Product comparison
Sports Research Vitamin D3 vs Transparent Labs Vitamin D3 Capsules
Sports Research·Transparent Labs
30 servings
Total
Choose if…
- ✓You care about salt/form heuristics encoded in our rubric.
- ✓You want the higher combined total with the same weights as single-SKU pages.
Sports Research Vitamin D3 leads overall
Thin race: only 4 points between totals
5000 IU · 60 servings · Vegan
Total
Choose if…
- Either option is acceptable - use the table above for the lane you care about.
Purchasing
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Choose Sports Research Vitamin D3 if…
- you want the higher overall decision score in this head-to-head.
Choose Transparent Labs Vitamin D3 Capsules if…
- you want more servings per container at a similar use pattern.
Price and availability may change. Check the latest price on Amazon.
Solid pick
Transparent Labs Vitamin D3 CapsulesPrice on file is stale or unverified—confirm on the retailer.
Price and availability may change. Check the latest price on Amazon.
Not sure this is the best choice?
Split decision - tradeoffs
Close call- Sports Research Vitamin D3 leads on formula (Δ ≈ 18 pts).
- Sports Research Vitamin D3 leads on ingredient fit (Δ ≈ 8 pts).
Decision table
- ValueTie band
- FormulaSports Research Vitamin D3 +18
- Label clarityTie band
- AdditivesTie band
- TransparencyTie band
| Metric | Sports Research Vitamin D3 | Transparent Labs Vitamin D3 Capsules |
|---|---|---|
| Total score | 74 | 70 |
| Ingredient fit | 94 | 86 |
| Dosage plausibility | 67 | 67 |
| Formula quality | 78 | 60 |
| Additives & label (combined lane) | 72 | 72 |
| Excipient / additive burden | 72 | 72 |
| Label clarity | 72 | 72 |
| Transparency | 54 | 54 |
| Value | 60 | 60 |
| Safety | 88 | 86 |
| Form | other | other |
| Serving size | 1 serving | 1 serving |
| Servings / container | 30 | 60 |
| Certifications | - | - |
| Latest price on file | - | - |
Head-to-head verdict
Razor-thin margin - Sports Research Vitamin D3 edges it; both are defensible.
Following the winner captures about +4 points on our total in this matchup.
Data confidence (catalog)
Category-adjusted decision
Rubric lift if you switch
- +18 on formula
- +8 on ingredient fit
Where Sports Research Vitamin D3 leads
- Sports Research Vitamin D3 leads on formula (Δ ≈ 18 pts).
- Sports Research Vitamin D3 leads on ingredient fit (Δ ≈ 8 pts).
Where Transparent Labs Vitamin D3 Capsules leads
- No decisive lane wins versus the other SKU in our tie bands.
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Best in this category
See how every tracked Vitamin D SKU ranks - overall, value, transparency, and certifications.
Open best Vitamin D rankingsIngredient intelligence
How this compare works
We diff the same product lanes used on SKU pages - including additive burden and label clarity - with tie bands so tiny gaps are not oversold. Open each product review for certifications, price history, and full notes.
Informational only - not medical advice, diagnosis, or treatment.