Grade: C

MEDIUM RISK

Resistance C

Item: Resistance C
Rating: 50
Author: SupplementChecker

Resistance C has a Trust Score of 50/100, which translates to a grade of C and a MEDIUM risk level. Resistance C does not appear to use third-party testing for their supplements. Consumers should consider these factors when evaluating if Resistance C is a good brand for their needs.

Resistance C Trust Summary

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

Resistance C 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 Resistance C Third-Party Tested?

No — Resistance C 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 Resistance C a Good Brand?

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

About Resistance C

Resistance C is an independent vitamin brand operating in the US. The founding date of Resistance C is unknown. They offer supplements direct to consumers and through online retailers.

Product Specialization

Resistance C specializes in vitamins. They are known for offering vitamin C supplements.

Testing & Certifications Explained

Resistance C does not appear to have any third-party testing certifications. This means that independent organizations are not verifying the contents and purity of their supplements. Consumers should be aware that the absence of third-party testing makes it more difficult to confirm label accuracy and the absence of contaminants. Therefore, it is difficult to assess if Resistance C is third-party tested.

How Resistance C Compares

Many vitamin brands prioritize third-party testing to build consumer trust. For example, competitor brands like Thorne Research (Trust Score 92/100) and Klean Athlete (Trust Score 88/100) undergo rigorous testing and certification processes. Garden of Life (Trust Score 75/100) also publishes some lab results. Resistance C's lack of certifications places them at a disadvantage compared to these brands.

Buying Guidance

Given Resistance C's Trust Score and lack of third-party testing, consumers should carefully evaluate their products. Purchase from reputable retailers and check for any available information on product quality. Look for third-party tested supplements if you want more assurance.

Frequently Asked Questions

Has Resistance C had any recalls?

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

Are Resistance C supplements third-party tested?

No — Resistance C 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 Resistance C safe?

Resistance C 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 Resistance C a good brand?

Resistance C 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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