends on your current vitamin D levels, sun exposure, body weight, and health goals. We recommend getting your vitamin D levels tested to dial in your optimal dose.
Liquid allows for flexible, precise dosing—you can easily adjust by 1,000 IU increments. It's also suspended in MCT oil, which enhances absorption of these fat-soluble vitamins. And at 600 servings per bottle, it's extremely cost-effective.
Vitamins D3 and K2 work synergistically. D3 helps your body absorb calcium, while K2 directs that calcium to your bones and teeth—and away from your arteries, where it can cause problems. Taking D3 without K2 means calcium may end up in the wrong places.
Bio-Avail Multi contains 3,000 IU of D3 and a vitamin K blend. If your vitamin D levels are already optimal, the Multi may be sufficient. If you're deficient or want to fine-tune your dose, D3/K2 gives you flexible, precise control on top of what the Multi provides.
Mood and energy improvements may appear within 2–4 weeks, especially if you were significantly deficient. Immune, bone, and cardiovascular benefits build over 1–6 months as vitamin D stores fully optimize.
Refrigeration is not required. Store in a cool, dry place away from direct sunlight. The bottle is designed to keep the formula stable throughout its shelf life.
No need to worry. Vitamin D is stored in your fat tissue, so levels don't drop from one missed day. Continue your normal dose the next day—no need to double up.
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