21st Century

Vitamin D3, 125 mcg (5,000 IU), 110 Tablets

4.8 · 3210 reviews
836 ₽ −25% 1,114 ₽

Strong Bones & Immune Support Vitamin Supplement Gluten Free Non-GMO Guaranteed Quality Laboratory Tested Trusted Quality For Over 30 Years Vitamin D3 is essential for absorption of calcium and supports bone, teeth and immune system.

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Strong Bones & Immune Support Vitamin Supplement Gluten Free Non-GMO Guaranteed Quality Laboratory Tested Trusted Quality For Over 30 Years Vitamin D3 is essential for absorption of calcium and supports bone, teeth and immune system.

Customer reviews

4.0
verified purchase

Good value vitamin D3 with a high dosage. Easy to take and works well for maintaining vitamin D levels. No side effects noticed. Taking one star off only because the tablets are a bit large, but overall a dependable product.

1/24/2026
5.0
verified purchase
Strong and Convenient Vitamin D3 Supplement

The 21st Century Vitamin D3 5,000 IU tablets are excellent in quality with a reliable ingredient composition. The package of 360 tablets offers great value and convenience for long-term daily supplementation. I’ve noticed real benefit in my overall wellness and immune support with consistent use. This supplement is ideal for adults needing to address vitamin D deficiency or maintain healthy levels, and the high potency makes it easy to meet daily requirements without multiple pills. Easy to take and effective, highly recommended for anyone looking for a trustworthy Vitamin D3 source.

12/26/2025
5.0
verified purchase
Good supplement

I wad diagnosed with a lack of D3 vitamin. I chose this form of the vitamin, though it is not the best form, but I thought that it is better to try. I felt some energy flow and was less imposed to illnesses.

12/3/2025
5.0
verified purchase

This Vitamin D3 has been essential for keeping my energy levels up, especially during the winter months. The tablets are small and very easy to swallow with no unpleasant aftertaste. I had a deficiency, and my latest blood test showed my levels are finally in the optimal range. It's an excellent value for a high-potency supplement that really works.

11/24/2025
5.0
verified purchase
Reliable dose and easy to take

The tablets are small and easy to swallow. The dosage is strong, which is useful for those who need higher vitamin D support. Effects may vary depending on individual levels.”

11/21/2025
5.0
verified purchase
최고!

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

11/13/2025
5.0
verified purchase
최고!

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

11/13/2025
5.0
verified purchase
Must Buy

Good for health improvement, taste is good as well. Can be mixed with your diet.

11/11/2025
2.0
verified purchase
Buy the one with K2

Yea it helped me on the level of my vitamin D but after reading and searching it’s better to have D3 or K2 also my holistic dietitian recommended to do so I love how small the pills are so u better keep it away from kids cuz they my think its little candy 😂

11/8/2025
4.0
verified purchase

suplement if good quality and fine ingredients. dosage is very big. feel energized while taking this supplement. very helpful in winter . supports the immunity system

9/27/2025