Natural Factors UK: Canadian/US Brand, Organic Options
Last updated: 2026-08-31 · by Sun Supplements
Natural Factors is a Canadian company (with US distribution) focused on quality, sustainability, and certified organic options. Their Whole Earth & Sea line is fully non-GMO and uses organic whole-food sources. They're particularly strong in curcumin (Theracurmin — a highly bioavailable curcumin formula), probiotics (with evidence-based strains), and plant-based omega-3. A good choice for buyers who prioritise organic certification and Canadian/US manufacturing.
Founded
1965
Reputation
Organic-certified
Products
78 across 10 categories
UK delivery
2-5 working days · free over £30
About Natural Factors
Natural Factors has been in the supplement industry since 1965 and is widely regarded as a organic-certified brand. Their formulations emphasise:
- Theracurmin — the most bioavailable curcumin on the market (27x more than standard curcumin)
- Whole Earth & Sea line — certified organic, non-GMO, plant-based options
- Strong plant-based omega-3 (algae-derived EPA + DHA)
- Canadian manufacturing — IFOS-certified fish oils, strict quality control
At Sun Supplements, we currently stock 78 Natural Factors products across 10 categories — all available with free UK delivery over £30 and 2-5 working day tracked shipping.
What Makes Natural Factors Stand Out
From our perspective as a UK retailer who curates US supplement brands, here are the reasons Natural Factors stands out:
- Theracurmin — the most bioavailable curcumin on the market (27x more than standard curcumin)
- Whole Earth & Sea line — certified organic, non-GMO, plant-based options
- Strong plant-based omega-3 (algae-derived EPA + DHA)
- Canadian manufacturing — IFOS-certified fish oils, strict quality control
Best-Sellers
These are the most popular Natural Factors products with our UK customers right now:
Browse by Category
Click any category to see all Natural Factors products we stock:
- Whole Earth & Sea (organic) (16 products)
- Probiotics (12 products)
- Curcumin (8 products)
- Omega-3 (8 products)
- Multivitamins (8 products)
- Vitamin D (6 products)
- Magnesium (6 products)
- B-complex (6 products)
- CoQ10 (4 products)
- Iron (4 products)
Shop all Natural Factors
Browse the full Natural Factors range with free UK delivery over £30.
View all Natural Factors →Frequently Asked Questions
Is Natural Factors available in the UK?
Yes — Natural Factors is available in the UK through specialist US supplement importers like Sun Supplements. We stock 78+ Natural Factors products and ship to the UK with free delivery over £30.
Is Natural Factors shipped from the UK?
Sun Supplements is UK-based. Orders are dispatched from our UK warehouse and delivered in 2-5 working days via tracked shipping.
Are Natural Factors products authentic?
Yes — every product is sourced directly from Natural Factors (or their authorised US distributor) and shipped in original sealed packaging with full batch and expiry information.
What's the best Natural Factors product to start with?
The most popular Natural Factors products at Sun: Theracurmin Curcumin 60 mg; Whole Earth & Sea Organic Vegan Omega-3; Women's Multi. Pick based on your goal.
How does Natural Factors compare to other US supplement brands?
Natural Factors (founded 1965) is positioned as organic-certified. Compared to other US brands at Sun: Theracurmin — the most bioavailable curcumin on the market (27x more than standard curcumin) Whole Earth & Sea line — certified organic, non-GMO, plant-based options
Related guides
- US Supplements in the UK — the complete buyer's guide
- Magnesium UK guide
- Vitamin D UK guide
- Omega-3 UK guide
- Probiotics UK guide
- Multivitamin UK guide
- Shop all brands
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