Grade: C

MEDIUM RISK

Signature Supplements

Item: Signature Supplements
Rating: 50
Author: SupplementChecker

Here's the content for the Signature Supplements brand profile page on SupplementCheck: **** Signature Supplements offers a range of products in the herbal, mineral, protein, and vitamin categories. The brand has a clean FDA record with no warning letters, recalls, or adverse event reports. However, Signature Supplements lacks third-party testing certifications and does not publish lab results. **

Signature Supplements Trust Summary

Trust Score: 50/100 (Fair)
Grade: C
Risk Level: MEDIUM
Third-Party Tested: No
FDA Recalls: 0
Adverse Events: 0

Signature Supplements has a trust score of 50/100 (Fair). The brand is not third-party tested by NSF, USP, or Informed Sport, has no FDA recalls on record and no adverse event reports.

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Red Flags

⚠No third-party testing certifications found
⚠No GMP certification visible

Verified Strengths

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

Certifications

No certifications on record. This brand has not demonstrated GMP compliance or third-party testing verification.

FDA Record

FDA Warning Letters

Recalls

Adverse Reports

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

Is Signature Supplements Third-Party Tested?

No — Signature Supplements is not currently third-party tested by independent certifiers like NSF, USP, or Informed Sport. No GMP certification was found on record either. We recommend looking for brands with verified third-party testing for the highest confidence in product quality. See our guide to third-party tested supplements.

Is Signature Supplements a Good Brand?

Signature Supplements scores 50/100 (C) — this is a below-average score. We recommend considering brands with third-party certifications like NSF or USP. Signature Supplements has a clean FDA record with no warnings or recalls. The brand does not currently hold third-party testing certifications.

About Signature Supplements

Signature Supplements is a supplement brand in the dietary supplement industry. The company specializes in herbal extracts and botanical supplements, mineral supplements and micronutrients, and protein powders and sports nutrition. Signature Supplements has a trust score of 50/100 (Grade C), which may indicate areas for improvement in safety or transparency.

Product Specialization

Signature Supplements specializes in herbal and botanical supplements featuring traditional ingredients like turmeric, ashwagandha, ginkgo biloba, and other plant-based compounds. Their herbal line targets various wellness areas from stress management to cognitive support.

Testing & Certifications Explained

Signature Supplements does not appear to have third-party testing certifications from recognized organizations like NSF, USP, or Informed Sport. This means their supplements have not been independently verified for purity, potency, or banned substances. Consumers should be aware that ingredient quality and label accuracy are not externally validated.

How Signature Supplements Compares

Within the protein powder market, Signature Supplements competes with established brands like Optimum Nutrition, Dymatize, and Isopure. Their trust score of 50/100 shows room for improvement compared to top-tier competitors in third-party testing and regulatory compliance.

Buying Guidance

Given Signature Supplements's lower trust score, consumers should exercise caution and consider alternatives with stronger safety records. If purchasing, verify ingredient sources, check for recent lab testing, and consult healthcare providers.

Frequently Asked Questions

Has Signature Supplements had any recalls?

No — as of 2026, Signature Supplements has zero FDA product recalls on record. They maintain a clean FDA record with no warning letters or significant adverse event reports. Signature Supplements received a trust score of 50/100 from SupplementChecker.

Are Signature Supplements supplements third-party tested?

No — Signature Supplements supplements are not currently third-party tested by independent certifiers like NSF, USP, or Informed Sport. No independent testing or GMP certification was found on record.

Is Signature Supplements safe?

Signature Supplements received a trust score of 50/100 (grade: C, risk level: MEDIUM). This score is calculated from FDA records, third-party certifications, adverse event reports, and transparency practices. No FDA warnings or recalls are on record.

Is Signature Supplements a good brand?

Signature Supplements scores 50/100 (grade: C) — this is below average. We recommend looking for brands with third-party certifications like NSF or USP. They do not currently hold third-party testing certifications like NSF, USP, or Informed Sport. No FDA warnings or recalls found.

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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: 4/4/2026.

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