Head to head · Vitamins & Minerals

NatureWise Turmeric Curcumin 2250 mg with BioPerine vs Sports Research Vitamin D3 + K2 (5000 IU)

Sports Research scores higher overall (7.8 vs 7.5 out of 10), mainly on efficacy, experience and transparency. NatureWise still leads on quality & purity and value.

Updated November 2026 from our full reviews · How we score

Front of the NatureWise Turmeric Curcumin 180-capsule bottle

NatureWise Turmeric Curcumin 2250 mg with BioPerine

7.5

Good

NSF-certified turmeric with about 500 mg of curcuminoids and BioPerine for roughly 36 cents a day, though most of its 2,250 mg is plain root powder.

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Higher score

Front of Sports Research D3 + K2 60 veggie softgel bottle

Sports Research Vitamin D3 + K2 (5000 IU)

7.8

Good

Amazon's top D3+K2 pick: vegan lichen D3 plus MK-7 K2 in coconut MCT oil; the 5,000 IU dose exceeds the adult upper limit for daily use.

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The short answer

Choose NatureWise if…

Adults who want an NSF-verified turmeric with black pepper extract
Budget shoppers comparing curcuminoids per dollar
Trying curcumin for everyday joint comfort with a clinician's okay
You care most about quality & purity, value

Choose Sports Research if…

Vegans who want lichen-derived D3
People with a documented deficiency under medical guidance
Anyone who wants D3 and K2 in one small softgel
You care most about efficacy, experience, transparency

Key differences

Biggest scoring gap: Efficacy: Sports Research 7.4, NatureWise 6.0. This factor covers key ingredients at clinically studied doses, and how strong the evidence is.
Independent testing: Only NatureWise carries NSF Contents Certified; Sports Research has no independent certification we could verify. NSF Contents Certified: NSF confirms the product contains what the label says and no harmful levels of contaminants.
Formula: Of the key ingredients in our reviews, only Sports Research lists vitamin D.
Format: NatureWise: capsule, 60 servings per container; Sports Research: softgel, 60 servings per container.
Dietary labels: Only NatureWise is labeled dairy-free.

Side by side

	Turmeric Curcumin 2250 mg with BioPerine	Vitamin D3 + K2 (5000 IU)
Our score	7.5 / 10	7.8 / 10
Efficacy (30%)	6.0	7.4
Quality & Purity (25%)	8.5	7.4
Value (20%)	8.5	7.8
Experience (15%)	7.8	8.8
Transparency (10%)	7.0	8.3
Form	Capsule	Softgel
Serving	3 Vegan Capsules60 servings per container	1 veggie softgel60 servings per container
Price per serving	$0.36	See retailer
Testing & certifications	NSF Contents CertifiedcGMP facility	Non-GMO Project VerifiedCertified VeganThird-party testedcGMP facility
Dietary	Vegan, Gluten-free, Dairy-free, Soy-free, Non-GMO	Vegan, Gluten-free, Soy-free, Non-GMO
Key ingredients	Organic turmeric extract (95% curcuminoids)500 mg Organic turmeric root powder (Curcuma longa)1750 mg BioPerine black pepper extract (95% piperine)15 mg Organic ginger root (Zingiber officinale)105 mg Organic Curcumin Complex (label total)2250 mg	Vitamin D3 (cholecalciferol from lichen, VegaDELight)125 mcg (5,000 IU) Vitamin K2 (as menaquinone-7, from chickpea)100 mcg Coconut MCT oil
Flavors	—	—
Creator video reviews	2	5

Pros and cons

Turmeric Curcumin 2250 mg with BioPerine

NSF Contents Certified, confirmed in NSF's database
About 475 mg of curcuminoids from a 95% extract per serving, plus root powder
Every amount disclosed, with no proprietary blend
The 2,250 mg headline is mostly plain root powder, not curcumin
Three capsules a day, ideally split across meals

All 9 pros and cons

Vitamin D3 + K2 (5000 IU)

Certified Vegan and Non-GMO Project Verified, with no soy, gelatin or carrageenan
D3 from lichen plus K2 as long-acting MK-7
Tiny, easy-to-swallow softgel in an MCT oil base
5,000 IU exceeds the 4,000 IU adult upper limit for daily use
No USP or NSF certification; testing claims are the brand's own

All 8 pros and cons

Our verdict: NatureWise vs Sports Research

Sports Research is the stronger product overall, 7.8 to 7.5 in our scoring, ahead on efficacy, experience and transparency. Each full review shows the evidence, testing and buyer feedback behind these scores.

Full Turmeric Curcumin 2250 mg with BioPerine review Full Vitamin D3 + K2 (5000 IU) review

What creators say

Questions people ask

Is NatureWise better than Sports Research?

In our scoring, Sports Research Vitamin D3 + K2 (5000 IU) rates higher overall (7.8 vs 7.5 out of 10). NatureWise leads on quality & purity and value; Sports Research leads on efficacy, experience and transparency. Scores weigh efficacy, quality, value, experience and transparency.

Are NatureWise and Sports Research third-party tested?

NatureWise carries NSF Contents Certified; Sports Research has no independent certification we could verify.

Who should choose NatureWise over Sports Research?

Our reviews suggest NatureWise is best for adults who want an NSF-verified turmeric with black pepper extract, budget shoppers comparing curcuminoids per dollar and trying curcumin for everyday joint comfort with a clinician's okay, while Sports Research is best for vegans who want lichen-derived D3, people with a documented deficiency under medical guidance and anyone who wants D3 and K2 in one small softgel.

What is the difference between NatureWise and Sports Research?

Only NatureWise carries NSF Contents Certified; Sports Research has no independent certification we could verify. NSF Contents Certified: NSF confirms the product contains what the label says and no harmful levels of contaminants. Of the key ingredients in our reviews, only Sports Research lists vitamin D. NatureWise: capsule, 60 servings per container; Sports Research: softgel, 60 servings per container.

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