Natural Factors
Natural Factors SunVitamin D3 1000 IU 25 mcg (Tablets)
Pure cholecalciferol supports bone strength and immune function daily
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Why Choose This Product
BONE STRENGTH
Helps your body absorb calcium more effectively, contributing to stronger bones and skeletal support.
IMMUNE SUPPORT
Supports your immune system's natural defenses with bioavailable vitamin D3.
MOOD BALANCE
Helps maintain healthy mood balance, especially during darker months when sunlight is limited.
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How It Works
How It Works
Vitamin D3 (cholecalciferol) from lanolin converts in your body to the active hormone calcitriol, which regulates calcium absorption and supports immune cell function. The organic flaxseed oil enhances fat-soluble vitamin absorption.
Who It's For
Adults seeking bone support, immune system maintenance, or mood balance during low-sunlight periods. Ideal for those with limited sun exposure or following a plant-based diet with minimal vitamin D sources.
Who It's Not For
Not suitable if you're already taking high-dose vitamin D supplements or have been advised to limit vitamin D intake by your healthcare provider.
About This Product
What It Does
Natural Factors SunVitamin D3 delivers 1000 IU of bioavailable vitamin D3 to support bone strength and immune function. This pure cholecalciferol formula helps your body maintain optimal calcium absorption and immune system performance year-round.
Why It Works
- BIOAVAILABLE FORM: Cholecalciferol from lanolin converts efficiently to active vitamin D in your body, unlike synthetic alternatives.
- ENHANCED ABSORPTION: Organic flaxseed oil improves fat-soluble vitamin uptake compared to dry tablets.
- OPTIMAL POTENCY: 1000 IU provides substantial support without excessive dosing — the amount most adults need daily.
What's Inside
Each tablet contains pure vitamin D3 as cholecalciferol from lanolin, combined with organic flaxseed oil in a simple formula. No unnecessary fillers or artificial additives.
Why we carry it: Natural Factors consistently delivers pharmaceutical-grade nutrients with third-party testing and proven bioavailability.
How to Take
Full Ingredients
| Supplement Facts | ||||
| Serving Size 1 Tablet | ||||
| Servings: 180 | ||||
| Servings: | Amount/Serving | %DV | ||
| Vitamin D3 ( as cholecalciferol )(lanolin) | 1000 IU | 250 % | ||
| ** Daily Value not established. | ||||
| Other Ingredients:softgel capsule(gelatin,glycerin,purified water)Soybean oil. | ||||
Customer Reviews
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Questions & Answers
Research & Science
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