10 Best Thorne Vitamin D K2 Liquid of 2025

Tested and Reviewed: Top 10 Thorne Vitamin D K2 Liquid deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

Sports Research

Sports Research® Vitamin D3 + K2 w/ Coconut Oil - Vegan Vitamin D 5000iu & Mk7 Vitamin K 100mcg for Bone & Immune Support - Vegan Certified · Non-GMO · Soy Free - 60 Softgels

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Editor's bottom line:

“This thorne vitamin d k2 liquid is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

D3 + K2 TEAMWORK THAT MATTERS: Vitamins D3 and K2 work synergistically to support strong bones, immune health, and proper calcium metabolism.* D3 helps your body absorb calcium, while K2 (as MK-7) guides it to the bones where it belongs.* Together, they form a powerful combo for total-body wellness.*
PLANT-BASED, VEGAN-FRIENDLY FORMULA: Our D3 + K2 supplement uses vegan D3 (cholecalciferol) sourced from lichen and K2 (MK-7) derived from fermented chickpeas, with coconut MCT oil added to support optimal nutrient absorption.* No animal ingredients, everjust effective, science-backed support.*
ONCE-A-DAY IMMUNE & BONE SUPPORT: Each easy-to-swallow softgel delivers 125 mcg (5000 IU) of vegan D3 and 100 mcg of K2 (MK-7)the most bioavailable form of K2. Just one softgel per day helps promote bone health, immune support, and cardiovascular health in both women and men.*
CERTIFIED CLEAN & QUALITY TESTED: Our vitamin D3 and K2 formula is Vegan Certified, Non-GMO Project Verified, and free of carrageenan, gluten, soy, and artificial fillers. Each batch is 3rd-party tested and manufactured in the USA in a cGMP-compliant facilitybecause your health deserves the highest standard.
NUTRITION YOU CAN TRUST: At Sports Research, we craft supplements with ingredients you recognize and results you can feel. Our D3 + K2 softgels deliver plant-based purity, clinical strength, and real transparency, helping you live brighter every daynaturally.*

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Picked by 397 people today

9.5

NUSAVA

(2 Pack) Organic Vitamin D3 K2 Drops with MCT Oil Omega 3, 5000 IU, Maximum Strength Vitamin D Liquid, No Fillers, Non-GMO Liquid D3 for Faster Absorption and Immune Support (Unflavored, 2 Fl Oz)

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Main Highlights

Liquid Vitamin K2 D3 Formulated for Maximum Potency: Each dose contains 125 mcg (5000IU) of Vitamin D3, 120 mcg of Vitamin K, 250mg of Omega 3, and a potent blend of organic ingredients.
Tons of Benefits in Every Drop: Our potent blend of vitamin d3 liquid drops boast maximum strength on every serving.
Liquid Vitamin D3 and K2 for Faster Absorption: A 4-in-1 supplement that's significantly faster to take and for your body to absorb compared to Vitamin D3+K2 capsules.
Certified Organic Vitamin D: Our Vitamin D3 K2 liquid drops do not contain any fillers, are non-GMO, and are proudly USA-made. We carefully curated and sourced all ingredients in our Vitamin D3 liquid for your overall wellness.
Worry-Free Purchase: In addition to being a convenient vitamin D liquid, each purchase comes with a hassle-free refund or replacement policy. While we stand by the quality of our vitamin D supplements, your health and satisfaction will go above everything else.

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9.5

Triquetra Health

Organic Plant D3 K2 vitamin 10000 iu - All-Trans MK7 from MenaQ7 (120 mcg K2) - 100% Organic & Plant-Based Sublingual D3 Drops 10,000 iu (Cholecalciferol), 100% Vegan - Supports Immunity, Bone, Brain

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Main Highlights

ORGANIC, PLANT-BASED VITAMIN D3: Plant-D3 is Organic Vitamin D3 derived from sun-grown algae delivered in the optimal Cholecalciferol form.
MAX STRENGTH 10,000 IU D3: This is a max strength formula with 10,000 iu of vitamin D3 and 120 mg of Vitamin K2 as MK7.
VITAMIN K2 AS ALL-TRANS MK-7 (120 mcg per Serving from MenaQ7): All-Trans K2 is the 100% BioActive form of K2 that activates K2-dependent enzymes and proteins. A majority of K2 in the market is a blend of "cis" form MK7, which is biologically inactive and cannot easily be absorbed. MenaQ7 natural is derived from chickpeas and is 100% soy free.
UPTO 300% HIGHER ABSORPTION: The liquid sublingual form is shown to have up to 300% higher absorption than capsules and tablets.
USDA CERTIFIED ORGANIC, MADE IN USA, 3RD PARTY TESTED Plant-D3 is organically certified by the USDA and exceeds all vegan standards. It is GMO-free, soy-free, gluten-free, preservative-free, additive-free. It is produced in a cGMP & organic certified facility in the USA and is 3rd party tested for over 100+ toxins or microbials.

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9.2

NUTRAHARMONY

Vitamin D3 K2 USDA Organic Drops - Vitamin D3 10000 IU & K2 as MK-7 120mcg - Immune & Mood Support, Bone & Teeth Health - Sugar-Free Orange Flavor - Liquid Supplement - Made in USA - 2 FL OZ, 60 Days

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Main Highlights

VITAMIN D3 + K2 DROPS thoughtfully formulated with Vitamin D3 (Cholecalciferol) and Vitamin K2 (MK-7) to work synergistically. Essential fat-soluble vitamins are carefully paired for optimal absorption, bioavailability & overall effectiveness.
EXTRA-STRENGTH POTENCY delivers 10,000 IU of Vitamin D3 per serving (1250% Daily Value), designed for individuals who require high-potency Vitamin D support, especially during periods of limited sun exposure or increased nutritional demand.
USDA ORGANIC every stage of sourcing and production of D3+K2 drops meets strict federal organic standards, including the prohibition of synthetic pesticides, GMOs, artificial preservatives, and irradiation, with careful oversight to ensure ingredient purity, responsible farming practices, and clean processing from farm to final product.
BONE STRENGTH & CALCIUM ABSORPTION Vitamin D3 supports efficient Calcium absorption, while Vitamin K2 (MK-7) helps guide Calcium to bones and teeth. Together, D3K2 supports bone strength, density, and long-term skeletal health.
IMMUNE & DAILY WELLNESS SUPPORT Vitamin D3 plays a key role in supporting immune function and overall nutritional balance, while K2 complements systemic wellness. Designed to support foundational health as part of a consistent daily routine.
ENHANCED ABSORPTION IN MCT OIL formulated in a liquid, fat-based delivery system using organic MCT oil from Coconut. As fat-soluble nutrients, Vitamins D3 and K2 are better absorbed when delivered in oil form, supporting enhanced bioavailability and efficient utilization by the body.
SUGAR FREE & ORANGE FLAVOR easy-to-use dropper allows flexible and precise dosing. The recommended serving is 1 ml daily, diluted in water or a smoothie, or taken directly under the tongue. Featuring a delicious natural orange flavor, the drops are pleasant to take and easy to incorporate into your daily routine.
PREMIUM QUALITY, MADE IN USA manufactured in the USA in a GMP-certified facility. Each batch is third-party tested for purity, potency, and quality assurance.
CLEAN & EFFECTIVE FORMULA USDA Organic, non-GMO, gluten-free, and free from artificial colors, and preservatives. Carefully developed with safety, transparency, and effectiveness as top priorities.

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9.0

THORNE

THORNE - Vitamin D + K2 Liquid with a Metered Dispenser - Vitamins D3 & K2 to Support Healthy Bones & Muscles* - 1 Fl Oz (30 ml) - 600 Servings

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Main Highlights

Bone & Muscle Health: Both vitamin D and vitamin K2 provide advanced support for bone and muscle health, as well as cardiovascular health and immune function*
Promotes Calcium Absorption: Vitamin D is necessary for calcium absorption, and vitamin K is important for directing calcium to the bones and away from the soft tissues, such as the blood vessels and kidneys*
Combo Effect: A convenient self-dispensing top provides accurate dosing of individual drops of well-tolerated vitamins D3 and K2, which offer greater support when taken together*
Third-Party Certified: This product has been third-party tested and certified to verify what's in the package matches what's on the label and to confirm it contains no unsafe levels of contaminants
Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners (2023 Health-Care Practitioner Seller Survey)

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8.8

THORNE

THORNE - Vitamin D Liquid - Vitamin D Supplement - Supports Healthy Bones and Muscles, Cardiovascular Health & Immune Function* - 1 Fl Oz (30 ml) - 600 Servings

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Main Highlights

Vitamin D3 Benefits: Supports healthy teeth and bones by enhancing the absorption of calcium; supports immune function and cardiovascular health*
Optimal Absorption: Vitamin D3 (as cholecalciferol) is more potent and better absorbed than vitamin D2 (or ergocalciferol); research shows vitamin D3 is more effective at raising overall vitamin D levels*
Easy to Take: The liquid form makes supplementation easy to customize for adults and children and can be mixed with food or beverages for ease of use
Third-Party Certified: This product has been third-party tested and certified to verify what's in the package matches what's on the label and to confirm it contains no unsafe levels of contaminants
Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners (2023 Health-Care Practitioner Seller Survey)

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8.6

THORNE

THORNE - Vitamin K2 Liquid (1 mg per Drop) - Concentrated Vitamin K2 Supplement for Heart and Bone Support* - Gluten, Dairy & Soy-Free - 1 Fl Oz

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Main Highlights

Bone Health: Contributes to bone strength and density by helping to direct calcium to the bones and keeping it from accumulating in soft tissues*
Heart Health: Supports a healthy heart and blood vessels with MK-4, an extensively studied form of vitamin K2*
Liquid Vitamin K2: Self-dispensing top provides an accurate, safe, and individualized serving, by metering individual drops with 1 mg of vitamin K2 (as MK-4) per drop
4 Rounds of Testing: Our state-of-the-art laboratories enable us to conduct 4 rounds of testing on every product, from analyzing the purity of raw materials to confirming the shelf life of finished formulas
Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners (2023 Health-Care Practitioner Seller Survey)

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8.3

THORNE

THORNE - Vitamin D3 with a Metered Dispenser - Liquid Vitamin D Vegan Supplement - Supports Healthy Bones, Teeth, Muscles, Cardiovascular & Immune Function* - 4,000 IU - 1 Fl Oz (30 mL) - 30 Servings

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Main Highlights

Vegan Vitamin D: Sustainably sourced plant-based vitamin D3 that supports healthy teeth and bones by enhancing the absorption of calcium; supports immune function and cardiovascular health*
Optimal Absorption: Vitamin D3 (as cholecalciferol) is more potent and better absorbed than vitamin D2 (or ergocalciferol); research shows vitamin D3 is more effective at raising overall vitamin D levels*
Easy to Take: The liquid form with a bulb-dropper top measures doses of both 2,000 and 4,000 IUs of vitamin D that can be mixed with food or beverages, empowering customizable supplementation
4 Rounds of Testing: Our state-of-the-art laboratories enable us to conduct 4 rounds of testing on every product, from analyzing the purity of raw materials to confirming the shelf life of finished formulas
Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners (2023 Health-Care Practitioner Seller Survey)

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8.1

AG1

AG1 Vitamin D3 K2 Drops, 1000IU of Vitamin D3 and 100mcg of K2 per Serving, Supports Bone Density and Calcium Absorption (Athletic Greens)

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Main Highlights

AG VITAMIN D3+K2: Complements AG1 by providing additional support for immune and bone health.* Every drop provides a high concentration of vitamin D3 combined with vitamin K2 for enhanced efficacy.*
FOR MEN, WOMEN, PEOPLE AGED 18+: AG Vitamin D3+K2 is suitable for a variety of different diets and lifestyles, including, paleo, keto and low-carb,vegetarian, and intermittent fasting. No artificial colors, No artificial flavors, No artificial sweeteners, No added sugar. Suitable for people over 18 years old who are not currently pregnant or breastfeeding.
IMMUNE, BONE, & HEART HEALTH: Combining vitamins D3 and K2 provides greater benefits together than either does separately. It supports a healthy immune response, helps maintain bone density, and supports heart health.*
HIGH-CONCENTRATION LIQUID VITAMIN DROPS: Flexible, easy-to-use dropper to personalize any serving. Vitamin D is hard for the body to process from foods and is more effective in oil forms. Since we never compromise on quality at AG, AG Vitamin D3+K2 is formulated separately from AG1 to ensure the high-quality vitamins are absorbed into your body.
AG1 D3 K2 Liquid delivers 1,000IU of highly bioavailable vitamin D3 plus 100mcg of K2 per drop to promote optimal bone, heart, and immune healthformulated in an oil base for superior absorption and easy personalization of your daily dose. This vegan, non-GMO liquid formula is free of gluten, dairy, and soy, with a convenient dropper for direct use on the tongue or mixing into drinks.
USAGE: D3 and K2 work synergistically: vitamin D3 supports calcium absorption, while K2 directs calcium to bones and away from arteries, optimizing bone density and cardiovascular wellness.

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8.1

Dr. Berg Nutritionals

Dr. Berg Maximum Strength Vitamin D3 K2 Liquid Drops with MCT Oil – 5,000 IU Liquid Vitamin D3 with K2 – Supports Strong Bones, Heart, Energy, Immunity, and Overall Vitality* - Unflavored 1 Fl Oz

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Main Highlights

Full-Body Wellness Support - Each serving of our liquid vitamin D3 K2 drops delivers 5000 IU of Vitamin D3 and 50 mcg of Vitamin K2 (MK-7), a powerful duo that supports bone density, cardiovascular function, immune health, and overall vitality.*
Vitality Starts with D3 + K2 - Our vitamin D3 liquid formula combines Vitamin D3, which helps your body absorb calcium, with Vitamin K2, which guides that calcium to your bones and teethinstead of soft tissues. Together, they support strong bones, heart health, and balanced calcium levels.*
Daily Support, No Pills Needed These liquid D3 K2 drops are easily absorbed and are a simple way to provide your body with essential Vitamins D3 and K2. Just shake well and take one dropperful per dayno pills, no hassle, just fast, effective support. Comes in a glass bottle with an easy-to-use dropper.
Enhanced Absorption with MCT Oil Our liquid vitamin D3 drops are formulated with vitamin K2 as MK-7 and medium-chain triglycerides (MCT oil) for superior absorption. These D3 K2 liquid drops are third-party tested in a GMP-certified facility. Non-GMO, gluten-free, and free from artificial additives.
Try for 30 Days: If you are unhappy with this product reach out to us within 30 days of your purchase date and we will take care of you.

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Our Best Overall Choice

Best Choice

9.7

Sports Research

Sports Research® Vitamin D3 + K2 w/ Coconut Oil - Vegan Vitamin D 5000iu & Mk7 Vitamin K 100mcg for Bone & Immune Support - Vegan Certified · Non-GMO · Soy Free - 60 Softgels

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Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

D3 + K2 TEAMWORK THAT MATTERS: Vitamins D3 and K2 work synergistically to support strong bones, immune health, and proper calcium metabolism.* D3 helps your body absorb calcium, while K2 (as MK-7) guides it to the bones where it belongs.* Together, they form a powerful combo for total-body wellness.*
PLANT-BASED, VEGAN-FRIENDLY FORMULA: Our D3 + K2 supplement uses vegan D3 (cholecalciferol) sourced from lichen and K2 (MK-7) derived from fermented chickpeas, with coconut MCT oil added to support optimal nutrient absorption.* No animal ingredients, everjust effective, science-backed support.*
ONCE-A-DAY IMMUNE & BONE SUPPORT: Each easy-to-swallow softgel delivers 125 mcg (5000 IU) of vegan D3 and 100 mcg of K2 (MK-7)the most bioavailable form of K2. Just one softgel per day helps promote bone health, immune support, and cardiovascular health in both women and men.*
CERTIFIED CLEAN & QUALITY TESTED: Our vitamin D3 and K2 formula is Vegan Certified, Non-GMO Project Verified, and free of carrageenan, gluten, soy, and artificial fillers. Each batch is 3rd-party tested and manufactured in the USA in a cGMP-compliant facilitybecause your health deserves the highest standard.
NUTRITION YOU CAN TRUST: At Sports Research, we craft supplements with ingredients you recognize and results you can feel. Our D3 + K2 softgels deliver plant-based purity, clinical strength, and real transparency, helping you live brighter every daynaturally.*

Show Price

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