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Natural Factors

Vitamin D3 Drops, Unflavored, 25 mcg (1,000 IU), 0.5 fl oz (15 ml)

4.9 · 5255 reviews
1,528 ₽

Dietary Supplement 500 Drops Per Bottle In a Base of MCT Oil Suitable for Vegetarians Purity and Potency Guaranteed 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. Vitamin D3 is a potent liquid supplement that is carefully blended in a mixture of medium chain triglycerides (sourced from certified sustainable palm and coconut oil) and flaxseed oils providing 25 mcg (1000 IU) of vitamin D3 in just one little drop. Also available in 10 mcg (400 IU) potency for children. Isura™: Non-GMO: Documentation ✔ Mass Spec: Lab Tested ✔

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Dietary Supplement 500 Drops Per Bottle In a Base of MCT Oil Suitable for Vegetarians Purity and Potency Guaranteed 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. Vitamin D3 is a potent liquid supplement that is carefully blended in a mixture of medium chain triglycerides (sourced from certified sustainable palm and coconut oil) and flaxseed oils providing 25 mcg (1000 IU) of vitamin D3 in just one little drop. Also available in 10 mcg (400 IU) potency for children. Isura™: Non-GMO: Documentation ✔ Mass Spec: Lab Tested ✔

Customer reviews

5.0
verified purchase
Immunity support

This is my 2nd purchase. Very economical as 1 bottle last a long time; only 1 drop per day. No taste so easily drop into morning beverage. As I am housebound and rarely get out of house, gets very little exposure to the sun. Living in the tropics but dislike the humidity and heat so stayed indoors during the day and goes out in the evening. Needed the vitamin D3 for body/health wellness.

9/4/2026
5.0
verified purchase

I’m very impressed with this product. The quality of the ingredients seems excellent, and everything feels fresh and well-made. The packaging is secure and easy to use, and the size is just right for regular use. The dosage instructions are clear and simple to follow, which I really appreciate. It fits easily into my daily routine without any hassle. Overall, this is a reliable and well-prepared herbal product. I would definitely consider purchasing again and recommend it to others looking for a quality option.

4/14/2026
5.0
verified purchase
Great dosage of vitamin d3

Since the whole Covid craze I’ve been on top of my vitamin d intake, helps with immunity and if you don’t get a lot of sun it has huge benefits and great effects on your health. A lot of people are deficient so I highly recommend you take a form of vitamin d to help

11/24/2025
5.0
verified purchase
Прекрасно!

Thank you very much for this product, it suited me, I like the packaging, comfortable and stylish, I will order more of these products, and recommend them to all my friends and relatives! good!!

9/17/2025
5.0
verified purchase
For immune system

This product is required for immune system. I liked the effect of taking this supplement. Recommend this product to friends and family.

8/10/2025
5.0
verified purchase
It works

As someone who values health and well-being, I have tried several vitamin D supplements over the years, but vitamin D drops have proven to be one of the most effective and convenient options. Whether you're dealing with a deficiency, want to boost your immune system, or just ensure optimal bone and muscle health, these drops are a fantastic addition to your daily routine.

2/23/2025
5.0
verified purchase
Quality sun

Natural Factors is an ideal brand. An ideal brand in producing effective and quality ingredients. We love it very much with our family. An ideal product for filling deficiency and increasing bone strength. Increases immunity. The dosage is ideal. The packaging is perfect, the taste is perfect, the size is perfect.

1/13/2025
5.0
verified purchase

The quality is over the top, the quantity is enough for couple of months, 4th time restocking. One of my favorites in Iherb purchases! Would definitely recommend this brand 😍 and the price is very reasonable. Tastes amazing, adds flavor to everything. The quantity is massive it can last you for a year. The ingredients are same as the written on the bottle. Packaging is very friendly and easy to use. I use it for variety of recipes

1/10/2025
5.0
verified purchase
For immune system

I trust the quality of this brand of supplements, so I buy them all the time. The main function of this supplement is to improve heart and immune system health. I recommend it to my friends.

11/24/2024
5.0
verified purchase
For immune system

I liked the quality of the supplement and cost. The benefits of Vitamin D-3 are to improve immune system health. Recommend this supplement to my family and friends.

11/22/2024