10 Best Vitamin D3 High Strength K2 in The UK

Last updated on 16/07/2025

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Vitamin D3 + K2 Softgels | High-Strength D3 with MK-7 | Omega-3 DHA/EPA, Astaxanthin, Black Seed Oil, Algal DHA, Immune & Bone Health Support | 180 Softgels

Why We Love It

Boosts immunity effectively.
Supports bone and heart health.
Vegan softgels for everyone.

Main Highlights

🌞 Boosts Immunity: Supports a strong immune system with a high-potency blend of Vitamin D3 and K2.
🦴 Bone & Heart Health: Promotes calcium absorption for strong bones and aids cardiovascular health by preventing calcium buildup in arteries.
🌿 Premium Ingredients: Enriched with Omega-3 DHA/EPA, Magnesium, Coconut Oil, and natural Astaxanthin for enhanced absorption and antioxidant support.
🥥 100% Vegan Softgels: Plant-based, easy-to-swallow softgels made for everyone.
⚡ Energy & Vitality: Helps improve energy levels, mood, and overall vitality.

Vitamin D3 & K2 (MK-7) in Organic Black Seed Oil/Nigella Sativa (30ml) - High Strength Liquid (3000IU), 100% Trans MK-7, Immune, Bone Support, Heart Health, Sublingual, Made in UK by Nature Provides

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Why We Love It

Efficient absorption and dosage management.
Supports immune system and bone health.
Ensures correct calcium absorption.

Main Highlights

Why nature provides’ vitamin D3 + K2? Our Vitamin D3 + K2 supplement offers a high-strength combination of 3000 IU of Vitamin D3 and 50 mcg of Vitamin K2 (highly researched Mk-7, MenaquinGold form) per daily dose. Uniquely formulated with antioxidant rich, organic, cold pressed black seed oil (nigella sativa) also known as Cumin Oil, it offers further health supporting benefits. This highly bioavailable liquid formula ensures optimal absorption and utilisation by the body
How to take vitamin D3 + K2? Vitamin D3 + K2 is easy to take and has the recognisable flavour of a high quality black seed oil also known as Cumin Oil. Designed to be taken on the tongue for optimal absorption, simply take 5 drops daily. Each 30ml bottle contains 160 servings, offering a 5 months supply. The liquid formula also makes it easy to adjust the dose to suit your daily requirements.
Support your health: Our Vitamin D3 + K2 promotes Healthy Bones and Teeth by aiding calcium absorption and directing it to where it's needed most. It also supports Cardiovascular Health by preventing calcium buildup in arteries, and supports a healthy Immune Function, contributing to overall well-being.
Premium quality, no additives: Our pure, high quality D3+K2 formula is Vegetarian-friendly, 100% GMO-free, and contains no artificial colours, flavours, sugars, or preservatives. Packaged in Miron UV-proof glass for natural protection against UV light, we use only the purest ingredients.
Customer peace of mind: At Nature Provides, we aim to provide comprehensive information and support. If you have any questions, our friendly team is available to offer personalised assistance to help integrate this supplement into your lifestyle. We strive for 100% customer satisfaction and are here to help if you are not completely happy with your purchase.
What is the story behind Nature Provides? We are a trusted, nutritionist-led UK company, offering high-quality supplements. Born out of a desire to see more Pure and Effective supplement options on the market, our products are expertly developed and sourced by our Certified Nutritionist and manufactured in an ISO-accredited, GMP, FDA registered laboratory here in the UK, adhering to the highest manufacturing standards.

High Strength Vitamin D3 and K2 360 Tablets - 4,000 IU 250mcg - Phoenix Nutrition

Why We Love It

Promotes proper calcium deposition.
High dosage ensures effectiveness.
Convenient packaging for longevity.

Main Highlights

Vitamin D3 - 4,000 IU per tablet as Cholecalciferol
Vitamin K2 - 250mcg per tablet as MK-7
Synergistic combination of Vitamins D3 & K2 work together to ensure calcium is deposited correctly where it belongs; in the bones.
360 tablets (3 x 120) in a sealed letterbox friendly pouch

Vitamin D3 4000IU & K2 125μg (MK7) | 240 Easy to Swallow Vitamin D Tablets as Cholecalciferol | 8 Months Supply | VIT D3 K2 Supplements | 1 a Day VIT D

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Why We Love It

High strength for better absorption.
Provides 8-month vitamin supply.
Enhances immunity, joints and muscles.

Main Highlights

DAILY DOSE OF VITAMIN D3 K2: Looking for an effective way to get enough Vitamin D & K2? Look no further as WeightWorld's Vitamin D supplement offers Vitamin D3 4000IU (as Cholecalciferol) with added 125mcg of Vitamin K2 (98% All-Trans MK-7) for optimal absorption. Experience the natural way of living.
LONG-LASTING SUPPLY WITH NO WORRY: Each bottle of WeightWorld's Vitamin D contains 240 easy-to-swallow micro Vitamin D3 & K2 tablets that last for 8 months straight. While sunlight is the most common source of Vitamin D, maintaining optimal levels can be challenging due to various lifestyle factors. Take one micro tablet daily to meet the recommended intake of both D3 and K2.
LEVEL UP WITH VITAMIN D3 K2 SUPPLEMENTS: Vitamin D contributes to the maintenance of normal bones. It also contributes to the normal function of the immune system. Additionally, Vitamin D contributes to the normal absorption/utilisation of calcium and phosphorus and contributes to normal blood calcium levels (EFSA Claims). Get the most out of this Vitamin D3 K2 supplement, as the added Vitamin K2 MK7 increases the absorption of Vit D.
VEGAN AND FREE FROM ADDITIVES: This Vitamin D with K2 Supplement is entirely vegan and free from GMOs, magnesium stearate and harmful additives. Crafted under strict GMP guidelines, each batch of this supplement is tested and certified for purity. Unlike traditional Vitamin D, these specially formulated Vitamin D3 K2 tablets are designed to provide from the inside out.
THE JOURNEY OF WEIGHTWORLD: Born from a passion for food supplements, WeightWorld has been growing since 2006. With nearly two decades of experience, the brand offers a wide range of products, including vitamins, minerals, plant-based supplements, devices, and more. Now reaching multiple countries, the focus remains on developing products that evolve with changing needs while staying true to the values that started it all.

Vitamin D3 5000 IU & Vitamin K2 100mcg (MK-7) x120 Capsules, 4 Month Supply - High Strength Vitamin D & K2 Supplement for Men & Women, Made in The UK by Royal Oak Health

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Why We Love It

Premium strength for optimal health.
Enhanced absorption, easy to swallow.
Providing four months of support.

Main Highlights

Maximum Strength Vitamin D3: Vitamin D is an essential nutrient our bodies produce naturally following exposure to UVB rays (hence the sunshine vitamin). However, during the winter months it can become difficult to maintain sufficient vitamin D levels. Our daily vegetarian capsules each provide 5,000 IU of Vitamin D3 which is a premium strength dosage suitable men and women.
Added Vitamin K2 for Optimal Benefits– Royal Oak Health's Vitamin D3 with Vitamin K2 (MK7) capsules are made with Vitamin K2 ((menaquinone-7) which has a longer half-life to provide sustained nutrient release supporting calcium absorption, cardiovascular and bone health.
Easy to Swallow with Enhanced Absorption - Our vegetarian Vitamin D3 with K2 capsules have been specifically formulated for optimal absorption. Convenient and Effective: Enjoy the convenience of an easy-to-swallow capsule while supporting bone health, immune function, and overall well-being. *Claims substantiated by the EFSA
All Round Health Support –From Immune system support to bone and joint health. Vitamin D is a key nutrient to keep you feeling and performing your best. It also contributes to normal blood calcium levels, muscle function, and has a role in the process of cell division *Claims substantiated by the EFSA
4 Month Supply – Each pot of Pure Cholecalciferol Vitamin D3 & Vitamin K2 MK7 (menaquinone-7) contains x120 capsules providing you with 4 months of high strength nutrient support.
Award Winning supplements – Founded in 1999 and Winners of the British Made Awards for “Best Food Supplements Manufacturer”. Royal Oak Health produces safe, high quality supplements you can rely on. GMP Certified and Made in Britain every product delivers precisely what is stated on the label

Vitamaze - amazing life

Vitamin D3 K2 5.000 IU & 100ug (MK7) 180 High Strength Vitamin D3 K2 Tablets for 6 Months Supply of Vitamin D3 and K2 for Bone, Teeth, Muscle Function & Immune System. German Quality. Vitamaze®

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Why We Love It

High dosage for strong bones.
No GMOs or unnecessary additives.
Excellent German quality assured production.

Main Highlights

HIGH-DOSAGE: 180 small vegetarian tablets with 5,000 IU (international units) of vitamin D3 and 100 mcg of vitamin K2 (MK7 in all trans form) per tablet. A powerful combination for calcium levels and bones.
FREE FROM: Our product is completely free from genetically modified ingredients and any unnecessary additives. The tablets are vegetarian.
BEST BIO AVAILABILITY: Without the controversial additive magnesium stearate (magnesium salts of fatty acids) for OPTIMAL EFFECTIVENESS. Many other manufacturers use magnesium stearate as a release agent in the production process.
GERMAN QUALITY PRODUCT: We only produce in Germany. Our production is based on the HACCP concept. We work closely with scientists and experts in the development and manufacture of our products.
SATISFACTION GUARANTEE: Satisfied customers are important to us, please feel free to contact us with any questions about our products. We are here for you. Buy today WITHOUT RISK at the best value on the market, we offer 30 days free return policy.

Vitamin D3 K2 MK7 (99.9% All-Trans) with Extra Virgin Olive Oil - 180 Softgels D3 and K2 Vitamin Supplements

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Why We Love It

Enhanced immune and muscle function.
Pure, natural ingredients included.
Sustainable and reliable production.

Main Highlights

HIGH STRENGTH D3 + K2 - Our new Vitamin D3 + vitamin K formula is developed to brighten up your healthy lifestyle. No matter if the sun is out or not, start your day right with the effective combination of the sunshine vitamin D and K2. The vitamins work well together to help maintain normal bones. Vitamin D also helps maintain normal immune and muscle function.
NATURAL VITAMIN D3 + K2 SOFTGELS - Our vitamin D tablets are based on the power of nature! Pure & natural ingredients are our key to providing the perfect support for your everyday life. Our vitamin D3 is obtained naturally from lanolin. In a careful cleaning process, we remove all harmful bacteria and other unwanted substances. You only get the purest vitamin D3 and vitamin K2 MK7 - no additives. To maximise absorption, we have added extra virgin olive oil.
NORDIC BY NATURE - AAVALABS is a family business from Finland. Each d3 and k2 vitamin softgel is produced with Nordic purity and freshness. High quality and transparency about ingredients are a matter of course for us. The vitamin D supplement is GMO, gluten and lactose free. Quality testing by third parties ensures that we meet the highest European standards.
SUSTAINABLE PRODUCTION - The connection to nature and sustainability is very important to us! That is why our vitamins d k2 come from reliable sources. The D3 is sustainably produced from lanolin. A natural fatty substance secreted by the skin glands of sheep. Vitamin K2 comes in many different forms. MK-4 and MK-7 are the most important. Our formula contains MK-7 because it is more bioavailable and stays in the bloodstream longer than MK-4.
OUR QUALITY PROMISE - Each bottle of our high strength vitamin D contains 180 softgels - a 6 month supply. We stand 100% behind our products and want you to love our supplements as much as we do!

Vitamin D3 4000 IU and Vitamin K2 MK7 100μg - 150 Vegetarian Capsules - 5 Month Supply - High Strength Vitamin D K2 Supplement - Made in UK - Nu U Nutrition

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Why We Love It

Unrivalled value for 5 months.
Essential non-GMO sourced nutrients.
Supports normal bone maintenance.

Main Highlights

✔ 𝗨𝗡𝗥𝗜𝗩𝗔𝗟𝗟𝗘𝗗 𝗩𝗔𝗟𝗨𝗘 - We offer a staggering 150 D3 & K2 capsules per bottle for a full 5 month’s supply. Most other supplements offer only half that amount. We offer only the very best ingredients which have been manufactured in the UK to strict guidelines. In addition our capsules are free from common allergens including: milk, cereals, nuts, crustaceans and molluscs, egg and soy.
✔ 𝗘𝗦𝗦𝗘𝗡𝗧𝗜𝗔𝗟 𝗡𝗨𝗧𝗥𝗜𝗘𝗡𝗧𝗦 - We keep it simple. Our Platinum Series Vitamin D3 and K2 supplement offers two essential vitamins in one convenient capsule. Both at optimum dosages to ensure safe and lasting results. We use only premium NON-GMO ingredients from natural sources (lanolin and natto) in our capsules which have also been designed to be easy to take and readily absorbed.
✔ 𝗗𝟑 𝗪𝗜𝗧𝗛𝗢𝗨𝗧 𝗧𝗛𝗘 𝗦𝗨𝗡 - Sunlight is the most common source of Vitamin D but most people don't get enough exposure to it to remain healthy. Our Vitamin D3 from cholecalciferol is the same form of Vit D your skin cells produce naturally when exposed to the sun. Vitamin D3 is vital to our bodies and contributes to the maintenance of normal bones, teeth, muscle function as well as the normal absorption/utilisation of calcium and phosphorus.
✔ 𝗦𝗨𝗣𝗣𝗢𝗥𝗧 𝗙𝗢𝗥 𝗬𝗢𝗨𝗥 𝗕𝗢𝗡𝗘𝗦 - Vitamins D3 and K2 both aid with the maintenance of normal bones as approved and verified by the ESFA (European Food Safety Authority.) The two vitamins work in harmony with one another to ensure that calcium is directed into the bones where it helps improve bone density. Without enough vitamin K2 calcification within the arteries can occur, increasing the risk of heart disease.
✔ 𝗣𝗟𝗔𝗧𝗜𝗡𝗨𝗠 𝗥𝗔𝗡𝗚𝗘 𝗡𝗘𝗫𝗧 𝗟𝗘𝗩𝗘𝗟 𝗦𝗨𝗣𝗣𝗟𝗘𝗠𝗘𝗡𝗧𝗔𝗧𝗜𝗢𝗡 - At Nu U Nutrition your health is important to us. Our research and development team have spent over 12 months developing a range of world-class supplements using only the finest ingredients and most bio-available formulations that are backed by scientific and clinical studies. We do all this because we believe in your health and a Nu U.

High strength Vitamin D3+K2.
Ideal for light-deficient days.
Suitable for vegetarians.

Main Highlights

HIGH STRENGTH: Ultra 4000 IU Vitamin D3 + 100ug K2 MK7 in Convenient Liquid Drops
SUN IN A BOTTLE: Easy way to achieve your daily intake with our Vit D3 + K2 when sunlight is scarce.
EXPERTLY CRAFTED: Our professional formula is backed by our commitment to purity and potency.
SUITABLE FOR: Horbaach Vitamin D3 & K2 is suitable for vegetarians, men & women and free from artificial colours & preservatives.
PACKAGING MAY VARY: We are in the process of updating our packaging. If the product you receive appears different, please rest assured that the benefits remain the same.

Vitamin D3 4000 iu & Vitamin K2 MK7 100μg - 1 Year Supply, 365 Easy-Swallow Vitamin D3 K2 Tablets, 1-A-Day High Strength Vegetarian D3 and K2 Vitamin Supplements, UK Made Vitamin D Tablets

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Why We Love It

Year-long supply in a pouch.
Optimal absorption and efficacy.
Sustainably delivered, allergen free.

Main Highlights

Why Choose Nutrition Geeks Vit D3 K2: Get 2X more than other brands with a year's supply of 365 tablets in a pouch. Each tablet combines Vitamin D 4000 iu with 100μg of K2. Vit D is crucial for bone health and immune support, while Vitamin K2 ensures calcium is deposited in your bones and not the arteries. Our Vitamin D3 and K2 high strength formula is designed for optimal absorption and efficacy.
Easy to Swallow With No Aftertaste: Our Vitamin D K2 tablets have been uniquely formulated to be just 6mm in diameter - so small you won't even notice when you swallow them!
Letterbox Friendly and Great Value for Money: Our slim packaging makes our Vitamin D and K2 easy to store and cost-effective to post unlike other bottled high strength vitamin d & K2 vitamin supplements including vitamin d spray & vitamin d drops.
Vegetarian Vitamin D3 Tablets & Allergen Free: We understand the importance of providing vitamin d supplements that cater to everyone's needs; are sourced & produced ethically AND at an accessible price to customers. Our tablets are Gluten-free, Dairy-free, Cruelty-free.
Scientifically Proven Supplements Uncomplicated, So You Can Get The Most Out of Life. Accessible to Everyone. Delivered To You Sustainably: Good health is a need not a want. We are on a mission to make quality, science backed nutrition sustainably accessible to everyone. Less plastic, less waste. We have also committed to be the UK's leading sustainable supplement provider with a Net Zero target.

8.7

Excellent

We scanned 652 products

We reviewed these offers relevant to the Vitamin D3 High Strength K2 within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Puretrex, Nature Provides, Phoenix Nutrition, WeightWorld, Royal Oak Health, Vitamaze - amazing life, AAVALABS, Nu U Nutrition, Horbäach, Nutrition Geeks, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Vitamin D3 High Strength K2 in the market, we considered we took a deep dive into 3261 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Vitamin D3 + K2 Softgels | High-Strength D3 with MK-7 | Omega-3 DHA/EPA, Astaxanthin, Black Seed Oil, Algal DHA, Immune & Bone Health Support | 180 Softgels. We love many things about this product by Puretrex. What sets it apart from the competition is Boosts immunity effectively. , Supports bone and heart health. , Vegan softgels for everyone. .
The best value product for most shoppers and where user satisfaction is continuously the highest is Vitamin D3 & K2 (MK-7) in Organic Black Seed Oil/Nigella Sativa (30ml) - High Strength Liquid (3000IU), 100% Trans MK-7, Immune, Bone Support, Heart Health, Sublingual, Made in UK by Nature Provides by Nature Provides based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Vitamin D3 High Strength K2 and the best cost-to-value ratio is Vitamin D3 K2 5.000 IU & 100ug (MK7) 180 High Strength Vitamin D3 K2 Tablets for 6 Months Supply of Vitamin D3 and K2 for Bone, Teeth, Muscle Function & Immune System. German Quality. Vitamaze®at Vitamaze - amazing life with a 22% discount.
Our list of the best Vitamin D3 High Strength K2 is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Vitamin D3 High Strength K2 in The UK

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We scanned 652 products

We concluded that: