Head to head · Vitamins & Minerals
Sports Research Vitamin D3 + K2 (5000 IU) vs Toplux Magnesium Complex
Sports Research scores higher overall (7.8 vs 6.8 out of 10) and leads on four of the five factors we score.
Updated October 2026 from our full reviews · How we score
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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TikTok Shop's best-selling magnesium puts 500 mg in one NSF contents-certified capsule, but oxide leads an undisclosed 8-form blend and the dose tops NIH's limit.
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We may earn a commission when you buy through these links — it never affects our scores. How we make money
The short answer
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, value, experience, transparency
Choose Toplux if…
- People who want one capsule a day with independent contents certification
- Adults whose diets run low in magnesium
- Those who tolerate magnesium well or don't mind a mild laxative effect
Side by side
| Vitamin D3 + K2 (5000 IU) | Magnesium Complex | |
|---|---|---|
| Our score | 7.8 / 10 | 6.8 / 10 |
| Efficacy (30%) | 7.4 | 6.5 |
| Quality & Purity (25%) | 7.4 | 7.5 |
| Value (20%) | 7.8 | 6.8 |
| Experience (15%) | 8.8 | 7.3 |
| Transparency (10%) | 8.3 | 5.5 |
| Form | Softgel | Capsule |
| Serving | 1 veggie softgel60 servings per container | 1 Veggie Capsule90 servings per container |
| Price per serving | See retailer | $0.33 |
| Testing & certifications | Non-GMO Project VerifiedCertified VeganThird-party testedcGMP facility | NSF Contents CertifiedcGMP facility |
| Dietary | Vegan, Gluten-free, Soy-free, Non-GMO | Vegan, Vegetarian, Non-GMO |
| Key ingredients |
|
|
| Flavors | — | — |
| Creator video reviews | 5 | 5 |
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
- Official TikTok Shop listing rated 4.8 stars
- 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
- Evidence for K2's bone and arterial benefits is still limited
- About $0.40 per day, more than plain D3
Magnesium Complex
- Listed under NSF/ANSI 173 contents certification, so label accuracy and contaminants are independently checked
- One capsule a day, and a 90-count bottle lasts three months
- About 33 cents per capsule at the brand's current price
- Short excipient list: a vegetable capsule, a standard filler and flow agents, with no colors or sweeteners
- Buyers frequently report calmer evenings and fewer muscle cramps within two weeks
- Amounts of the eight forms are not disclosed, and poorly absorbed magnesium oxide is listed first
- 500 mg per capsule exceeds NIH's 350 mg upper limit for supplemental magnesium, raising the odds of loose stools
- Large capsules that some buyers find hard to swallow
- Counterfeit listings and look-alike sites using the Toplux name describe different formulas
Our verdicts
Vitamin D3 + K2 (5000 IU)
This is a well-made, vegan D3 and K2 combination that people clearly enjoy taking, which explains its bestseller status. The 5,000 IU dose is higher than most adults need day after day and exceeds the upper limit, so it fits best under a clinician's guidance or on a less-than-daily schedule; everyone else should consider the 2,500 IU version.
Full review
Magnesium Complex
Toplux earns its NSF contents certification, and one capsule a day is easy, which helps explain its loyal following. The eight-form story is mostly marketing, though: amounts are undisclosed, oxide leads the list, and 500 mg exceeds the supplemental upper limit. If you want a gentle, well-absorbed magnesium for sleep or stress, a glycinate or citrate product with a disclosed dose is the better buy; if you tolerate magnesium well and value the certification, Toplux is a reasonable but overhyped choice.
Full review
What creators say
Questions people ask
Is Sports Research better than Toplux?
Are Sports Research and Toplux third-party tested?
Who should choose Sports Research over Toplux?
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