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Nutri Advanced Vitamin D3 with K2 Liquid Drops 30ml vs Vitamin K2 + Vitamin D3, 120 Capsules

Side-by-side comparison of scores, ingredients, prices and real customer feedback for Nutri Advanced Vitamin D3 with K2 Liquid Drops 30ml and Vitamin K2 + Vitamin D3, 120 Capsules.

Last verified: 07 Apr 2026 · Based on 77 reviews

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83.0
Quick Answer

Nutri Advanced Vitamin D3 with K2 Liquid Drops 30ml scores 83.0/100 vs Vitamin K2 + Vitamin D3, 120 Capsules at 81.0/100. Nutri Advanced Vitamin D3 with K2 Liquid Drops 30ml wins on ingredient quality, side effects, certifications. Vitamin K2 + Vitamin D3, 120 Capsules is stronger on effectiveness and value for money.

Which is better: Nutri Advanced Vitamin D3 w... or Vitamin K2 + Vitamin D3, 12...?

Nutricost wins on value and dose: £12.96 for a therapeutic 5000 IU serving, versus Nutri Advanced's £19.95 for just 1000 IU per dose. Choose Nutri Advanced if you want a pristine formula with zero fillers or need flexible liquid dosing; otherwise, Nutricost delivers better practicality for the price.

— AIScored Editorial Team

How Do the Scores Compare?

Nutri Advanced Vitamin D3 w...
Vitamin K2 + Vitamin D3, 12...
Nutri Advanced Vitamin D3 with K2 Liquid Drops 30ml
Nutri Advanced Vitamin D3 w...
Nutri Advanced
 Vitamin K2 + Vitamin D3, 120 Capsules
Vitamin K2 + Vitamin D3, 12...
Nutricost
Overall Score 83.0 81.0
Effectiveness 75.0/100 82.0/100
Best
Ingredient Quality 93.0/100
Best
 84.0/100
Value for Money 84.0/100 91.0/100
Best
Side Effects 91.0/100
Best
 87.0/100
Certifications 88.0/100
Best
 42.0/100
Best Price £19.95 Amazon UK → £12.96 iHerb →
Cheapest
Price per Serving £0.06 330 servings N/A
Form Liquid Drops None
Dose 1000 IU D3 + 45mcg K2 MK-7 per 3 drops None
Third-Party Tested ✓ Yes ✗ No
Reviews Analysed 28 49

Nutri Advanced Vitamin D3 with K...

Pros

  • ✓Exemplary clean formulation: MCT oil carrier, natural orange flavour, and vitamin E stabiliser only — no fillers, bulking agents, or artificial additives
  • ✓MK-7 form of K2 (longest half-life, best clinical evidence) paired with D3 for synergistic bone mineralisation and cardiovascular protection
  • ✓Liquid drops allow precise, flexible dose adjustment — practical for those with confirmed deficiency needing higher therapeutic amounts
  • ✓330 servings per bottle provides outstanding cost-per-serving for a practitioner-grade, third-party tested product

Cons

  • ✗1000 IU D3 per 3-drop serving is a low baseline dose — those with confirmed deficiency will need multiple servings daily and should monitor blood levels
  • ✗Not vegan: D3 is lanolin-derived from sheep's wool; liquid format may also require careful storage after opening
  • ✗Contains coconut-derived MCT oil, which may be a concern for individuals with coconut sensitivity
  • ✗Premium practitioner positioning means it is pricier per bottle than mainstream pharmacy alternatives despite similar active ingredients

Best For

People who struggle swallowing capsules or tablets Individuals with confirmed vitamin D deficiency needing flexible therapeutic dosing Those seeking combined D3+K2 support for bone density and cardiovascular health Healthcare practitioners recommending clean-label supplements to patients Adults over 50 at higher risk of D3 deficiency and bone loss
Amazon UK £19.95
View full review →

Vitamin K2 + Vitamin D3, 120 Capsules

Pros

  • ✓K2 is supplied as MK-7 (menaquinone-7) — the longer-acting form with significantly better bioavailability than the cheaper MK-4 used in many budget products
  • ✓5000 IU D3 is a genuinely effective dose for correcting deficiency, not the token 400–1000 IU found in most multivitamins
  • ✓Softgel format in sunflower oil delivers fat-soluble vitamins in their ideal absorption medium
  • ✓120 softgels at four months' supply represents strong value — reviewers repeatedly flag the price-to-quantity ratio as a key reason to buy

Cons

  • ✗No verified third-party batch testing — the product specs confirm third_party_tested is false, despite some label copy referencing lab testing
  • ✗Gelatin softgel is not suitable for vegans or vegetarians
  • ✗5000 IU daily is a high-dose protocol; without blood monitoring it is easy to overshoot optimal levels long-term
  • ✗K2 at 100 mcg is workable but some clinical protocols use 180–200 mcg alongside high-dose D3

Best For

Adults with confirmed or suspected vitamin D deficiency who want a cost-effective high-dose protocol People over 40 focused on directing calcium to bone rather than arteries Anyone already buying separate D3 and K2 supplements and wanting to consolidate for less money
iHerb £12.96
View full review →

What does the data say about Nutri Advanced Vitamin... vs Vitamin K2 + Vitamin D...?

Both score 83/100 but differ sharply in dose and format. Nutri Advanced (£19.95) delivers 1000 IU D3 with 45mcg K2 MK-7 in liquid drops—exceptionally clean, with just MCT oil, orange flavour, and vitamin E. Nutricost (£12.96) offers capsules with 5000 IU D3 and 100mcg K2 MK-7, a proper therapeutic dose. Nutricost offers better value; Nutri Advanced justifies its premium through purity and dosing flexibility.

Pick Nutri Advanced if you struggle swallowing capsules or want to adjust doses day-to-day. You'll need multiple servings daily to reach therapeutic levels. Choose Nutricost for a single, fixed 5000 IU dose and long-term consistency—it's £7 cheaper per bottle.

Neither is vegan: Nutri Advanced uses lanolin-derived D3, Nutricost uses gelatin capsules. Nutri Advanced carries confirmed third-party testing; Nutricost's testing is unverified. Nutricost's sunflower oil aids fat absorption without needing food. Store Nutri Advanced carefully after opening.

Nutri Advanced Vitamin D3 with K2 Liquid Drops 30ml Winner 83.0/100

Nutri Advanced Vitamin D3 with K2 Liquid Drops is a practitioner-grade UK supplement combining cholecalciferol (D3) and menaquinone-7 (the preferred long-acting form of K2) in an MCT oil base — one of the cleanest supplement formulations on the UK market.

Effectiveness
Nutri Advanced V..
75.0/100
Vitamin K2 + Vit..
82.0/100
Ingredient Quality
Nutri Advanced V..
93.0/100
Vitamin K2 + Vit..
84.0/100
Value for Money
Nutri Advanced V..
84.0/100
Vitamin K2 + Vit..
91.0/100
Side Effects
Nutri Advanced V..
91.0/100
Vitamin K2 + Vit..
87.0/100
Certifications
Nutri Advanced V..
88.0/100
Vitamin K2 + Vit..
42.0/100

What are the key differences?

Nutri Advanced Vitamin .. is best for: People who struggle swallowing capsules or tablets, Individuals with confirmed vitamin D deficiency needing flexible therapeutic dosing
Vitamin K2 + Vitamin D3.. is best for: Adults with confirmed or suspected vitamin D deficiency who want a cost-effective high-dose protocol, People over 40 focused on directing calcium to bone rather than arteries

Frequently Asked Questions

Which is better, Nutri Advanced Vitamin D3 with K2 Liquid Drops 30ml or Vitamin K2 + Vitamin D3, 120 Capsules? ▼
Nutri Advanced Vitamin D3 with K2 Liquid Drops 30ml scores 83.0/100 overall while Vitamin K2 + Vitamin D3, 120 Capsules scores 81.0/100. Nutri Advanced Vitamin D3 with K2 Liquid Drops 30ml comes out ahead, scoring higher on effectiveness (75.0 vs 82.0). Nutri Advanced Vitamin D3 with is best suited for People who struggle swallowing capsules or tablets and Individuals with confirmed vitamin D deficiency needing flexible therapeutic dosing. Vitamin K2 + Vitamin D3, 120 C is better for Adults with confirmed or suspected vitamin D deficiency who want a cost-effective high-dose protocol and People over 40 focused on directing calcium to bone rather than arteries.
Is Nutri Advanced Vitamin D3 with K2 Liquid Drops 30ml worth the price compared to Vitamin K2 + Vitamin D3, 120 Capsules? ▼
Nutri Advanced Vitamin D3 with K2 Liquid Drops 30ml costs £19.95 while Vitamin K2 + Vitamin D3, 120 Capsules is £12.96. For value, Nutri Advanced Vitamin D3 with K2 Liquid Drops 30ml scores 84.0/100 vs Vitamin K2 + Vitamin D3, 120 Capsules's 91.0/100. Vitamin K2 + Vitamin D3, 120 Capsules delivers better value relative to its quality.
Which has fewer side effects? ▼
Nutri Advanced Vitamin D3 with K2 Liquid Drops 30ml scores 91.0/100 for side effects (higher means fewer reported issues) while Vitamin K2 + Vitamin D3, 120 Capsules scores 87.0/100. Reviewers report fewer side effects with Nutri Advanced Vitamin D3 with K2 Liquid Drops 30ml. For certification and testing, Nutri Advanced Vitam scores 88.0/100 vs Vitamin K2 + Vitamin's 42.0/100. Always consult a healthcare professional before starting any supplement.

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What the Data Says

Why do 97% of UK vitamin D supplements lack third-party certification?

Only 1 out of 35 vitamin D products we scored has independent certification. That's 97% without any third-party verification of purity, potency, or label accuracy.

This is worse than most supplement categories. The reason is simple: UK law doesn't require it, and testing costs money. Most vitamin D brands sell on price alone, especially in the D3-only space where the raw ingredient is cheap. Certification adds cost that budget brands won't absorb.

What does this mean for you? Without third-party testing, you're trusting the manufacturer's label claims. A 2021 study in Nutrients found that vitamin D supplements varied from 52% to 135% of their labelled dose. That's a problem if you're relying on a specific daily intake.

Among the 35 products we scored, the top performers are all from brands with strong manufacturing track records: NOW Foods D3 5000 IU and Thorne Vitamin D + K2 both score 87/100 overall. Thorne holds the highest certification score in the category at 85/100. If independent testing matters to you, that's the product to look at.

Do you need vitamin K2 with high-dose vitamin D?

Probably yes at high doses, and our data backs the pairing. Thorne Vitamin D + K2 Liquid is the only D3+K2 combo product in our 35-product database that scores 87/100 overall, matching the top-ranked D3-only options from NOW Foods. It also holds the highest certification score in the category at 85/100.

Here's the science behind it. Vitamin D increases calcium absorption from food. Vitamin K2 activates proteins that direct that calcium into bones and teeth, keeping it out of your arteries and soft tissue. At standard doses (1000-2000 IU daily), most people get enough K2 from diet to handle the extra calcium. At 4000-5000 IU daily, the calcium load increases enough that K2 becomes a more serious consideration.

The Endocrine Society doesn't yet include K2 in its vitamin D guidelines. But a growing body of research, including a 2019 meta-analysis in International Journal of Molecular Sciences, shows the D3+K2 combination improves bone mineral density more than D3 alone.

If you eat K2-rich foods regularly (natto, hard cheese, egg yolks, chicken liver), a standalone D3 product like NOW Foods D3 5000 IU 360 Softgels (87/100) is a solid choice. If your diet is low in K2, or you're taking 4000+ IU of D3 daily, Thorne D + K2 covers both bases in one product.

Disclaimer: AIScored provides data-driven comparisons based on publicly available reviews. This is not medical advice. Affiliate links may earn us a commission at no extra cost to you.

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