Vitamin D3, 2,000 IU, 120 Capsules
by NOW Foods
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NOW Foods delivers 2,000 IU of cholecalciferol — the most bioavailable D3 form — dissolved in extra virgin olive oil and safflower oil, which aids absorption of this fat-soluble vitamin. Best for Adults in northern latitudes supplementing through autumn and winter when UV index is too low for skin synthesis and People maintaining D3 levels after correcting a confirmed deficiency — 2,000 IU suits prevention, not aggressive repletion.
According to the AIScored 0–100 scoring system, Vitamin D3, 2,000 IU, 120 Capsules by NOW Foods scores 79.0/100, ranking #17 out of 35 products in Vitamin D (2026). Strongest category: Side Effects (91.0/100). Weakest: Certifications (48.0/100).
Is Vitamin D3, 2,000 IU, 120 Capsules worth buying?
“NOW Foods Vitamin D3 2000 IU earns 83/100 because it delivers cholecalciferol in an olive oil base—a more absorbable form than dry tablets—in tiny softgels with zero taste or smell. For around £5–6 a bottle that lasts several months, it's exceptional value and genuinely effective for daily vitamin D maintenance without any hassle.”
What Do Reviewers Say About Vitamin D3, 2,000 IU, 120 Capsules?
Sample excerpts from currently available source material used in this product analysis.
"Good vitamin D. Excellent quality from this company. They have a lot of vitamins and supplements, I really like them. The ingredients are perfectly selected. Health in every capsule. Don't skip a dose. The capsule size is very convenient. T..."
"Good. I was pleased with the quality. The ingredients are natural. Vitamin D is especially relevant and beneficial for health these days. The capsules are small, and the dosages are varied, making it easy to find the right one. It boosts im..."
"Really jelps me sleep, I. Vitamin D3, also known as cholecalciferol, is a form of vitamin D that helps the body absorb calcium and phosphorus for strong bones, supports the immune system, and is involved in muscle and heart health. It can b..."
"Reliable Vitamin D3 for daily support. I have been buying this vitamin D3 for several times now — both for myself and for my mother. I really like the quality and convenient dosage of 2000 IU. The capsules are small, easy to swallow and wel..."
"The quality of the brand is proven. The composition is safe, contains high-quality ingredients. The packaging is average. The size of the capsules is small, the taste is neutral. The dosage is preventive, for daily use. Vitamin D3 is import..."
How does Vitamin D3, 2,000 IU, 120 Capsules score?
Detailed score breakdown and key findings from our analysis of 50 reviews across 1 source.
Pros
- +Cholecalciferol in oil suspension (EVOO + safflower) — fat-dissolved delivery improves bioavailability of this fat-soluble vitamin
- +2,000 IU is a well-judged daily maintenance dose for adults with limited sun exposure, five times the basic RDA
- +Small softgels praised across dozens of reviews as easy to swallow, tasteless, and odourless
- +Exceptionally clean label — no unnecessary additives, Non-GMO, Halal, Kosher certified
- +Consistent praise for value: 120 capsules at a price point well below most pharmacy alternatives
Cons
- -Bovine gelatin capsule — not suitable for vegans or vegetarians
- -No vitamin K2 included; multiple reviewers specifically note they add K2 separately for proper calcium metabolism
- -Flip-top lid reported by at least one reviewer as prone to popping open during storage
- -No independent third-party testing (NSF, USP, or iTested) — quality relies on GMP self-certification alone
Best For
Watch Out
- !2,000 IU may be insufficient to correct a significant deficiency — get blood levels tested before relying on this dose therapeutically
- !Not vegan: capsule shell is bovine-derived gelatin
- !No K2 in the formula — if taking D3 long-term, consider pairing with MK-7 to direct calcium to bones rather than soft tissue
- !Not independently third-party tested, so label accuracy is unverified by an external lab
What is Vitamin D3, 2,000 IU, 120 Capsules?
Vitamin D3, 2,000 IU, 120 Capsules is a vitamin d product by NOW Foods, scoring 79.0/100 on AIScored.
- • Product overview Description Bone & Immunity Health Supports healthy teeth Promotes muscle health Non-GMO Food supplement Kosher - Contains Gelatine Family-run since 1968 Halal GMP quality assured Contains bovine-derived ingredients NOW® Vitamin D3 capsules supply this key vitamin in a highly absorbable liquid capsule form.
- • Vitamin D is normally obtained from the diet or produced by the skin from the ultraviolet energy of the sun.
- • However, it is not abundant in food.
- • As more people avoid sun exposure, vitamin D supplementation becomes even more necessary to ensure that your body receives an adequate supply.
- • Suggested use Take 1 softgel daily with a meal.
- • Other ingredients extra virgin olive oil, Soft gel capsule [bovine gelatine (BSE free), glycerine, water] and safflower oil.
- • Not manufactured with yeast, wheat, gluten, soya, maize, milk, egg, fish, shellfish, tree nut or sesame ingredients.
- • Produced in a GMP facility that processes other ingredients containing these allergens.
- • Made and quality tested in the USA with globally sourced ingredients.
- • Warnings Store in a cool, dry place after opening.
- • For adults only.
- • Consult your doctor if you are pregnant/breastfeeding, taking any form of medicine or have a medical condition.
- • Keep out of reach of children.
- • Natural colour variation may occur in this product.
- • Disclaimer While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site.
- • Although items may occasionally be despatched with alternative packaging, freshness is always guaranteed.
- • We recommend that you read labels, warnings and directions of all products before use and do not rely solely on the information provided by iHerb.
- • This website has been machine translated as a courtesy to customers.
- • iHerb does not represent or warrant that the translations are complete or error-free and iHerb is not responsible for any translation errors or omissions.
- • Supplement.
Is Vitamin D3, 2,000 IU, 120 Capsules 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
- Vegan
- No
Frequently Asked Questions
Is Vitamin D3, 2,000 IU, 120 Capsules worth buying in 2026? ▼
What is the best price for Vitamin D3, 2,000 IU, 120 Capsules in the UK? ▼
What are the pros and cons of Vitamin D3, 2,000 IU, 120 Capsules? ▼
Is Vitamin D3, 2,000 IU, 120 Capsules 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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