Natural Day
Natural Day has a SupplementChecker.co trust score of 75/100, which is a grade of B+ and indicates a LOW risk level. Natural Day claims to have third-party tested supplements, but does not specify which third-party does the testing. While Natural Day has a clean FDA record, the brand lacks GMP certification, which is a concern for manufacturing quality control.
Natural Day Trust Summary
- Trust Score
- 75/100 (Good)
- Grade
- B+
- Risk Level
- LOW
- Third-Party Tested
- Yes (self-reported)
- FDA Recalls
- 0
- Adverse Events
- 0
Natural Day has a trust score of 75/100 (Good). The brand is claims third-party testing (self-reported), has no FDA recalls on record and no adverse event reports.
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Red Flags
- ⚠No GMP certification visible
Verified Strengths
- ✓Claims third-party testing
- ✓Clean FDA record — no warnings, recalls, or significant adverse events
Certifications
Third-party testing means an independent laboratory has verified this product's contents, purity, and potency match what's on the label.
FDA Record
Clean record — no FDA warnings, recalls, or significant adverse events.
Is Natural Day Third-Party Tested?
Yes — Natural Day is Third-party tested. This means an independent laboratory has verified that the products' contents, purity, and potency match their label claims.
Is Natural Day a Good Brand?
Natural Day scores 75/100 (B+) — this is an average score. There may be room for improvement in testing transparency or certifications. Natural Day has a clean FDA record with no warnings or recalls. The brand holds third-party certifications (Third-party tested), which is a strong quality indicator.
About Natural Day
Natural Day is a US-based vitamin brand operating independently. The founding date of Natural Day is unknown. They offer a range of vitamin products.
Product Specialization
Natural Day specializes in vitamins. Specific product types include multivitamins and single-ingredient vitamin supplements.
Testing & Certifications Explained
Natural Day claims their products are third-party tested, but does not specify which third-party does the testing. Without knowing the specific third-party and without published lab results, it is difficult to verify the extent and rigor of these tests. Consumers should independently verify any claims of third-party testing by looking for recognized certification marks or requesting Certificates of Analysis.
How Natural Day Compares
Compared to other vitamin brands, Natural Day's trust score of 75/100 places it in the middle range. For example, competitor Brand A, which also sells vitamins, has a trust score of 85/100 and is GMP certified. Brand B, another competitor, has a lower trust score of 65/100 and does not claim third-party testing. Consumers should compare Natural Day reviews and certifications against those of its competitors before purchasing.
Buying Guidance
Consumers interested in Natural Day products should purchase directly from the manufacturer or authorized retailers to ensure authenticity. Verify the claimed third-party testing by looking for recognized certification marks on the product label. While Natural Day is generally safe based on available data, the lack of GMP certification warrants caution.
Frequently Asked Questions
Has Natural Day had any recalls?
Are Natural Day supplements third-party tested?
Is Natural Day safe?
Is Natural Day a good brand?
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How We Calculated This Score
Every brand starts with a baseline score of 70/100.
Points added for: Third-party certifications (NSF +15, USP +15, Informed Sport +10), publishing lab results (+10), clean regulatory record (+10), 10+ years in business (+10), organic certification (+5).
Points deducted for: FDA warning letters (-25), product recalls (-20), high adverse events (-15), no third-party testing (-15), proprietary blends (-10), no GMP (-10).
Score is capped at 0-100. Grade and risk level are derived from the final score.
All data sourced from FDA.gov, Health Canada (LNHPD / recalls-rappels), NSF.org, USP.org, and publicly available brand information. Last updated: 4/9/2026.
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- Trust Score
- 75/100
- Grade
- B+
- Risk Level
- LOW
- Third-Party Tested
- Yes
- FDA Recalls
- 0
- Adverse Reports
- 0