A Highly Absorbable Blend of Vitamins D3 and K2
A Highly Absorbable Blend of Vitamins D3 and K2
Restore optimal D3 and K2 levels with this clean, easy-to-absorb, liquid formula.
Supercharge your immune, metabolic, cardiovascular, and bone health
Flexible dosing: 1,000 IU of D3 and 120 mcg of K2 per one-drop serving
Only 3 ingredients: MCT oil, D3, and K2. No artificial fillers or junk!
High-potency formula (600 servings per bottle!) saves you money and time.
Overcome Vitamin D Inadequacy (>90% of Americans)
Support immune function, heart and metabolic health, mood, cognitive function, strong bones
Protect Your Bones and Heart
Experience the synergistic benefits of D3 and K2 for cardiovascular and bone health.
Fine-Tune Your Daily Dose
With 1,000 IU of D3 and 120 mcg of K2 per drop, our flexible liquid formula makes it easy to get exactly the amount you need.
Affordable and Efficient D3/K2 Benefits
Our high-potency formula provides a clean source of D3/K2 at less than 6 cents per serving.
Powerful Nutrients & Vitamins
Real Stories of Health and Happiness
"Great price for a high quality vitamin D that will last a VERY long time."—Lauren, Verified
“I really like the fact that these two vitamins are combined in liquid form.”—Dianne, Verified
“This is so easy to take daily!”—Michelle, Verified
Discover the Bio-Avail D3/K2 Advantage
Meet Chris Kresser, your
Trusted Health & Wellness Guide
Founder & Functional Medicine Clinician
- Globally renowned expert with over 15 years of experience
- Dedicated to helping people improve their health by addressing modern challenges and nutrient gaps
Author & Educator
- Treated thousands of patients
- Trained more than 2,000 healthcare professionals
- Gained valuable insights into functional medicine and nutrition
Why choose Bio-Avail D3/K2?
Our modern diets often fall short of providing the optimal amounts of essential nutrients our bodies need to function at their best. With the Bio-Avail D3/K2, you can overcome nutrient deficiency and support your overall health and well-being. We've done the research, so you don't have to!
Formulated to Replicate Optimal Ancestral Diets
Changes in dietary patterns, declining soil quality, and a growing toxic burden have made it increasingly difficult to obtain adequate nutrients from our daily food intake. Most Americans don’t get enough vitamin D and K2—with potentially serious consequences. With just a few drops of Bio-Avail D3/K2 daily, you’ll never have to worry about falling short of these critical nutrients again!
Harness Years of In-Clinic Experience and Ancestral Wisdom
Backed by Adapt Naturals' 15 years of in-clinic experience and dedicated to creating supplements that make a meaningful difference, Bio-Avail Omega+ combines cutting-edge research with insights from ancestral wisdom to bring you a premium-quality supplement.
Signs You Need Bio-Avail D3/K2
Frequent colds & flu
Brain fog, poor memory
What You'll Feel Using Bio-Avail D3/K2
Better immune function
Improved cardiovascular function
Unlock Your Optimal Health
Upgrade Your Wellness with Bio-Avail D3/K2—Lifelong Health, SimplifiedGet Healthier & Happier - Try Now
Your Questions Answered
Take one to five drops per day with or without food as directed by your healthcare provider. The optimal dosage will depend on your individual needs and whether you take vitamin D3 and/or K2 in other products.
We suggest consulting with your healthcare provider to determine your optimal dose of vitamins D3 and K2. Bio-Avail Multi contains 2,000 IU of vitamin D3 and 50 mcg of vitamin K2. Bio-Avail D3/K2 contains 1,000 IU of vitamin D3 and 120 mcg of K2 per serving/drop. This makes achieving your optimal dose of both nutrients easy according to your healthcare provider’s recommendations.
The shelf life is two years.
The MCT oil is derived from coconuts. This product is not suitable for people who are allergic to coconuts.
No, it is not vegan. The vitamin D3 is sourced from lanolin, which comes from the glands of wool-bearing animals.
I enjoy taking my d/k drops daily.
Hi Richard, We are glad to know you are enjoying our D3/K2 supplement. Thank you for reviewing this product!
I’ve purchased other brands before switching to the Adapt Naturals and the number one ingredient I prefer is the MCT oil over olive or other oils added for taste. I feel more energized daily using the Adapt Naturals brand.
Hi Alex, We are happy to know you have noticed a difference in your energy since you started our D3/K2 supplement. Thank you for leaving us a review! All the best.
I have returned to the fitness world around 6 months ago and of course recovery is the biggest struggle and I too often had to rest for too many days because I was too sore or my shoulders hurt too bad.
THEN...I purchased the BIO-Avail D3/K2 and I'm seriously seeing so many results! I take 5 drops a day and then I do 10 drops on my rest days and I recover SO SO much quicker. My energy level is up too!!
Hi Andrew, We are pleased to hear our D3/K2 has helped you to recover faster when you exercise. We appreciate your support to Adapt Naturals. Thank you for leaving us a review!
I like them . I will keep buying.
Hi George, We are happy you are loving our D3/K2.Thank you for supporting Adapt Naturals, We appreciate your review!
Love that there’s enough doses in the bottle for the entire family to use—- great deal!
Hi Rochelle, We are happy the dosage in the D3/K2 is enough to supplement you and your family. Thank you for reviewing this product. We appreciate your support to Adapt Naturals!