SKU: 52719342135

Natural Factors SunVitamin D3 1000 IU - 180 Softgels

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Description

Natural Factors SunVitamin D3 1000 IU - 180 SoftgelsProvides the natural D3 form of vitamin D (cholecalciferol) Softgels deliver vitamin D3 in a base of organic flaxseed oil, which enhances absorption due to the fat soluble nature of vitamin D Available in tablets or softgels, each providing 1000 IU of vitamin D3 Available in various bottle sizes, including an economical 500 softgel size Natural Factors Vitamin D3 provides the natural form of vitamin D that is essential for the absorption of calcium

Provides the natural D3 form of vitamin D (cholecalciferol)

Softgels deliver vitamin D3 in a base of organic flaxseed oil, which enhances absorption due to the fat-soluble nature of vitamin D

Available in tablets or softgels, each providing 1000 IU of vitamin D3

Available in various bottle sizes, including an economical 500-softgel size 

Natural Factors Vitamin D3 provides the natural form of vitamin D that is essential for the absorption of calcium and phosphorus. These minerals are needed for successful bone mineralization and maintenance, as well as muscle function and proper nerve transmission.

Each tablet delivers a single 25 mcg (1000 IU) dose of vitamin D3 so that sufficient levels can be maintained conveniently when dietary intake and exposure to the sun’s ultraviolet rays is low. When combined with an adequate calcium intake, each daily tablet will help prevent the brittle, weak bones of osteoporosis and support a healthy immune system. Vitamin D3 is also an important factor in reducing the risk of cognitive dysfunction.

Vitamin D3 1000 IU is available in both 90 and 180 tablet bottles and is suitable for vegetarians. It contains no artificial colours, preservatives, sweeteners, or common allergens, making it a safe product that can be recommended for the health of both mother and child during pregnancy and lactation. This product contains no GMOs and is a key factor in the maintenance of good health. 

Vitamin D3 is an essential fat-soluble vitamin made naturally in the skin from exposure to the sun’s ultraviolet rays. The sunlight converts cholesterol within the skin into a form of vitamin D3 called calciol. This is converted by the liver into calcidiol (25-hydroxyvitamin D3), which is the inactive form of vitamin D3 circulated and stored in the body. The kidneys convert calcidiol into the active form of vitamin D3 called calcitriol (1,25-dihydroxy-vitamin D3).

Vitamin D3 increases calcium absorption in the gut to sustain steady blood calcium and phosphate concentrations that enable normal bone mineralization. As a hormone, it regulates cellular production of important proteins and peptides.

Vitamin D3 helps increase the number of receptors on immune system cells to help them fight pathogenic bacteria and viruses. It helps white blood cells recognize foreign invaders and may also influence the release of protective proteins when there is an infection.

Vitamin D3 may benefit cognition by protecting neurons and supporting their development. Its receptors are found on many different tissues in the body, including those in muscles, the prostate, and the heart, indicating that vitamin D3 has more effects than we currently know.

Ingredients

Medicinal ingredients

Each tablet contains:

Vitamin D3 (cholecalciferol)

25 mcg (1000 IU)

Non-medicinal ingredients

Microcrystalline cellulose, dibasic calcium phosphate dihydrate, vegetable grade magnesium stearate (lubricant).

Suggested Usage

Recommended Adult dose: 1 softgel daily or as directed by a health care practitioner.  Keep out of reach of children.

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SKU: 52719342135

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Emma Shirley
Chelsea, US
★★★★★ 5
Easy to use high quality
Color: White
Quick and easy to replace
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Reviewed in the United States on May 28, 2026
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road soda
Cuba, US
★★★★★ 5
The best electric toothbrush ever
Color: Rose Gold
Dentists on the tube agree, this is the best clean you can get and at such a low price compared to the others. These heads are durable, they last me like 4 months each, maybe more. Functions great with the vibration levels of the burst and unbeatable battery life.
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Reviewed in the United States on September 27, 2025
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lynn
Belleville, US
★★★★★ 5
Replacement
Color: Black
Great product!
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Reviewed in the United States on May 17, 2026
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Wendy K
Massapequa, US
★★★★★ 5
A Little Color Chaos, but My Teeth Don’t Mind
Color: Lavender
I grabbed these BURST replacement heads thinking they’d match my toothbrush perfectly — turns out, I’ve created a stylish little mix-and-match masterpiece. My brush now looks like it’s dressed for a rave, but honestly, I kind of love it. Despite the color confusion, these heads work great. They snap on easily, feel sturdy, and leave my teeth feeling squeaky clean like I just left the dentist (minus the awkward small talk). they may not match, but they definitely make my smile shine.
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Reviewed in the United States on March 23, 2026
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S. A.
Grantham, US
★★★★★ 4
UPDATE:Replacement brush DOES NOT FIT well! Customer service difficulties.
Color: Rose Gold
I bought a burst toothbrush about seven month ago from Amazon for $99. (Now they are about $70). I subscribed to the burst website so I could have my toothbrush unit under warranty. I’ve been receiving replacement heads from them directly which is slow and spotty. But they did arrive (I replace the heads every two to three months). This week I received my brush head and it did NOT fit the unit. I emailed the company directly and still have not heard what they are going to do. In the meantime I ordered the three pack replacement heads from Amazon since they are quick and reliable on prompt delivery. So again- opened it up and it BARELY FIT. I had to jamb the head onto the unit. I’m honestly not sure if it will come off again. I guess I’ll figure that out in three more months 🤨. The Burst seems like a decent toothbrush- although my hygenist wasn’t sure it’s as good as oralB or sonicare. I frankly got tired of sonicare breaking very quickly and the last one was $200! That’s why I switched. I hope they will resolve this manufacturing problem. I like the unit, it’s gentle on my sensitive gums and it holds a charge a really long time. And to be clear I ordered the BURST heads, not the knockoffs from China. I hope I can continue to be a customer. The prior replacement heads have always worked and went on easily. UPDATE: customer service reached out to me - which I truly appreciate!! After using the head for a few weeks it loosened up (in a good way). Not sure why it was too tight initially- but it’s all good now. I will continue to support Burst 💥 oral care. I added a star ⭐️ to my prior review to reflect the good customer service. They also replaced my first defective head that got me started on this “rant”.
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Reviewed in the United States on April 12, 2023

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