Grade: B+

MEDIUM RISK

Metamucil

Item: Metamucil
Rating: 70
Author: SupplementChecker

Part of Procter & Gamble

https://www.metamucil.com Est. 1934 (92 years)

Metamucil has a Trust Score of 70/100, which translates to a grade of B+ and a MEDIUM risk level. Metamucil is GMP Certified, but it's important to note that it does not appear to be third-party tested. Considering its long history and clean FDA record, Metamucil may be a reasonable option for some consumers, but those prioritizing independent verification may wish to seek brands with more comprehensive testing protocols.

Metamucil Trust Summary

Trust Score: 70/100 (Good)
Grade: B+
Risk Level: MEDIUM
Third-Party Tested: No
FDA Recalls: 0
Adverse Events: 1
Years in Business: 92 years
GMP Certified: Yes

Metamucil has a trust score of 70/100 (Good). The brand is not third-party tested by NSF, USP, or Informed Sport, has no FDA recalls on record and 1 adverse event report and has been in business for 92 years.

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Red Flags

⚠No third-party testing certifications found

Verified Strengths

✓Established brand — operating since 1934 (92 years)
✓Clean FDA record — no warnings, recalls, or significant adverse events

Certifications

GMP Certified

GMP certification ensures manufacturing quality standards are met, but does not verify that product contents match the label through independent testing. Look for NSF, USP, or Informed Sport certifications for third-party verified products.

FDA Record

FDA Warning Letters

Recalls

Adverse Reports

Is Metamucil Third-Party Tested?

No — Metamucil is not currently third-party tested by independent certifiers like NSF, USP, or Informed Sport. They do hold GMP certification, which ensures manufacturing quality but does not independently verify product contents. 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 Metamucil a Good Brand?

Metamucil scores 70/100 (B+) — this is an average score. There may be room for improvement in testing transparency or certifications. Metamucil has a clean FDA record with no warnings or recalls. The brand does not currently hold third-party testing certifications.

About Metamucil

Metamucil is a brand of fiber supplements owned by Procter & Gamble. Founded in 1934, Metamucil has been a long-standing presence in the digestive health market. The brand is headquartered in the US and is widely recognized for its fiber-based products aimed at promoting regularity and digestive wellness.

Product Specialization

Metamucil specializes in fiber supplements and digestive health products. They are best known for their psyllium fiber powders and capsules, which are marketed to help with regularity, lower cholesterol, and support overall digestive health. Their product line includes various flavors and formulations to suit different consumer preferences.

Testing & Certifications Explained

Metamucil is GMP Certified, meaning the manufacturing facility adheres to Good Manufacturing Practices as verified by a certifying body. However, there is no evidence that Metamucil products are third-party tested. Third-party testing involves independent labs verifying the contents and purity of supplements, providing an extra layer of assurance for consumers. The absence of third-party testing means that the brand's claims are not independently verified, which may be a concern for some consumers.

How Metamucil Compares

Compared to competitors in the fiber supplement market, Metamucil's Trust Score of 70/100 places it in a similar range to some established brands. For example, NOW Foods, another player in the supplement space, often has products that are third-party tested and carries a similar trust score. Benefiber, another competitor, may have a similar profile regarding third-party testing. Consumers should compare the specific certifications and testing practices of each brand to determine which best aligns with their needs. When considering is Metamucil third-party tested, it's important to compare it with competitors that do offer this added layer of security.

Buying Guidance

When considering purchasing Metamucil, check the product packaging for the most up-to-date ingredient information and manufacturing details. Given that Metamucil does not appear to be third-party tested, consumers may want to carefully evaluate their individual needs and risk tolerance. Purchase from reputable retailers to ensure product authenticity.

Frequently Asked Questions

Has Metamucil had any recalls?

No — as of 2026, Metamucil has zero FDA product recalls on record. They maintain a clean FDA record with no warning letters or significant adverse event reports. Metamucil received a trust score of 70/100 from SupplementChecker.

Are Metamucil supplements third-party tested?

No — Metamucil supplements are not currently third-party tested by independent certifiers like NSF, USP, or Informed Sport. They do have GMP (Good Manufacturing Practice) certification, which ensures manufacturing quality but does not independently verify product contents.

Is Metamucil safe?

Metamucil received a trust score of 70/100 (grade: B+, 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 Metamucil a good brand?

Metamucil scores 70/100 (grade: B+) — this is an average score. There may be room for improvement in testing transparency or certifications. 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: 4/9/2026.

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