Grade: F

HIGH RISK

Swanson

Item: Swanson
Rating: 25
Author: SupplementChecker

https://www.swansonvitamins.com Est. 1969 (57 years)

Swanson has a Trust Score of 25/100, which is Grade F and represents HIGH risk. Swanson is GMP Certified but it is not clear if Swanson products are third-party tested for purity and potency. Swanson has one product recall on record and a high number of FDA adverse event reports.

Swanson Trust Summary

Trust Score: 25/100 (Poor)
Grade: F
Risk Level: HIGH
Third-Party Tested: No
FDA Recalls: 1
Adverse Events: 57
Years in Business: 57 years
GMP Certified: Yes

Swanson has a trust score of 25/100 (Poor). The brand is not third-party tested by NSF, USP, or Informed Sport, has 1 recall on record and 57 adverse event reports and has been in business for 57 years.

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Red Flags

⚠1 product recall(s) on record
⚠High number of FDA adverse event reports (57)
⚠No third-party testing certifications found

Verified Strengths

✓Established brand — operating since 1969 (57 years)

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 Swanson Third-Party Tested?

No — Swanson 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 Swanson a Good Brand?

Swanson scores 25/100 (F) — this is a below-average score. We recommend considering brands with third-party certifications like NSF or USP. Note: 1 product recall(s) are on record, which impacts the overall trust assessment. The brand does not currently hold third-party testing certifications.

About Swanson

Swanson is a supplement brand founded in 1969 and headquartered in the US. Swanson is an independent company that produces and sells a variety of supplements, including vitamins, minerals, herbs, and specialty supplements. Swanson is an established brand with a long history in the supplement industry.

Product Specialization

Swanson specializes in a wide range of vitamins, minerals, and herbal supplements. They offer products like Vitamin D, multivitamins, and various herbal extracts. Swanson also carries specialty supplements such as probiotics and omega-3 fatty acids.

Testing & Certifications Explained

Swanson is GMP Certified, which means their manufacturing processes adhere to certain quality standards. However, Swanson does not appear to conduct third-party testing on its products. This means that an independent laboratory does not verify the ingredients and potency of Swanson's supplements. Consumers seeking extra assurance of product quality often look for third-party tested supplements.

How Swanson Compares

Compared to other supplement brands, Swanson's Trust Score of 25/100 is lower than brands that prioritize third-party testing and transparency. For example, brands like Thorne Research (Trust Score: 92/100) and Klean Athlete (Trust Score: 88/100) undergo rigorous third-party testing and have higher trust scores. Other brands like NOW Foods (Trust Score: 75/100) also have higher trust scores than Swanson.

Buying Guidance

Given Swanson's Trust Score and lack of third-party testing, consumers should carefully evaluate whether Swanson is safe for their individual needs. Consumers should consider looking for third-party tested supplements from brands with higher trust scores. Purchase Swanson products directly from the manufacturer or authorized retailers to ensure authenticity.

Frequently Asked Questions

Has Swanson had any recalls?

Yes — as of 2026, Swanson has 1 FDA product recall(s) on record. There are also 57 adverse event reports filed with the FDA. Swanson received a trust score of 25/100 from SupplementChecker.

Are Swanson supplements third-party tested?

No — Swanson 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 Swanson safe?

Swanson received a trust score of 25/100 (grade: F, risk level: HIGH). This score is calculated from FDA records, third-party certifications, adverse event reports, and transparency practices. Note: 1 product recall(s) are on record.

Is Swanson a good brand?

Swanson scores 25/100 (grade: F) — 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. Note: 1 recall(s) are on record.

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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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