Grade: C

MEDIUM RISK

Jamieson Natural Sources

Item: Jamieson Natural Sources
Rating: 50
Author: SupplementChecker

Jamieson Natural Sources has a SupplementChecker.co trust score of 50/100, which translates to a grade of C and a MEDIUM risk level. Notably, there is no evidence of third-party testing certifications for Jamieson Natural Sources products. This impacts the overall assessment of whether Jamieson Natural Sources is a good brand.

Jamieson Natural Sources Trust Summary

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

Jamieson Natural Sources 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.

Where to Buy Jamieson Natural Sources

Purchase from trusted retailers. We may earn a commission at no extra cost to you.

Buy on iHerb Buy on Amazon

Check another brand:

e.g. Nature Made, Thorne, NOW Foods...

Check

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 Jamieson Natural Sources Third-Party Tested?

No — Jamieson Natural Sources 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 Jamieson Natural Sources a Good Brand?

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

About Jamieson Natural Sources

Jamieson Natural Sources is a supplement brand operating independently in the US. The founding date is unknown. They offer a range of supplements and position themselves within the broader health and wellness market.

Product Specialization

Jamieson Natural Sources specializes in herbal supplements. While they may offer a variety of products, they are primarily known for their herbal remedies and formulations.

Testing & Certifications Explained

Jamieson Natural Sources does not appear to have any third-party testing certifications. This means that independent organizations are not verifying the quality, purity, or potency of their products. For consumers, this lack of certification increases the risk that the product may not contain the ingredients listed on the label, or that it may contain contaminants. The absence of GMP certification also means that their manufacturing processes have not been independently verified.

How Jamieson Natural Sources Compares

Compared to other brands in the supplement market, Jamieson Natural Sources' trust score of 50/100 is lower than brands with verified third-party testing. For example, a brand like Thorne Research (trust score 90/100) has extensive certifications. Nature Made (trust score 75/100) also demonstrates more robust testing protocols. These brands often invest in certifications to build consumer confidence.

Buying Guidance

Given the lack of third-party testing certifications and the Jamieson Natural Sources trust score, consumers should exercise caution when purchasing Jamieson Natural Sources products. Look for products with verifiable certifications, and consider consulting with a healthcare professional before starting any new supplement regimen. Always purchase from reputable retailers to minimize the risk of counterfeit products.

Frequently Asked Questions

Has Jamieson Natural Sources had any recalls?

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

Are Jamieson Natural Sources supplements third-party tested?

No — Jamieson Natural Sources 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 Jamieson Natural Sources safe?

Jamieson Natural Sources 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 Jamieson Natural Sources a good brand?

Jamieson Natural Sources 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.

Get FDA Recall Alerts

We'll notify you when FDA recalls affect supplement brands you care about.

Compare Similar Brands

Brands in similar categories with comparable trust profiles. Compare certifications, scores, and safety records.

65/100

Lower rated

Brightside

Grade B • Higher score

65/100

Lower rated

Outwork Nutrition

Grade B • Higher score

65/100

Lower rated

Vital Vitamins

Grade B • Higher score

65/100

Lower rated

Thesis

Grade B • Higher score

65/100

Lower rated

Traditional Medicinals

Grade B • 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.

Promote Your Trust Score

Embed this badge on your site — it displays Jamieson Natural Sources's verified trust score and links back to this profile page. Helps show buyers you're transparent about third-party testing.

Small · 220×110

<iframe src="https://supplementchecker.co/embed/jamieson-natural-sources/" width="220" height="110" frameborder="0" loading="lazy" title="Jamieson Natural Sources trust score by SupplementChecker"></iframe>

Medium · 320×160

<iframe src="https://supplementchecker.co/embed/jamieson-natural-sources/" width="320" height="160" frameborder="0" loading="lazy" title="Jamieson Natural Sources trust score by SupplementChecker"></iframe>

Large · 420×210

<iframe src="https://supplementchecker.co/embed/jamieson-natural-sources/" width="420" height="210" frameborder="0" loading="lazy" title="Jamieson Natural Sources trust score by SupplementChecker"></iframe>

Paste the snippet anywhere on your site. The badge updates automatically when Jamieson Natural Sources's trust score changes.

Own this brand? Contact us to update your information.

Want to find supplements you can trust?

Third-party testing is the single best indicator of supplement quality. We analyzed Jamieson Natural Sources and 500+ other brands to find the ones that actually prove what's on the label.

See the best third-party tested supplements →