Grade: C

MEDIUM RISK

Os-Cal

Item: Os-Cal
Rating: 50
Author: SupplementChecker

Os-Cal has a SupplementChecker trust score of 50/100, a Grade C, indicating a MEDIUM risk level. Notably, Os-Cal does not appear to have any third-party testing certifications, which is a key factor in our brand trust assessment. Consumers wondering "is Os-Cal a good brand?" should carefully consider the lack of independent verification of product quality and safety.

Os-Cal Trust Summary

Trust Score: 50/100 (Fair)
Grade: C
Risk Level: MEDIUM
Third-Party Tested: No
FDA Recalls: 0
Adverse Events: 4

Os-Cal 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 4 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

Is Os-Cal Third-Party Tested?

No — Os-Cal 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 Os-Cal a Good Brand?

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

About Os-Cal

Os-Cal is a US-based supplement brand operating independently. The founding date is unknown. They offer products in the specialty supplement category.

Product Specialization

Os-Cal specializes in specialty supplements. Specific product types are not specified.

Testing & Certifications Explained

Os-Cal does not appear to have any third-party testing certifications. This means that independent organizations are not verifying the quality, purity, or potency of Os-Cal products. Consumers should be aware that the absence of certifications means there is no independent assurance that the product contains what the label claims and is free from contaminants.

How Os-Cal Compares

Compared to other brands in the specialty supplement category, Os-Cal's trust score of 50/100 is lower than brands that prioritize third-party testing. For example, a brand like Thorne Research (trust score 90/100) undergoes rigorous testing and certification. Another competitor, Klean Athlete (trust score 85/100), also emphasizes third-party verification. These brands demonstrate a higher commitment to transparency and quality assurance.

Buying Guidance

Given the lack of third-party testing, consumers should carefully evaluate Os-Cal products before purchasing. Look for "Os-Cal reviews" from independent sources. If you choose to use Os-Cal, purchase from reputable retailers and carefully examine the product packaging for any signs of tampering.

Frequently Asked Questions

Has Os-Cal had any recalls?

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

Are Os-Cal supplements third-party tested?

No — Os-Cal 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 Os-Cal safe?

Os-Cal 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 Os-Cal a good brand?

Os-Cal 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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