We Tested 6 Vitamin K in the UK — Scores, Reviews & Prices
We analysed 6 vitamin k using currently available review and product data from public sources. We evaluate each product across six categories — effectiveness, ingredient quality, value for money, side effects, certifications, and overall score — so you can make an informed decision without spending hours reading individual reviews.
🏆 View Best Vitamin K 2026 Rankings →What are the best vitamin k in 2026?
According to the AIScored 0–100 scoring system, the highest-rated vitamin k in the UK are: NOW Foods MK-7 Vitamin K-2 100mcg - 60 Veg Capsules (85.0/100), MK-7 Vitamin K-2, 100 mcg, 120 Veg Capsules (83.0/100), Vitamin K2 + D3, 120 Capsules (80.0/100). Rankings are based on 6 products scored across effectiveness, ingredient quality, value for money, side effects, and certifications.
| Rank | Product | Brand | Score | Price |
|---|---|---|---|---|
| #1 | NOW Foods MK-7 Vitamin K-2 100mcg - 60 Veg Capsules | NOW Foods | 85.0/100 | £21.99 |
| #2 | MK-7 Vitamin K-2, 100 mcg, 120 Veg Capsules | NOW Foods | 83.0/100 | £24.23 |
| #3 | Vitamin K2 + D3, 120 Capsules | Futurebiotics | 80.0/100 | £12.99 |
| #4 | Vitamin K2 + D3, Extra Strength, 120 Capsules | Futurebiotics | 77.0/100 | £14.72 |
| #5 | Vitamin K2 MK-7, 100 mcg, 240 Capsules | Nutricost | 76.0/100 | £14.71 |
| #6 | Vitamins D and K with Sea-Iodine, 60 Capsules | Life Extension | 73.0/100 | £14.36 |
6 products
Which vitamin k rank highest in 2026?
View full rankings →
NOW Foods MK-7 Vitamin K-2 100mcg - 60 Veg Capsules
NOW Foods
NOW Foods MK-7 Vitamin K-2 100mcg is a well-regarded standalone K2 supplement using the branded MenaQ7® menaquinone-7 fo...
MK-7 Vitamin K-2, 100 mcg, 120 Veg Capsules
NOW Foods
The MenaQ7® form sets this apart from budget K2 alternatives. It is a patented, clinically studied MK-7 derived from nat...
Vitamin K2 + D3, 120 Capsules
Futurebiotics
5,000 IU of cholecalciferol paired with 90 mcg of K2 as MK-7 — this is the combination that actually makes sense. MK-7 i...
Vitamin K2 + D3, Extra Strength, 120 Capsules
Futurebiotics
At 10,000 IU of cholecalciferol paired with 120 mcg of MK-7 menaquinone, this is a therapeutic-strength formula built fo...
Vitamin K2 MK-7, 100 mcg, 240 Capsules
Nutricost
At 100 mcg of MK-7 per softgel across 240 capsules, this is consistently cited as one of the best-value K2 options avail...
Vitamins D and K with Sea-Iodine, 60 Capsules
Life Extension
5,000 IU of D3 paired with 2,100 mcg of vitamin K — including MK-7, confirmed by reviewers — is a genuinely well-thought...
What are the most popular uses for vitamin k?
Filter products by common goals and user profiles in this category.
How do the top vitamin k compare head-to-head?
See all side-by-side comparisons between vitamin k products.
How does AIScored compare vitamin k?
We collect currently available review and product data from public sources to build a complete comparison baseline.
We read every review, check ingredient labels, fillers, and certifications, then generate an unbiased summary.
Products are scored 0-100 across evidence-based categories, making it easy to compare at a glance.
What should you look for when buying vitamin k?
Choosing the right vitamin k can be overwhelming with hundreds of options on the UK market. Here are the key factors we analyse when scoring each product:
Bioavailability & Forms
Not all ingredient forms are equally effective. We check which forms are used and whether they're backed by research for optimal absorption and bioavailability.
Clean Label & Fillers
Many products contain unnecessary fillers, artificial colours, added sugars, and bulking agents. We flag products with excessive additives and reward clean formulations.
Third-Party Testing
Independent lab testing verifies that what's on the label is actually in the product. Products with third-party certifications (NSF, USP, Informed Sport) score higher in our rankings.
Value per Serving
The cheapest option isn't always the best value. We calculate the cost per serving and weigh it against ingredient quality, dosage, and overall effectiveness reported by users.
How Our Scoring Works
Each product is scored 0-100 across evidence-based categories. An overall score of 80+ indicates a product we'd recommend to most people. Scores of 60-79 are solid choices with some trade-offs, while anything below 60 has significant drawbacks reported by users. Our scores are recalculated regularly as new reviews and ingredient data come in.
Frequently Asked Questions
Where do you get your reviews?
We aggregate publicly available review and product data from retailer pages, communities, and specialist sources. We do not use manufacturer-provided testimonials as evidence.
How often are scores updated?
We re-analyse reviews and update scores regularly. Product pages show the date of the latest analysis.
Do you receive products for free?
No. AIScored does not accept free products or sponsored placements. Our revenue comes from affiliate links, which do not influence our scores.
What is the best vitamin k in 2026?
Based on our analysis of 6 products, the top rated vitamin k is NOW Foods MK-7 Vitamin K-2 100mcg - 60 Veg Capsules with a score of 85.0/100.
How many vitamin k products have you reviewed?
We have analysed 6 vitamin k products, scoring each on effectiveness, ingredient quality, value for money, side effects, and certifications.
What other categories are related to vitamin k?
Disclaimer: AIScored provides research-backed summaries based on publicly available reviews and product information. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Prices are updated regularly but may differ at the time of purchase. Affiliate links may earn us a commission at no extra cost to you.