Grade: B+

LOW RISK

Sigma Life Sciences

Item: Sigma Life Sciences
Rating: 75
Author: SupplementChecker

Sigma Life Sciences has a SupplementChecker.co trust score of 75/100, earning a grade of B+ and a LOW risk designation. Sigma Life Sciences claims to conduct third-party testing, but does not specify which third-party does the testing. This is a positive sign, but the lack of visible GMP certification and undisclosed ingredient sourcing are areas for improvement.

Sigma Life Sciences Trust Summary

Trust Score: 75/100 (Good)
Grade: B+
Risk Level: LOW
Third-Party Tested: Yes (self-reported)
FDA Recalls: 0
Adverse Events: 0

Sigma Life Sciences 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 Tested

Third-party testing means an independent laboratory has verified this product's contents, purity, and potency match what's on the label.

FDA Record

FDA Warning Letters

Recalls

Adverse Reports

Clean record — no FDA warnings, recalls, or significant adverse events.

Is Sigma Life Sciences Third-Party Tested?

Yes — Sigma Life Sciences is Third-party tested. This means an independent laboratory has verified that the products' contents, purity, and potency match their label claims.

Is Sigma Life Sciences a Good Brand?

Sigma Life Sciences scores 75/100 (B+) — this is an average score. There may be room for improvement in testing transparency or certifications. Sigma Life Sciences 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 Sigma Life Sciences

Sigma Life Sciences is a US-based supplement company operating independently. The founding date is unknown. They offer a range of supplements marketed towards general health and wellness.

Product Specialization

Sigma Life Sciences focuses on herbal supplements and vitamins. Their product line includes a variety of single-ingredient and multi-ingredient formulas.

Testing & Certifications Explained

Sigma Life Sciences claims to use third-party testing, but does not specify which third-party does the testing. While this suggests an effort to verify product quality, the lack of a recognized certification makes it difficult for consumers to independently verify these claims. Without a clearly identified third-party, it's harder to assess the rigor and reliability of the testing process. The absence of GMP certification also raises concerns about manufacturing quality control.

How Sigma Life Sciences Compares

Compared to competitors like Nature Made (trust score 82/100, USP verified) and NOW Foods (trust score 88/100, Informed-Sport certified), Sigma Life Sciences' trust score is lower. These competitors often have more transparent certification and testing processes. However, Sigma Life Sciences scores higher than brands with known issues, or those that do not claim third-party testing.

Buying Guidance

Consumers interested in Sigma Life Sciences products should carefully examine product labels and consider contacting the company directly to inquire about their third-party testing procedures. Given the lack of GMP certification, purchasing from reputable retailers may provide an additional layer of assurance. Consider whether Sigma Life Sciences is third-party tested to your satisfaction before purchasing.

Frequently Asked Questions

Has Sigma Life Sciences had any recalls?

No — as of 2026, Sigma Life Sciences has zero FDA product recalls on record. They maintain a clean FDA record with no warning letters or significant adverse event reports. Sigma Life Sciences received a trust score of 75/100 from SupplementChecker.

Are Sigma Life Sciences supplements third-party tested?

Yes — Sigma Life Sciences supplements are third-party tested. They hold the following certifications: third-party tested (self-reported). Third-party testing means an independent lab has verified the product's contents, purity, and potency match the label claims.

Is Sigma Life Sciences safe?

Sigma Life Sciences received a trust score of 75/100 (grade: B+, risk level: LOW). This score is calculated from FDA records, third-party certifications, adverse event reports, and transparency practices. No FDA warnings or recalls are on record.

Grade A+ • Higher score

Want more comparisons? Browse our supplement categories or check our buying guides.

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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Quick Facts

Trust Score: 75/100
Grade: B+
Risk Level: LOW
Third-Party Tested: Yes
FDA Recalls: 0
Adverse Reports: 0

⚠ No GMP certification visible