Grade: C

MEDIUM RISK

ProThera

Item: ProThera
Rating: 50
Author: SupplementChecker

ProThera has a SupplementChecker.co trust score of 50/100, a Grade of C, and a risk level of MEDIUM. ProThera does not claim to be third-party tested. Consumers should be aware of the lack of independent verification when considering ProThera products.

ProThera Trust Summary

Trust Score: 50/100 (Fair)
Grade: C
Risk Level: MEDIUM
Third-Party Tested: No
FDA Recalls: 0
Adverse Events: 1

ProThera 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 1 adverse event report.

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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

Is ProThera Third-Party Tested?

No — ProThera 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 ProThera a Good Brand?

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

About ProThera

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

Product Specialization

ProThera offers products in several supplement categories, including fish oil, herbal remedies, minerals, and vitamins. They provide a diverse selection of supplements catering to various health and wellness needs.

Testing & Certifications Explained

ProThera does not have any third-party certifications on record. This means that no independent organization has verified the quality, purity, or potency of their products. For consumers, this lack of certification means there is less assurance that the product contains what the label claims and is free from harmful contaminants. Consumers looking for third-party tested supplements should seek brands with certifications from organizations like USP, NSF, or Informed-Sport.

How ProThera Compares

Compared to brands like Thorne Research (trust score 85/100) and NOW Foods (trust score 78/100), ProThera's trust score of 50/100 is considerably lower. These competitors often have certifications from organizations like USP and NSF, indicating a higher level of independent quality verification. Other brands in the herbal and vitamin space, such as Gaia Herbs, also prioritize third-party testing.

Buying Guidance

Given ProThera's lack of third-party testing and ingredient sourcing transparency, consumers should exercise caution when purchasing their products. It is advisable to purchase ProThera supplements from reputable retailers and to carefully examine the product label. Consumers should also consider whether ProThera is third-party tested before buying.

Frequently Asked Questions

Has ProThera had any recalls?

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

Are ProThera supplements third-party tested?

No — ProThera 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 ProThera safe?

ProThera 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 ProThera a good brand?

ProThera 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: 4/9/2026.

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