What’s inside this formula?
Natural Factors’s SunVitamin D3 — 2,500 IU is listed here in the vitamin d collection. This article looks at the selected 500 softgels pack, then puts its ingredients into context.
One softgel contains vitamin D3 (cholecalciferol) 62.5 mcg, equivalent to 2,500 IU, in organic flaxseed oil.
Check the original label ↗Vitamin D helps the body absorb calcium and is needed for normal muscle and nerve function. Supplementation can correct inadequate intake or deficiency in an appropriate care plan. The reason for using it matters more than choosing the largest number on the front of a bottle.
The pack details above come from the manufacturer. Ingredient research below does not establish the effects of this exact product or independently verify its contents.
Concentration per softgel
Each softgel supplies 2,500 IU, or 62.5 mcg, vitamin D3. The selected 500-count pack does not change that concentration.
Avoid duplicate vitamin D
The manufacturer says this higher-strength product is not automatically necessary for everyone and directs users to account for other vitamin D products and calcium intake.
Follow the Canadian cautions
The page describes one daily softgel for adults, excludes high blood or urine calcium, and requires review for longer use. Flaxseed oil is the carrier; gelatin prevents a vegetarian classification.
Where might it be useful?
Calcium absorption
Adequate vitamin D helps the body use calcium to maintain bones.
Normal muscle function
Vitamin D is needed for muscle movement; correcting deficiency is different from boosting performance in someone already sufficient.
What the research can — and cannot — tell us
Vitamin D has a well-established role in preventing deficiency disorders. Wider claims about weight loss, mood or routine disease prevention are not established for every user. D3 and D2 products, combination formulas and high-strength products should be compared using the actual vitamin amount.
What deserves your attention?
Adult formula; not for hypercalcemia or hypercalciuria. Review kidney conditions, other vitamin D and medicines; manufacturer advises professional review before use and beyond six months.
Suitability comes before strength
Excessive supplemental vitamin D can cause serious harm, including high calcium and kidney problems. Review high-strength use and total combined intake with a qualified clinician.
Dietary details for this product
Animal-derived The complete formula includes gelatin in the softgel, with glycerin, purified water and flaxseed oil.
A dietary label and an allergy assessment answer different questions. Check every ingredient, the capsule or softgel materials and the allergen statement on the pack you receive. If you take medicines, have a health condition, are pregnant or are choosing for a child, discuss the full formula with a qualified clinician.
Make the comparison meaningful.
- Match the exact version.Look for Natural Factors · SunVitamin D3 — 2,500 IU and the 500 softgels pack. A similar name or bottle can contain a different strength, blend or serving.
- Compare like with like.Read the serving size alongside the active ingredient amount. Capsule count, compound weight and total blend weight can describe different things. Use the label notes above to see what matters for this formula.
- Check the seller and final cost.Review seller identity, expiry, batch details and any Indian import information. Compare the final delivered price only after matching the formula. Prices and stock are checked on the retailer’s site.
Keep the label beside the decision.
Open the complete product profile for its source, dietary notes and available shopping destination.
Is this an endorsement or a medical recommendation?
No. This is an editorial guide to a selected product and its ingredient context. We have not independently tested this bottle or established a clinical benefit for this exact formula. A product’s inclusion is not a recommendation that everyone should take it.
Does Proof & Price earn from shopping links?
Some product-profile links are paid links and are labelled. As an Amazon Associate we earn from qualifying purchases. Manufacturer source links are provided for checking the label. Read our affiliate disclosure.
Read, check, decide.
Product label reviewed 2026-10-29. Ingredient context reviewed 2026-10-26. This article has not received independent clinical review. Packaging and formulas can change; the current pack takes precedence.
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