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D3, 60 Tablets
D3, 60 Tablets

Customer Ratings & Reviews

100% authenticOur products are sourced directly from brands or authorised distributors.Show more
4.5
Based on 25,770 ratings
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What customers say
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English (UK)
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zhzinc
Gold
Posted on Nov 5, 2025
United States
385
0
0
19
Simple and Reliable Vitamin D3 Supplement
Verified Purchase
The 21st Century D3 25 mcg (1,000 IU) tablets are a convenient and affordable option for those who prefer an easy-to-take daily supplement. The tablets are small, smooth, and easy to swallow, making them simple to include in any routine. I like the straightforward formula and the trusted packaging, which clearly lists all the details without unnecessary extras. The 60-count bottle is just the right size for regular use and great value. Overall, this is a well-made, dependable Vitamin D3 supplement that offers good quality and convenience at an excellent price point.
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eli
Posted on Feb 3, 2026
Colombia
16
12
0
0
Verified Purchase
I love these products because they are very good quality. They help with bone health, nutrient absorption and deficiency, and immunity. There's no rebound effect, the size and dosage are right, and the ingredients are very good. They don't have a strong flavor, and the packaging is fine.
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iHerbCustomer
Posted on May 1, 2026
Jordan
18
0
0
0
Excellent quality and an unbeatable price
Verified Purchase
"21st Century Vitamin D3 is well-known. The tablets are very small and easy to swallow, and the concentration (1000 IU) is ideal for daily use to maintain normal levels in the body. The price is excellent considering the number of tablets and the quality. I noticed an improvement in my overall energy levels after taking it regularly." A great product; the quantity is sufficient, and the price is very competitive. The quality is excellent, and the ingredients are clear and clean. The package arrived sealed.
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Olgaaherb
Silver
Posted on Jun 3, 2026
Ukraine
148
0
12
2,509
Dosage
Verified Purchase
A good vitamin D3 at an affordable price. The tablets are small and easy to use. The packaging is compact and the quality is good. An excellent option from a well-known brand with a good price-quality ratio.
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iHerbCustomer
Gold
Posted on Apr 20, 2026
Kazakhstan
457
3
0
32
21st Century Vitamin D3 25 mcg (1000 IU) 60 Tablets
Verified Purchase
A good, basic vitamin D3 option for everyday use. The tablets are of decent quality, the size is convenient, and they're easy to swallow. The ingredients are simple and straightforward, without unnecessary components, which is important to me. The ingredients are reassuring, and the dosage is suitable for everyday use. The benefit is that it's a convenient supplement that's easy to incorporate into your routine. It's an excellent choice for men who need a product that works without breaking the bank. The packaging is compact, and the dose lasts for a typical course. Overall, I'm impressed; for the price, it's a very good and practical option.
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VladimirUAWIN
Silver
Posted on Apr 12, 2026
Ukraine
227
0
0
59
high-quality vitamin D3
Verified Purchase
Vitamin D3 is the sunshine vitamin. Why the sunshine vitamin? It's simple – our body produces vitamin D3 under the influence of ultraviolet radiation when the sun's rays hit our skin. It would seem clear: the sun shines, the vitamin is produced, and as a result, there's no reason for a deficiency. But it's not as simple as we'd like. Why is vitamin D3 so important for our health, why most people suffer from a deficiency, and what to do about it? We'll explore all this below in our article. Causes of the sunshine vitamin deficiency: Vitamin D3 deficiency is a widespread and global problem today. In Ukraine, over 80% of people are deficient in this element. Even though D3 is the sunshine vitamin, it's still a common problem in the summer. Sunscreen, unhealthy diets, and short periods of outdoor activity all block our body's ability to synthesize the vitamin. So what can we say about the fall and winter? When the weather is cloudier and colder. Causes of vitamin D3 deficiency: Use of sunscreens with UV protection; Excess body weight; Gastrointestinal tract problems; Thyroid problems; Taking medications that interfere with the full absorption of vitamin D3 (glucocorticoids, antifungals, antiepileptics); Impaired kidney and liver function; Old age (50+); Dark skin. Symptoms of vitamin D deficiency: People at risk should pay special attention to the level of this element: pregnant and lactating women, obese people, people with chronic diseases of the gastrointestinal tract, bone diseases (arthrosis, osteoporosis).
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iHerb Customer
Posted on Nov 12, 2025
Saudi Arabia
36
24
0
22
good
Verified Purchase
This vitamin is more important than drinking water 🤪 because when my level dropped to 9, I suffered from many psychological and physical problems, and I didn't return to normal until it went up. Initially, I took a weekly dose of 50,000 units, and after finishing that, I started taking this daily dose. It's reasonably priced and lasts a long time.
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hanan-abu-saif
Posted on Nov 3, 2025
Israel
79
62
0
2
Verified Purchase
Easy to use, pleasant scent, high quality, suitable size, beautiful packaging, high moisturizing effect, wonderful formula, excellent benefits for lips, whether dry or with SPF. [The following appears to be a repetition of the previous sentence and is omitted: "Scent, use, quality, size, age, packaging, benefits, formula, scent, use, quality, size, age, packaging, benefits, formula, scent, use, quality, size, age, packaging, benefits, formula"]
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iHerb Customer
Posted on Nov 2, 2025
Japan
13
10
0
1
Verified Purchase
For teeth, bones, and immune system support! Received in a sealed package. It's from 21st Century so rest assured the quality is great. Ingredients is listed on the package. Dosage is one tablet a day so one bottle can last for 60 days. Can fit into a carry on size bag!
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Raneem
Silver
Posted on Aug 18, 2025
Israel
203
138
0
10
Distinguished
Verified Purchase
The smell is excellent, the use is wonderful, the quality is high, the size is large, its formula is excellent, its benefit is high, the lifespan is long, the package is tightly sealed, the aromatic oils are original, it is sensitive to the sun, it is very moisturizing, and it is highly nourishing. The ingredients, quantity, stress, mood, and taste are Ayurvedic.
Auto-translated from Arabic
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