Top 10 Best Vitamin D 25000 Iu

of October 2024
1
Best ChoiceBest Choice
Nutricost Vitamin D3 2000 iu Softgels, 240 Softgels - Non-GMO & Gluten Free
Nutricost
Nutricost

10
Exceptional
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2
Best ValueBest Value
Plant-Based Vitamin D3 Immune Support with Vegan K2 Complex in a Vegetarian
SMARTERNUTRITION
SMARTERNUTRITION

9.9
Exceptional
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3
NatureBell Vitamin D3 50,000 iu with K2 200 mcg, 180 Coconut Oil Softgels |
NatureBell
NatureBell

9.8
Exceptional
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4
Sports Research Vitamin D3 2000 IU with Coconut MCT Oil - High Potency Vitamin
Sports Research
Sports Research

9.7
Exceptional
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5
DEAL SUPPLEMENT Vitamin D3 50,000 IU + K2 MK7 200 mcg,240 Softgels | Virgin
DEAL SUPPLEMENT
DEAL SUPPLEMENT

9.6
Exceptional
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6
Sports Research Vegan Vitamin D3 + K2 Supplement with Organic Coconut Oil -
Sports Research
Sports Research

9.5
Excellent
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7
Metabolic Maintenance Vitamin D-3, 25,000 IU - Vitamin D Supplement with
Metabolic Maintenance
Metabolic Maintenance

9.4
Excellent
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8
NatureWise Vitamin D3 4000iu (100 mcg) Healthy Muscle Function, and Immune
NatureWise
NatureWise

9.3
Excellent
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9
Nutradora D3 Vitamin 10000 IU Softgels 250 MCG - Vitamin D Supplements for
Nutradora
Nutradora

9.2
Excellent
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10
Vitamin D3 Supplement 10000 iu | Vitamin D Liquid Drops for Faster Absorption |
S RAW SCIENCE
S RAW SCIENCE

9.1
Excellent
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11
Sports Research Vitamin D3 5000 IU with Coconut MCT Oil - High Potency Vitamin
Sports Research
Sports Research

9.0
Excellent
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12
Organic Vitamin D Gummies for Adults - Daily Immune Support Gummies with Vegan
Natures Craft
Natures Craft

8.9
Very Good
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13
ForestLeaf - Vitamin D3 50,000 IU Weekly Supplement - 120 Vegetable Vitamin D
ForestLeaf
ForestLeaf

8.8
Very Good
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14
ForestLeaf - Vitamin D3 50,000 IU Weekly Supplement - Vegetable Vitamin D
ForestLeaf
ForestLeaf

8.7
Very Good
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15
NATURELO Vitamin D - 2500 IU - Plant Based from Lichen - Natural D3 Supplement
NATURELO
NATURELO

8.6
Very Good
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16
Carlson - A & D, 25000 IU (7500 mcg RAE) & 1000 IU (25 mcg), Vision Support,
Carlson
Carlson

8.5
Good
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17
NOW Supplements, Vitamin D-3 50,000 IU Softgels, 50 softgels
NOW
NOW

8.4
Good
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18
Vitamin D3 20,000 IU + K2( MK7 ) 200mcg - Once Daily Dose, Optimal Level
NextDia
NextDia

8.3
Good
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19
Country Life Vitamin D3, Non-Fish 2500 IU, 200 Softgels, Certified Gluten Free
Country Life
Country Life

8.2
Good
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20
Our Daily Vites Vitamin D-3 25,000 IU + K2 - High Potency D3 with Vitamin K
AND GIVE US TODAY OUR DAILY
AND GIVE US TODAY OUR DAILY

8.1
Good
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21
THE MIRACULOUS RESULTS OF EXTREMELY HIGH DOSES OF THE SUNSHINE HORMONE VITAMIN

8.0
Good
View on Amazon
22
Metabolic Maintenance Vitamin D3 5000 IU - Superior Absorption Pure Vitamin D3
Metabolic Maintenance
Metabolic Maintenance

7.9
Good
View on Amazon

About Vitamin D 25000 Iu

Click here to learn more about these products.

Nutricost Vitamin D3 2000 iu Softgels, 240 Softgels - Non-GMO & Gluten Free

2,000iu 50mcg Vitamin D3 Per Softgel. 240 Softgels Per Bottle, 1 Softgel is 1 Serving. Non-GMO Gluten Free. Tested by Independent, ISO-Accredited Laboratories. Manufactured in a GMP-Compliant FDA-Registered Facility.

Plant-Based Vitamin D3 Immune Support with Vegan K2 Complex in a Vegetarian Softgel - Includes 5,000 IU of Vitamin D for Immunity Boost, Complete Bone Health & Arterial Protection (1 D3+K2)

THE PERFECT VITAMIN D FORMULA Your First Line of Defense. Smarter Nutrition has pioneered the clean and active Vitamin D3 supplement that big-name store brands SHOULD be selling Its the optimal blend of ingredients for safety and maximum benefits. PREMIUM PLANT-BASED VITAMIN D3 The Most Absorbable and Active Form. Unlike other Vitamin D supplements that contain processed animal by-products, Smarter Nutritions Vitamin D3 comes from the most premium plant source of active Vitamin D3. Its sustainably sourced from a nutrient-rich organism called lichen a vitamin D3 source thats naturally free from contaminants and animal-derived ingredients.. ESSENTIAL VITAMIN K2 COMPLEX Vitamin D has a dependent relationship with vitamin K2, and vitamin D toxicity can be caused by a deficiency in vitamin K2. The benefits of vitamin D3 are greatly enhanced by the presence of vitamin K2 in terms of bone strength, cardiovascular health, and more.. FULLY BIOAVAILABLE Using cutting-edge technology, Smarter Nutrition Vitamin D3 is encapsulated in vegetarian softgels that are free from chemical coatings, fillers, and synthetic binders. We deliver premium, plant-based vitamins D3 and K2 in coconut oil to make Smarter Vitamin D3 as bioavailable as possible..

NatureBell Vitamin D3 50,000 iu with K2 200 mcg, 180 Coconut Oil Softgels | Vitamins D as Cholecalciferol & K as MK-7 | Max Strength Bone, Heart, Immune, & Calcium Support | Once Weekly, Non-GMO

Max strength vitamin D3 K2 50,000 iu softgels, fat soluble vitamins effectively absorbed with added coconut oil, only requires one softgel serving per week, complete sunshine vitamin benefits.. 180 coconut oil infused softgels, 1 softgel serving size, delivers 50,000 iu vitamin D3 and 200mcg vitamin K2 per dose, 6-month supply 180 servings.. Enjoy a maximum strength dose of vitamins D3 and K2 per week, supports ultimate calcium absorption, bone strength, immune function, and heart health.. Taking 50,000 iu of vitamin D3 per week can help combat vitamin D deficiencies in both men and women, especially in individuals with limited sunlight exposure.. Authentic non-GMO D3 K2 supplement. Contains pure ingredients free of soy, dairy, gluten, preservatives, wheat, and fish. All products are also 3rd party lab tested for safety and potency..

Sports Research Vitamin D3 2000 IU with Coconut MCT Oil - High Potency Vitamin D Supplement for Immune & Bone Support - Non-GMO Verified, Gluten & Soy Free 50mcg, 360 Liquid Softgels

DEAL SUPPLEMENT Vitamin D3 50,000 IU + K2 MK7 200 mcg,240 Softgels | Virgin Coconut Oil, Max Strength Vitamin D & K, Promotes Heart, Bone, & Teeth Health One Softgel Weekly, Easy to Swallow

Special Features Max strength vitamin D3 with K2 sunshine vitamin complex, essential fat-soluble vitamins D3 as cholecalciferol and K2 in its superior menaquinone MK7 form, healthy coconut oil liquid carrier that is designed to maximize overall absorption.. Benefits Use An easily absorbed formula that only needs to be taken once per week to enjoy its positive benefits. It will create synergistic support for calcium processing, heart health, bone strength, and immune defense.. Dosage Servings Each easy-to-swallow mini softgel offers high concentrated vitamins for women and men. Providing 50,000iu of vitamin D3 complexed with 200mcg of vitamin K2 with every single-serving softgel and has 240 total servings per bottle.. Purpose Created for those who want a little sunshine nutrients in their life without getting burned. Utilizing essential vitamins that work together to maximize their overall benefits to give the body what it needs most.. Quality Ensured 3rd party lab tested and passed, non-GMO formula made without gluten, dairy, eggs, peanuts, soy, wheat, yeast..

Sports Research Vegan Vitamin D3 + K2 Supplement with Organic Coconut Oil - 5000iu Vitamin D with 100mcg Mk7 Vitamin K - Supports Calcium for Stronger Bones & Immune Health - 60 Softgels for Adults

D3K2 - BETTER TOGETHER On their own, Vitamins D3 and K2 are essential micronutrients, but together, they're an essential team. Vitamin D3 helps your body absorb calcium, while vitamin K2 directs calcium to your bones instead of joints and arteries, where too much calcium could be problematic. Not that's teamwork. PLANT BASED Our Vitamin D and K supplement for women and men contains vegan D3 cholecalciferol from lichen and K2 from fermented chickpeas with added Coconut MCT Oil for enhanced absorption. This two-in-one super supplement is 100 free of animal ingredients and encapsulated in the first carrageenan-free plantgel softgel.. ONE-A-DAY FORMULA Get the best of both worlds with Sports Research D3K2. Just one easy-to-swallow veggie softgel provides 125cg 5000iu of Vegan 100mcg of Vitamin K2 as MK7, the form of K2 with the highest bioavailability for stronger bones and immune system support so you can shine your brightest.. QUALITY TESTED We hold all of our supplements to a higher standard. Our K2 with D3 vitamin supplement is Vegan Certified, Non-GMO Project Verified, and free of unwanted fillers, carrageenan, gluten, and soy. Each batch is third-party tested for quality and manufactured in the USA in a cGMP-compliant facility.. THE SPORT OF LIFE Founded in Southern California in 1980, Sports Research is a family-owned business born from a passion for fitness and wellness. Our goal is to embrace the sport of life through research-backed products created for every bodyinside and out..

Metabolic Maintenance Vitamin D-3, 25,000 IU - Vitamin D Supplement with Vitamin K2 to Support Bone Health & Density - Contains Vitamin K2 MK-7 (60 Capsules)

High Potency Vitamin D Supplement - This product contains a high 25000 IU of vitamin D3 to support bone health .. High Dose Precautions - This product is intended to be used under the supervision of a healthcare professional and not intended for daily use. Vitamin D levels should be monitored while taking this higher dose vit d3 product.. K-2 For Bone Support - This formula contains both vitamin d3 and k2, which research has shown to work together synergistically as a bone health supplement to promote bone density and proper bone nutrition.. Purity and Quality - Our vitamin D k2 supplement is free of fillers, binders, preservatives, artificial colors flavors. Our k2 d3 vitamin supplements are free of gluten, egg, nuts, and magnesium stearate. Bottles are BPA-free recycled amber.. Physician's Choice - The health care professional's choice for quality bone supplements since 1984. We use current research, clinical studies, and third-party testing at all stages of development. Vitamin d3 you can trust, at an exceptional value..

NatureWise Vitamin D3 4000iu (100 mcg) Healthy Muscle Function, and Immune Support, Non-GMO, Gluten Free in Cold-Pressed Olive Oil, Packaging Vary (Mini Softgel), 200 Count

An essential vitamin Vitamin D is an essential nutrient for healthy bones, teeth, muscle function, and immune system support. The mayo Clinic estimates that 25-50 of the general population may be Vitamin D deficient.. SUNSHINE IN A BOTTLE The Vitamin D Council recommends daily vitamin D supplementation for most adults to achieve and maintain optimal levels, regardless of weather or season. NatureWise Vitamin D3 is all natural, non-GMO, and gluten free with no artificial additives, fillers or binders.. Pure natural These Vitamin D3 immune support and bone health supplements are gluten-free and non-GMO. Third party tested for purity and potency. Packaging may vary due to high demand, same great product and ingredients.. Uncompromising Quality All NatureWise supplements are Manufactured in USA-based facilities that comply to the strictest cGMP standards and undergo rigorous testing by third party labs to ensure the highest quality and purity.. DIRECTIONS It's normal for softgels to stick together and clump during warm weather conditions. This does NOT affect the quality or efficacy of the product. To release the clumps, give your bottle a good shake or knock it against the counter..

Nutradora D3 Vitamin 10000 IU Softgels 250 MCG - Vitamin D Supplements for Women and Men with Immune Support & Bone Health, Non-GMO, Olive Oil, 90 Softgel Capsules

High-Potency Vitamin D-3 - Elevate Your Health to the Max Nutradoras Vitamin D3 10000 iu Softgels deliver maximum strength support for overall health, including immune system reinforcement, bone health promotion, and cognitive function enhancement, thanks to their concentrated vitamin D content. Immune System Support - Ready to Empower Your Immune Defense Our high-potency chewable vitamin D 10000 iu softgels are formulated to fortify immune function, potentially defending against harmful health challenges. Bone Health - Empower Your Bones with these organic vitamin D supplements for men and women to facilitate calcium and phosphorus absorption, crucial for strong bones and fracture risk reduction. Cognitive Enhancement - Amplify Your Mental Edge with Nutradora's Vitamina D3 10000 iu Supplements can enhance cognitive function by regulating neurotransmitter activity, potentially improving memory, concentration, mood. Premium Quality Ingredients - Dive into Quality Excellence Crafted with carefully selected, high-quality ingredients, our Vit D3 10000 iu softgels come with a 90-day supply, just take 1 softgel daily to ensure maximum absorption and effectiveness for optimal health wellness.

Vitamin D3 Supplement 10000 iu | Vitamin D Liquid Drops for Faster Absorption | Helps Support Strong Bones and Healthy Heart | Mood & Immune Symptom Function | Emulsified High Dose Vitamin D3

VITAMIN D LIQUID DROPS FOR ADULTS Our blend of cholecalciferol vitamin d3 10000 iu is a step in the right direction on your health journey. Vitamin D3 Drops for adults strengthen immunity, heart function, and bones with every serving. Add Vitamin D3 to your supplement list today. VITAMIN D SUPPLEMENTS FOR MEN WOMEN With the difficulties of modern life, everyone could use help being in a better mood. Our men and womens Vitamin D will have you looking and feeling your best in no time. VITAMIN D3 DIETARY SUPPLEMENT Natural Vitamin D3 oil for skin and wellness is a plant based vitamin d thats perfect for those following a specific diet or lifestyle. Give your body the nutrients it craves without lowering your standards. HIGH POTENCY VITAMIN D Your body deserves the good stuff, which is why our hi potency vitamin d3 is made using only the highest quality ingredients the market has to offer.. EASY TO USE LIQUID FORM Our sublingual Vitamin D is easier to consume and may have a higher absorption rate when compared to powders or capsules. They are also water and fat soluble Vitamin D drops, meaning you feel better, faster..

Sports Research Vitamin D3 5000 IU with Coconut MCT Oil - High Potency Vitamin D Supplement for Immune & Bone Support - Non-GMO Verified, Gluten & Soy Free 125mcg, 360 Liquid Softgels

Organic Vitamin D Gummies for Adults - Daily Immune Support Gummies with Vegan Vitamin D3 2000IU - USDA Organic Vitamin D3 Gummies for Adults Wellness - Non GMO Gluten Free - 1 Month Supply

Advanced Immunity Gummies - Its never been easier to take adult immunity vitamins for year round support thanks to our delicious and nutritious D3 vitamin 2000 IU immune support supplement gummies. Organic Wellness - Embrace the supportive power of gummy vitamin D 2000 IU immunity supplement for adults formulated into our vegan and organic base made with D3 for to its higher bioavailability. Made with Love Care for All - Our vitamin D gummy is carefully crafted in state of the art labs and is GMO Nut Gluten free and is made without artificial flavors to give you the best in wellness. Full Year Support - Give your body the support it needs with our vitamin D3 gummy formula with 2000IU of vegan D3 that helps ward off nasty invaders and can help get you back to yourself faster. Natures Craft Quality - We are proud to be a leading name in a wide variety of Immune gummies Vitamins for adults and other daily wellness supplements because we believe in making health simple.

ForestLeaf - Vitamin D3 50,000 IU Weekly Supplement - 120 Vegetable Vitamin D Capsules for Bones, Teeth, and Immune Support - Easy Swallow Pure Vitamin D3 50000 IU- Non GMO Pills

HIGH POTENCY - Our vegetable based Vitamin D3 50,000 iu helps to support teeth and bone health, provide immune support, and promote healthy muscle function in adult men and women. Available in multiple potency options and savings bundles from Forest Leaf supplements.. ESSENTIAL VITAMIN D - Known as the, sunshine vitamin most of us don't get enough sun exposure for proper Vit D3 levels. Avoid the sun's potentially damaging UV rays and help support immune function, bone and teeth health, and muscle function all year long.. EASY TO SWALLOW - Our special high potency capsules are smaller sized to make them easier to swallow, without sacrificing Vitamin D-3 levels. Save BIG compared to your local pharmacy and enjoy an easier to swallow high potency encapsulation for your daily dose of Vitamin D.. BONE TEETH - Vitamin D3 is an essential nutrient for both the proper maintenance and function of your immune system but also for strong bones and teeth. Help protect your skeletal system and oral health.. ALL NATURAL - These veggie capsules are non GMO, soy free and free from dairy, gluten, eggs and nuts. They are tested for absorption, 3rd party tested and manufactured in a GMP NSF certified USA facility. Join thousands of happy customers...Click Add-to-Cart Today.

ForestLeaf - Vitamin D3 50,000 IU Weekly Supplement - Vegetable Vitamin D Capsules for Bones, Teeth, and Immune Support - Easy Swallow Pure Vitamin D3 50000 (120 Count (Pack of 2))

HIGH POTENCY. ESSENTIAL VITAMIN D. EASY TO SWALLOW. BONE TEETH. ALL NATURAL.

NATURELO Vitamin D - 2500 IU - Plant Based from Lichen - Natural D3 Supplement for Immune System, Bone Support, Joint Health - Vegan - Non-GMO - Gluten Free - 180 Mini Capsules

Plant-Based Vitamin D3 Most vitamin D3 supplements are made from lanolin secreted from sheep skin. Our Vegan Vitamin D3 is sustainably sourced from wild-harvested lichen with no animal byproducts of any kind.. Naturally Bioactive Vitamin D-3, or cholecalciferol, is the natural, active form of vitamin D for your body -- the same form of the vitamin that your own body produces in the sun, but without the risky UV exposure.. Essential Immune Support Vitamin D is crucial for supporting healthy immune function. Vitamin D deficiency is extremely common, especially in winter or when you are stuck indoors.. Supports Bone Health Vitamin D is necessary for your body to absorb calcium for strong bones and teeth. Risk of bone loss increases with age, particularly for women, and is also a risk during pregnancy.. Clean Label Made in the USA in a GMP compliant facility. Non GMO, vegetarian, vegan, and gluten free. Does NOT contain soy, dairy, yeast, eggs, nuts, caffeine, preservatives, or coloring..

Carlson - A & D, 25000 IU (7500 mcg RAE) & 1000 IU (25 mcg), Vision Support, Immune Function & Skin Health, 250 Softgels

Supports vision and bone health. Promotes healthy immune system function. 25,000 IU 7,500 mcg RAE of vitamin A and 1,000 IU 25 mcg of vitamin D3. Vitamin A D work together to help calcium metabolism. Freshness, potency, and purity guaranteed.

NOW Supplements, Vitamin D-3 50,000 IU Softgels, 50 softgels

HIGHEST POTENCYHELPS MAINTAIN STRONG BONES Vitamin D is normally obtained from the diet or produced by the skin from the ultraviolet energy of the sun however it is not abundant in food. SUNSHINE VITAMINSUPPORTS IMMUNE SYSTEM Vitamin D supplementation becomes even more necessary to ensure that your body receives an adequate supply as more people avoid sun exposure. CLASSIFICATIONSCERTIFICATIONS Non-GMO, Halal, Kosher Contains Gelatin. GMP Quality Assured NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined including our laboratorytesting methods for stability, potency, and product formulation. Packaged in the USA by a family owned and operated company since 1968.

Vitamin D3 20,000 IU + K2( MK7 ) 200mcg - Once Daily Dose, Optimal Level -Support Strong Bone, Immune Health & Calcium Absorption, Helping Vitamin D Deficiencies, Easy to Swallow, 240 Servings Softgel

Super Potency Do you need high doses of vitamin D supplementation, 10,000 to 20,000 IUday Our extra strength 20,000 IU Vitamin D3 can meet this need. This easy-to-swallow Vitamin D3K2 softgels are made with high potency 20,000 IU of Vitamins D3 from lichen 500 mcg and vitamin K2 MK-7 from chickpeas 200 mcg, each function more effectively in the presence of the other and enhance the absorption of nutrients by 50.. Strengthens Bones Muscles Vitamin K2 aids transport calcium from our bloodstream into our bones, and supports bone health by activating the proteins that incorporate calcium into bone, and prevent excess calcium from deposit in vessels. D3 is more effective with K2 to help with optimal calcium absorption and distribution in the body, enhance bone, teeth and muscle health.. Boosts Immunity Fat-soluble vitamin K2 optimizing the metabolism of calcium in the vascular structure. Rich organic sunflower seed oil helps reduce cholesterol levels and moisturize your skin. Vitamin D is also vital for immune function to keeping your body in optimal health.. Premium Safe Formula Our vitamin D3 and K2 supplement is certified, non-GMO, gelatin, free of gluten and soy. Manufactured by NEXTDIA is put through a rigorous process to ensure purity, potency and integrity. Level up your health with our high quality vitamin D3 K2 softgels.. Value Pack Our extra strength 20,000 IU Vitamin D3 provide convenient 1 softgels a day for your daily health needs. Our incredible 2 Pack 240 softgels gives amazing value keeping you replenished with a max level of vitamin D3 K2 for over 8 months. Please contact us with any questions about the product. Your 100 satisfaction is our TOP priority..

Country Life Vitamin D3, Non-Fish 2500 IU, 200 Softgels, Certified Gluten Free

Calcium absorption Supports the healthy absorption of calcium to support bone density and strength. High bioavailability vitamin D Helps regulate calcium and maintains healthy phosphorus levels in the blood. Colon immune health Supports a healthy colon and your bodys first line of defense. Strong bones teeth Supplementing provides support for strong bones and teeth. Certified- Certified Gluten Free.

Our Daily Vites Vitamin D-3 25,000 IU + K2 - High Potency D3 with Vitamin K Bone, Immune, Mood + Cardiovascular Support Supplement

Get enough Vitamin D3 Vitamin D is best obtained through time spent outside in the sun. However, with most of our time spent indoors, it is not enough to rely on the sun for vitamin D alone. That is why we bring you the sunshine vitamin in the form of these easy-to-swallow vitamin D3K2 capsules.. Guaranteed to meet our high-quality standards Our premium quality vitamin D3 K2 supplement is manufactured in the USA and rigorously tested to ensure purity and potency in every bottle. No added colors, artificial flavors, or preservatives.. Superior bone health Our K2 and D3 Vitamin supplement contains Vitamin D3 to stimulate calcium absorption and Vitamin K2 to direct calcium intake to the right places, i.e., bones and teeth, as the calcium in your body should not go into soft tissues like blood vessels.. Suitable for all diets For safe consumption by everyone, we choose to keep our K2 and D3 vitamin supplement free from common allergens like gluten, wheat, yeast, milk, lactose, and soy. All ingredients are carefully selected, filler-free and non-GMO.. Risk-free purchase Didn't see the results you expected If you are unhappy with your purchase, or simply wish to clear a few queries then feel free to contact us anytime. We promise to be at your service 24x7..

THE MIRACULOUS RESULTS OF EXTREMELY HIGH DOSES OF THE SUNSHINE HORMONE VITAMIN D3 MY EXPERIMENT WITH HUGE DOSES OF D3 FROM 25,000 to 50,000 to 100,000 IU A Day OVER A 1 YEAR PERIOD

Metabolic Maintenance Vitamin D3 5000 IU - Superior Absorption Pure Vitamin D3 & Vitamin C - Extra Strength Bone, Immune, Mood + Cardiovascular Support Supplement, No Fillers (90 Softgel Capsules)

Bioavailable D3 Vitamins - Our pure vitamin D3 is the most biologically active form of the vitamin. It is essential to many bodily processes, including helping the body absorb calcium.. High Potency Vitamin D3 Capsules - This product contains 5000 IU of vitamin D3, as well as 300 mg of vitamin C ascorbic acid.. Extra Strength D3 Precautions - Physician monitoring of Vitamin D levels is recommended alongside the use of a higher potency Vitamin D3 supplement.. Purity Potency - Our Vitamin D3 softgel is free of fillers, binders, preservatives, flavors. Gluten-free cholecalciferol D3 without egg, nuts, or magnesium stearate. Bottles are BPA-free recycled amber.. Physician's Choice - The health care professional's choice in pure vitamin D3 since 1984. We utilize research, clinical studies, and third-party testing at all development stages. This is a potent Vitamin D3 supplement at an exceptional value..