Grade: C

MEDIUM RISK

SierraSil

Item: SierraSil
Rating: 50
Author: SupplementChecker

SierraSil has a SupplementChecker.co trust score of 50/100, which is a Grade C, indicating a MEDIUM risk level. No third-party testing certifications were found for SierraSil products. Consumers wondering "is SierraSil third-party tested?" should note the absence of these certifications.

SierraSil Trust Summary

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

SierraSil 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 SierraSil Third-Party Tested?

No — SierraSil 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 SierraSil a Good Brand?

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

About SierraSil

SierraSil is a US-based supplement brand operating independently. The founding date is unknown. They primarily offer products in the minerals category. The "SierraSil trust score" is 50/100.

Product Specialization

SierraSil specializes in mineral supplements. Specific product types include formulations designed to support joint health and overall wellness.

Testing & Certifications Explained

SierraSil does not appear to have any third-party testing certifications. This means that independent organizations are not verifying the quality, purity, or potency of SierraSil's products. Consumers should be aware that the absence of these certifications means there is less independent assurance of what is in the product and whether it matches the label claims.

How SierraSil Compares

Compared to other brands in the mineral supplement category, SierraSil's trust score of 50/100 falls below brands with comprehensive third-party testing. For example, a brand like Thorne Research (trust score 90/100) has extensive certifications. Other competitors like NOW Foods (trust score 75/100) also demonstrate a higher level of third-party testing and transparency. This information may be helpful when reading "SierraSil reviews".

Buying Guidance

Given SierraSil's trust score and lack of third-party certifications, consumers should exercise caution. Purchase from reputable retailers and carefully examine product labels. If possible, seek out brands that invest in "third-party tested supplements" for greater assurance of quality.

Frequently Asked Questions

Has SierraSil had any recalls?

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

Are SierraSil supplements third-party tested?

No — SierraSil 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 SierraSil safe?

SierraSil 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 SierraSil a good brand?

SierraSil 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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