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Natural Factors

Vitamin D3, 25 mcg (1,000 IU), 90 Tablets

4.8 · 9431 reviews
531 ₽

Dietary Supplement Supports Healthy Bones Purity & Potency Guaranteed Suitable for Vegetarians Vitamin D3 is essential for strong bones and teeth as it increases the body's absorption of calcium from food. Its role in regulating calcium levels also helps regulate the immune system and maintain healthy nerves and muscles. Isura: Non-GMO: Documentation ✔ Mass Spec: Lab Tested ✔

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Dietary Supplement Supports Healthy Bones Purity & Potency Guaranteed Suitable for Vegetarians Vitamin D3 is essential for strong bones and teeth as it increases the body's absorption of calcium from food. Its role in regulating calcium levels also helps regulate the immune system and maintain healthy nerves and muscles. Isura: Non-GMO: Documentation ✔ Mass Spec: Lab Tested ✔

Customer reviews

5.0
verified purchase
My Daily Dose of Sunshine – Energy & Mood on Point!

I purchased these Vitamin D3 tablets because I noticed a dip in my overall energy and mood, particularly during the darker months, and a friend recommended checking my Vitamin D levels. I was looking for a straightforward, easy-to-take supplement. My routine is simple and consistent: I take one small tablet daily with my breakfast. The tablets are genuinely tiny, effortlessly easy to swallow, and have no taste or aftertaste whatsoever, which is perfect. After about three weeks of continuous use, I started to feel a wonderful, subtle yet undeniable shift. That persistent afternoon sluggishness, which used to drag me down, gradually lifted, replaced by a more sustained, calm energy throughout my entire day. Beyond just physical energy, I’ve also felt a noticeable improvement in my overall mood and resilience. It's not a dramatic high, but a gentle sense of increased well-being and less susceptibility to feeling blue. This simple daily addition has genuinely become a foundational pillar in my wellness routine, making a tangible difference. If you're seeking to naturally boost your energy, support your immune system, and elevate your mood, these Vitamin D3 tablets are an excellent and very approachable choice!

6/21/2025
4.0
verified purchase

Great Vitamin D3 supplement! The 1,000 IU tablets are easy to take and perfect for daily use. I’ve noticed better energy and overall wellness with consistent use. Simple, high-quality, and reliable—highly recommend

4/10/2026
5.0
verified purchase
Good

Good quality ingredients. A good source of vitamin D3. very tiny size gel tablet . Easy to swallow .

3/8/2026
5.0
verified purchase
health talk

natural factors is always always a great, reliable company with quality items and convenient sizes of the packages as well. it's very economical too! taste? I mean they're pills so nothing to say there but it's worth the investment for your health.

3/8/2026
5.0
verified purchase
great

the quality is great and the ingredients are amazing, as well as the size which is perfect and the dosage is great as well, the benefits and taste are also noticeable and great. i really like it and i would recommene it to everyone. its a great product that i cant live without.

12/1/2025
5.0
verified purchase
Necessary when not out in the sun

I take vitamin D every day and prefer this brand and 1,000 IU dosage in the summer. I take more in the winter to stave off colds as Vit D basically acts like a hormone. The tabs are easy to swallow and have no taste. Essential for anyone spending too much time indoors. Really like the quality.

11/21/2025
5.0
verified purchase
Don’t skip this

Excellent quality vitamin D. Good ingredients, small size tablet. Perfect dosage. No bad side effects. Helps boost mood, sleep and immunity. You can’t go wrong. Especially if you don’t get much natural sunshine. I take my D every day and wouldn’t want to miss it. Easy absorption.

11/11/2025
5.0
verified purchase
Vitamin D3, 25 mcg (1,000 IU)

The quality is excellent—each softgel delivers a bioavailable form of vitamin D3 that supports bone health, immune function, muscle function, and overall wellbeing. I’ve noticed better energy levels, improved mood, and overall resilience, particularly during months with limited sun exposure. The ingredients are clean, non-GMO, and free from artificial colors, preservatives, or fillers, making it safe for long-term use.

10/30/2025
5.0
verified purchase
Vit D3

Vit D Dietary Supplement very good as price for maintaining dose even one knows that it Supports Healthy Bones Vitamin D3 is essential for strong bones and teeth as it increases the body's absorption of calcium from food. Its role in regulating calcium levels also helps regulate the immune system and maintain healthy nerves and muscles. I loved it is Non-GMO and Lab Tested will buy it again

10/28/2025
5.0
verified purchase
5/5

Best vit D great qualitywise increases estrogen which is good for bones so we can decrease that estrogen to further increase testosterone. This is only thing we can do to increase testosterone naturally. high estrogen but that estrogen spike should comes from HPT axis not external sources like black cohosh which decrease testosterone. hence vit D increase testosterone and estrogen and used for hormonal deficiency. and this is the best vit D i must say. give it a try

9/20/2025