Best 7 Vitamin D3 and K2 Supplements UK

Vitamin D deficiency is a global health issue, and according to the National Diet and Nutrition Survey, 20% of people in the UK have it. Inadequate exposure to sunlight is the biggest culprit, followed by low dietary intake. The aged people are at a higher risk of developing vitamin D deficiency. 

Cholecalciferol (D3), the more effective form of vitamin D, is associated with bone health, muscle health, gene expression and proper immune system functioning. In males, D3 is linked to testosterone synthesis as Leydig cells of the testes that produce testosterone are sensitive to vitamin D.

Likewise, vitamin K2 is another fat-soluble vitamin associated with blood clotting, bone health, and heart health. It is involved in calcium homeostasis, as research shows it improves bone density and lowers the risk of bone fractures.

Why is the D3+K2 combo popular? 

Both vitamins have a synergistic relationship when it comes to calcium metabolism. D3 boosts calcium absorption, while K2 ensures that this absorbed calcium is adequately deposited in the bones and not at other locations like arteries. So, this synergistic relationship improves bone health and regulates the calcium levels in the blood.

One must have adequate calcium levels in the blood to benefit from the D3+K2 combo. For someone worried about low calcium levels, Welzo provides a variety of calcium supplements. Visit our page to explore the best calcium supplements in the UK. 

Welzo’s Top Picks

To facilitate the users, we explored the dietary supplement market to find the best D3+K2 combinations. We targeted the products that provide enough doses of each vitamin for different types of people and provided the best value for money. Here is a brief description of the seven top-notch combos in the market.

Products Summary

Best For Nature Lovers: Nature’s Answer D3+K2 Best Lower Dose Option D3: Doctors best K2+ D3 For Now Fans: Now Supplements Mega D3 & MK-7 Best Overall: Vitamin D3+K2 by Transparent Labs Best Budget Product: Vitamin D3+K2 combination by Bulksupplements Best Formula: Vitamin D+K by Legion Best Vegan Product: Ora Sol Food

Best For Nature Lovers: Nature’s Answer D3+K2

Product specifications 

Price & availability: £28.41 (buy Nature’s Answer D3+K2 at Welzo)

Packing size: 15ml

Form: Oral drops

Dose of D3: 25 mcg (1000 IU)

Dose of K2: 120mcg

Vegan friendly: Yes

Third-party tested: No

Serving size: 2 drops per day

User rating: 5/ 5 (based on 80 reviews at Welzo)

Pros	Cons
Just two drops daily required  Contains low yet acceptable doses of D3 Vegan Unflavoured and gluten free Cost-effective	Lower doses of D3 No third-party testing

Why do we choose it?: Nature's Answer has over 50 years of experience manufacturing dietary supplements. Nature's Answer Vitamin D3 and K2 Liquid Extract Oral Drops is one of their best products and offers a decent amount of vitamins at a reasonable price. It is free from artificial sweeteners, gluten and synthetic dyes, which makes it a sensible choice for people with allergies. As vitamin K2 is at slightly higher doses than the daily requirement, it is suitable for people with higher K2 needs. The flavourless drops are very easy to take. The smaller packing size is a drawback, containing just 15ml of the extract.

Ready to elevate your bone health? Discover the benefits of Nature’s Answer D3+K2 now!

Best Lower Dose Option D3: Doctors Best K2+ D3

Product specifications 

Price & availability: £23.99 (buy Doctors best K2+ D3 at Dolphin Fitness)

Packing size: 60 capsules 

Form: Capsules 

Dose of D3: 25 mcg (1000 IU)

Dose of K2: 180 mcg

Vegan friendly: No

Third-party tested: No

Serving size: 1 capsule daily

User rating: No reviews available

Pros	Cons
Lower dose of D3 for people with lower requirements Non-GMO, soy and gluten-free formula suitable for vegetarians	Costly  High doses of K2 that can't be split  No user reviews available It has added sugars, which some people don't love to have.

Why do we choose it?: Doctors Best Natural Vitamin K2 MK-7 with MenaQ7 plus D3 is the best option for people looking for lower doses of vitamin D3 and higher doses of K2. Each serving provides 25mcg (1000 IU) of D3 and 180mcg of K2. Despite the lack of third-party testing, the product is suitable for vegetarians. The only drawback is that higher doses of vitamin K2 can't be split and are unnecessary for everyone. The large packing size containing 60 servings suffices for two months at a reasonable price. Being free from gluten, soy and GMOs, it is suitable for vegetarians but not for vegans. 

ake charge of your skeletal wellness – make Doctors Best K2+ D3 a part of your daily routine!

For Now Fans: Now Supplements Mega D3 & K2 

Product specifications 

Price & availability: £14.43 (buy Now Supplements Mega D3 & K2 at Welzo)

Packing size: 120 capsules 

Form: Capsules 

Dose of D3: 25 mcg (1000 IU)

Dose of K2: 45 mcg

Vegan friendly: No

Third-party tested: yes

Serving size: 1 capsule 

User rating: 5/ 5 (based on 80 reviews at Welzo)

Pros	Cons
Less cost per serving Just one capsule required daily	Not vegan-friendly Has lower doses of both vitamins unsuitable for deficient people Has higher doses that can't be split

Why do we choose it?: If you are using Now Foods products and searching for a D3 + K2 combo by this company, there is good news for you. Each capsule provides 25mcg (1000 IU) of D3 and 45mcg of K2, which is smaller, but you can take more capsules to add more. The products by Now Foods are third-party tested, a factor critically important for vitamin supplements. A large packing size is very convenient as a single pack lasts four months, given that it is kept in a dry and cool place after opening. 

Although quality tested and made in advanced facilities, it is unsuitable for a vegan. Moreover, it doesn't contain eggs, gluten, soy, milk, or nuts; it is prepared in the facilities that process those allergic ingredients. So, people who are allergic to them must choose another product.

Join countless others in prioritizing bone health – order Now Supplements Mega D3 & K2 and embrace vitality today!

Best Overall: Vitamin D3+K2 by Transparent Labs 

Product specifications 

Price & availability: $29.99 (buy Vitamin D3+K2 by Transparent Labs at the official website)

Packing size: 120 capsules (another packing with 60 softgels available)

Form: Capsules/ softgels

Dose of D3: 125 mcg (5000 IU)

Dose of K2: 100mcg

Vegan friendly: No

Third-party tested: Yes

Serving size: 1 capsule daily

User rating:  4.5/ 5 (based on 78 Reviews at the official website)

Pros	Cons
Contains more than 100% DV of D3 and high amount of K2 Large packing size Great value for money	Not vegan-friendly.

Why do we choose it?: Transparent Labs is a trusted company that produces supplements that are not only third-party tested but are science-backed and packed with adequate doses of the required vitamins. Each serving provides 125mcg of D3, far more than the daily value of 800 IU. The dose of K2 is just enough to meet the daily requirements. So, it is the best choice for people with a higher need for vitamin D.

It has no artificial sweeteners or colouring agents and offers excellent value for money as the per-serving cost is just $0.50. The large packing size lasts for months. However, its capsules are made of gelatin, a deal-breaker factor for the vegans. Despite this drawback, we ranked it in the top position due to its high-quality ingredients, reasonable price, and transparency.

Experience the power of synergistic bone support – try Vitamin D3+K2 by Transparent Labs today!

Best Budget Product: Vitamin D3+K2 combination by Bulksupplements 

Product specifications 

Price & availability: $27.96 (buy Vitamin D3+K2 combination by Bulksupplements at the official website)

Packing size: 365 softgels

Form: Softgels

Dose of D3: 187.5 mcg (7500 IU)

Dose of K2: 100mcg

Vegan friendly: No

Third-party tested: Yes

Serving size: 1 softgel daily

User rating: 5/ 5 (based on just 1 review at the official webpage)

Pros	Cons
Very high dose of D3 Cost-effective Hundreds of servings in a single pack	Very high dose of D3 is unnecessary for many people  Not vegan-friendly.

Why do we choose it?: Bulk supplements offer the best budget products. This product provides more than 800% DV of vitamin D and 100mcg of K2 per serving and comes in a huge packing size that keeps things going for one year. With a minimal per-serving cost, it is one of the cheapest options in the market. It is not vegan-friendly but free from dairy, gluten, soy yeast, and added sugars. The company offers attractive subscription plans to save up to 10% for regular users.

Unlock optimal bone health with Vitamin D3+K2 combination by Bulksupplements– take the first step towards vitality!

Best Formula: Vitamin D+K by Legion 

Product specifications 

Price & availability: $39.99 (buy Vitamin D+K by Legion at the official webpage)

Packing size: 60 capsules 

Form: Capsules

Dose of D3: 50 mcg (2000 IU)

Dose of K2: 100mcg of K1 and 180mcg of K2

Vegan friendly: yes

Third-party tested: Yes

Serving size: 1 capsule daily 

User rating: 5/ 5 (based on 195 reviews at the official webpage)

Pros	Cons
100% natural High doses of vitamin K1 & K2	Costly  Doses unnecessarily high for many people

Why do we choose it?: We called it the best formula product as it is the only natural product we know about that contains K1. Each capsule provides a moderate 50mcg (2000 IU) of D3, less than that present in other supplements but more than enough to provide the daily requirement. The higher dose of K2 is, however, unnecessary for many. The price tag is higher, and the company offers attractive subscription plans to compensate for the higher process.

It is thoroughly tested for purity and is backed by research (which the Legions publish next to each product). The large packing size has enough capsules to last for two months. The company offers a money-back guarantee and ensures that the product is free from chemical junk and artificial dyes, which makes it a reasonable choice.

Don't wait to boost your bone strength – choose Vitamin D+K by Legion and feel the difference!

Best Vegans Product: Ora Sol Food 

Product specifications 

Price & availabiity: $23.99 (buy Ora Sol Food D3+ K2 at the official page)

Packing size: 30 tablets 

Form: Tablets 

Dose of D3: 125 mcg (5000 IU)

Dose of K2: 100mcg 

Vegan friendly: yes

Third-party tested: Yes

Serving size: 1 Tablet daily 

User rating: 5/ 5 (Based on 57 reviews at the official webpage. 

Pros	Cons
Contains higher amounts of both vitamins Attractive subscription plans Vegan friendly Organic ingredients without artificial flavours and fillers	Contains erythritol Costly

Why do we choose it?: Ora Sol Food by Ora Organic is the best choice for someone looking for an organic and vegan combination of D3 and K2 and is willing to pay a higher price. Its one chewable tablet provides 100mcg of K2 and 125mcg of D3, which is more than enough to meet needs and treat the deficiencies. It is free from artificial fillers and flavours and has purely vegan and organic ingredients, as vitamin K2 is obtained from chickpeas while D3 is obtained from the lichen. 

Invest in your wellness journey with Ora Sol Food D3+K2– your bones will thank you!"

The absence of artificial fillers, sweeteners, flavours, added sugars, tree nuts, GMO, soy, gluten and dairy makes it a perfect choice for vegans. Although price is a limiting and often a deal-breaker factor, the company does offer prescription plans to save up to 20%.

Frequently Asked Questions

What are the benefits of taking D3 and K2 together? 

Both vitamins complement each other's actions, and one regulates some aspects of the functionality of the other. Having too much or too little of one negatively influences the functionality of the other. Vitamin D boosts calcium absorption, while vitamin K2 ensures that this absorbed calcium is deposited in the bones.. 

Who needs to avoid D3 & K2? 

People who don't have a deficiency of both vitamins, are using blood thinners, have scheduled surgery ahead of time, or have any clotting disorder or bone health issues must consult their healthcare provider before choosing them. Both are fat-soluble vitamins, and excessive supplementation is contraindicated.

Is it healthy to take D3 & K2 regularly? 

Daily use of this combination is recommended for people with deficiencies. Make sure the doses are tailored to the health conditions and needs. Don't go for this combination if there is a deficiency of just one of these vitamins; instead, choose a solo supplement.

Which foods are rich in D3 & K2? 

The most important dietary sources of vitamin K2 are Brussels sprouts, collard greens, turnip greens, edamame, broccoli, kale, chicken and pasteurised eggs. Likewise, the important dietary sources of vitamin D are pasteurised eggs, carrots, broccoli, spinach, cheese, fortified foods, mushrooms, seafood and liver.

What is the best way and time to take the D3 K2 combo?

Both are fat-soluble vitamins; taking them with a fatty meal improves absorption and utilisation. Therefore, it is advised to take them with a fatty snack or a fat-containing meal. For smooth blood levels, it is recommended that the supplement be taken at the same time each day.

How long does the K2+D3 combo take to work? 

It depends upon the health status. The results are evident within a few days for people with deficiency symptoms. However, one must stay prepared and wait six weeks or more before deciding. Vitamin supplements are not regular medicines and are not intended to treat a particular health condition. They improve health and overall well-being when used continuously for a long time.

Bottom line

Vitamin D3 and K2 are critical to calcium metabolism, health and wellness. The combination products improve cardiovascular well-being and bone health, particularly for athletes. The impact of supplementation on people with normal levels of both is minimal. However, this combination makes a lot of difference for people with deficiency symptoms. Therefore, it is necessary to adopt a personalised approach and choose the supplement after measuring the levels of these vitamins in the blood and consulting the health professionals.

Welzo’s Vitamin D Blood Test is useful for diagnosing vitamin D deficiency. It is an accurate test that provides results within two days and allows you to check if you have vitamin D deficiency.