Vitamin D3 2000iu - 60 Caps
by Viridian
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Viridian's Vitamin D3 2000 IU is a vegan-friendly supplement sourced from lichen, positioning it above most D3 products which use lanolin (sheep wool). Best for Vegans and vegetarians needing a plant-derived D3 source and UK residents supplementing during low-sunlight winter months.
According to the AIScored 0–100 scoring system, Vitamin D3 2000iu - 60 Caps by Viridian scores 79.0/100, ranking #16 out of 35 products in Vitamin D (2026). Strongest category: Side Effects (93.0/100). Weakest: Value For Money (65.0/100).
Is Vitamin D3 2000iu - 60 Caps worth buying?
“Viridian's Vitamin D3 2000 IU scores 79/100 and is one of the few D3 supplements sourced from lichen rather than lanolin, making it genuinely vegan-friendly. Users consistently report better energy levels and improvements to dry skin and aches, without the artificial fillers found in most D3 products.”
What Do Reviewers Say About Vitamin D3 2000iu - 60 Caps?
Sample excerpts from currently available source material used in this product analysis.
"Cercavo un integratore naturale adatto alle esigenze alimentari vegane di mio cognato e ho scelto queste pastiglie multivitamine Viridian. Dopo averle provate per alcune settimane, posso dire che è stato un acquisto azzeccato. Le pastiglie..."
"I usually purchase these from the high street but paid the same online and also had speedy delivery too. Hard to rate the ‘flavour’ as you can’t taste anything and taking a tablet is not something you do for flavour."
"Prodotto di grande qualità e ottimo rapporto qualità prezzo. Il dosaggio ottimale di 2000iu è inoltre un altro punto a favore per l assunzione giornaliera di questo importante nutriente. Consigliato per chi cerca un ottimo integratore di Vi..."
"Ho scoperto di avere una carenza di vitamina D3 dopo aver fatto le analisi del sangue. Fra le tante alternative presenti sul mercato, ho scelto questo prodotto, su consiglio della mia dottoressa, in quanto non testate su animali e completam..."
"Another fantastic Viridian product. I rarely buy vitamins and minerals from any other organisation - I trust Viridian to use the best ingredients and to not fill their products with nasty rubbish. This vit d improved my energy on the day I..."
How does Vitamin D3 2000iu - 60 Caps score?
Detailed score breakdown and key findings from our analysis of 13 reviews across 1 source.
Pros
- +Lichen-sourced D3 — genuinely vegan, rare among D3 supplements
- +Clean formula: no artificial fillers, GMOs, or palm oil; 100% active ingredients
- +Multiple reviewers report improved energy, less dry skin, and reduced aches
- +Small, easy-to-swallow capsules praised for convenience
- +Trusted UK ethical brand with 130 quality checks and cruelty-free certification
Cons
- -2000 IU may be insufficient for correcting significant deficiency — clinicians often prescribe 4000–5000 IU
- -Premium pricing versus non-vegan D3 alternatives at equivalent doses
- -No explicit third-party testing (e.g. Informed Sport, NSF) despite quality claims
- -Contains macadamia nut — relevant allergen for a small subset of users
Best For
Watch Out
- !Clinically deficient individuals may need higher doses (4000+ IU) — consult a GP
- !Some reviews appear to be for a different Viridian multivitamin product and should be discounted
- !Macadamia nut allergen listed — check if relevant before purchasing
- !No third-party purity certification despite brand quality claims
What is Vitamin D3 2000iu - 60 Caps?
Vitamin D3 2000iu - 60 Caps is a vitamin d product by Viridian in capsule form, scoring 79.0/100 on AIScored.
- • Each capsule provides 2000 IU of Vitamin D3 sourced from lichen, making it a vegan alternative to traditional animal-derived supplements.
- • Vitamin D contributes to normal bone and teeth health, muscle function, and immune system support.
- • The formula was developed with clinically studied ingredients and has been shown to increase blood serum levels of Vitamin D in research at the University of Surrey.
- • Free from artificial fillers, GMOs, and palm oil, and not tested on animals, with 100% active ingredients.
- • Every Viridian supplement goes through 130 quality checks and is ethically sourced from seed to shelf.
- • Their customer service team and qualified nutritionists are based in Northamptonshire, and the range is stocked in independent health stores across the UK.
Is Vitamin D3 2000iu - 60 Caps Independently Tested?
No Third-Party Testing Visible
We could not find evidence of independent third-party testing for this product. This doesn't mean it's unsafe, but independent verification provides additional assurance.
How We Score Supplements
Our methodology analyses review data, ingredient science, and product information, then scores each product on a 0-100 scale across evidence-based categories:
Effectiveness
How well the product delivers its claimed benefits, based on reviews and ingredient evidence.
Ingredient Quality
Bioavailable forms, clinically effective dosages, clean label, minimal fillers.
Value for Money
Price relative to ingredient quality, dosage count, and effectiveness.
Side Effects Profile
Higher score = fewer side effects. 100 means virtually no adverse reactions reported.
Certifications & Testing
Third-party lab testing, GMP certification, and independent quality verification.
Overall Score
Weighted combination of all factors. Our bottom-line recommendation.
Price History (90 days)
Quick Facts
- Form
- Capsule
- Vegan
- No
Frequently Asked Questions
Is Vitamin D3 2000iu - 60 Caps worth buying in 2026? ▼
What is the best price for Vitamin D3 2000iu - 60 Caps in the UK? ▼
What are the pros and cons of Vitamin D3 2000iu - 60 Caps? ▼
Is Vitamin D3 2000iu - 60 Caps third-party tested? ▼
What the Data Says About Vitamin D
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 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. Affiliate links may earn us a commission at no extra cost to you.
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