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Source Naturals

Vitamin D-3, 25 mcg (1,000 IU), 200 Tablets

4.7 · 1574 reviews
1,046 ₽

Dietary Supplement Bioactive Form For Bone And Immune Health Sunlight is the source of life on Earth, but we may not be aware of all the ways it benefits us. Our bodies manufacture vitamin D-3 when the skin is exposed to UV radiation from sunlight, but the ability to do so decreases as we age. Vitamin D-3 maintains healthy calcium and phosphorus levels in the body for strong bones; it helps maintain muscle strength in older adults; and it also plays an active role in a healthy immune response. Vitamin D-3 (cholecalciferol) is the optimal form of vitamin D. It is the form of vitamin D that the body manufactures in sunlight, and the form most efficient for the body's needs.

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Dietary Supplement Bioactive Form For Bone And Immune Health Sunlight is the source of life on Earth, but we may not be aware of all the ways it benefits us. Our bodies manufacture vitamin D-3 when the skin is exposed to UV radiation from sunlight, but the ability to do so decreases as we age. Vitamin D-3 maintains healthy calcium and phosphorus levels in the body for strong bones; it helps maintain muscle strength in older adults; and it also plays an active role in a healthy immune response. Vitamin D-3 (cholecalciferol) is the optimal form of vitamin D. It is the form of vitamin D that the body manufactures in sunlight, and the form most efficient for the body's needs.

Customer reviews

5.0
verified purchase

Quality is super! The ingredients are great! Size arranged! What you need! Performance is felt! the product arranged, perfectly packed, the effect is definitely there! I will order more! Just as quickly delivered

10/11/2025
5.0
verified purchase
Source Naturals, Vitamin D-3, 25 mcg (1,000 IU)

This is a vitamin D3 supplement with great quality ingredients. Packaging and taste are ok. I have a sensitive stomach so I avoid the oil based D3 supplements. For better absorption, I take it with olive oil.

10/11/2025
5.0
verified purchase

Very good .. I bought it for my dad .. the dosage he took was one pill every other day .. it supports immunity .. the packaging quality was good .. I believe it is essentially since we don’t get exposed to the sun like before with effect out bodies causing D deficiency

10/5/2025
5.0
verified purchase
Cheap and great

Vitamin D is pretty hard to get wrong, so I just tend to go based on price. This one was good, no complaints. I generally prefer to take 5000 IU.

10/3/2025
5.0
verified purchase
很好!

Quality is super! The ingredients are great! Size arranged! What you need! Performance is felt! the product arranged, perfectly packed, the effect is definitely there! I will order more! Just as quickly delivered

9/30/2025
5.0
verified purchase
很好!

Quality is super! The ingredients are great! Size arranged! What you need! Performance is felt! the product arranged, perfectly packed, the effect is definitely there! I will order more! Just as quickly delivered

9/30/2025
5.0
verified purchase
Vitamin D

Everyone does well with sufficient VITAMIN D , My doctor recommended this and it has been working for me

8/28/2025
5.0
verified purchase
Excellent Vitamin D3 Supplement for Overall Health

I'm very impressed with Source Naturals' Vitamin D3 supplement! As someone who's often indoors, I know how important it is to maintain adequate vitamin D levels, and this product has been a great addition to my daily routine. The 1,000 IU dosage is perfect for supporting bone health, immune function, and overall well-being. I've noticed an improvement in my mood and energy levels since starting this supplement, which I attribute to the high-quality vitamin D3. Source Naturals is a reputable brand that prioritizes purity and potency, and I appreciate their commitment to quality. The tablets are easy to swallow, and the packaging is convenient. I've had no issues with this product, and I'm confident that it's helping to support my health. I would highly recommend Source Naturals' Vitamin D3 supplement to anyone looking for a reliable and effective way to maintain adequate vitamin D levels. Overall, I'm extremely satisfied with this product, and I'm glad I chose Source Naturals for my vitamin D3 needs!

8/25/2025
5.0
verified purchase
Vitamin D-3, 25 mcg (1,000 IU)

The Vitamin D-3 25 mcg (1,000 IU) supplement is a reliable choice for individuals seeking to maintain adequate Vitamin D levels, supporting bone, immune, and muscle health. With consistent use and proper dosage, it can be an effective part of a daily health regimen. For tablet formulations, taste is generally not a concern, as they are swallowed whole.

5/24/2025
5.0
verified purchase
Source Naturals Vitamin D-3

I have used this brand of Vitamin D-3 for many years. It seems to help strengthen my immune system. I have avoided getting colds & other viruses by taking this supplement every day.

3/27/2025