Grade: C

MEDIUM RISK

Natural Factors BioSil

Item: Natural Factors BioSil
Rating: 50
Author: SupplementChecker

Okay, here's the content for the Natural Factors BioSil brand profile page on SupplementCheck, following your specified format: **** Natural Factors BioSil is a specialty supplement known for its focus on collagen production. The brand lacks third-party testing certifications and a visible GMP certification. However, it has a clean FDA record with no warning letters, recalls, or adverse event reports on file. **

Natural Factors BioSil Trust Summary

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

Natural Factors BioSil 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 Natural Factors BioSil

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 Natural Factors BioSil Third-Party Tested?

No — Natural Factors BioSil 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 Natural Factors BioSil a Good Brand?

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

About Natural Factors BioSil

Natural Factors BioSil is a supplement brand in the dietary supplement industry. Natural Factors BioSil has a trust score of 50/100 (Grade C), which may indicate areas for improvement in safety or transparency.

Product Specialization

Natural Factors BioSil focuses on Specialty supplements. Their product line is designed to meet specific health and wellness needs within these categories, offering targeted nutritional support for various consumer goals.

Testing & Certifications Explained

Natural Factors BioSil does not appear to have third-party testing certifications from recognized organizations like NSF, USP, or Informed Sport. This means their supplements have not been independently verified for purity, potency, or banned substances. Consumers should be aware that ingredient quality and label accuracy are not externally validated.

How Natural Factors BioSil Compares

In the broader supplement industry, Natural Factors BioSil competes with both specialized and general nutrition brands. Their trust score of 50/100 shows room for improvement compared to industry leaders who typically maintain higher third-party certification standards and cleaner regulatory records.

Buying Guidance

Given Natural Factors BioSil's lower trust score, consumers should exercise caution and consider alternatives with stronger safety records. If purchasing, verify ingredient sources, check for recent lab testing, and consult healthcare providers.

Frequently Asked Questions

Has Natural Factors BioSil had any recalls?

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

Are Natural Factors BioSil supplements third-party tested?

No — Natural Factors BioSil 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 Natural Factors BioSil safe?

Natural Factors BioSil 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 Natural Factors BioSil a good brand?

Natural Factors BioSil 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.

Compare Similar Brands

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

65/100

Lower rated

Beam

Grade B • Higher score

65/100

Lower rated

Mountain Rose Herbs

Grade B • Higher score

65/100

Lower rated

RYSE

Grade B • Higher score

65/100

Lower rated

Mixhers

Grade B • Higher score

65/100

Lower rated

Perelel

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: 4/4/2026.

Promote Your Trust Score

Embed this badge on your site — it displays Natural Factors BioSil'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/natural-factors-biosil/" width="220" height="110" frameborder="0" loading="lazy" title="Natural Factors BioSil trust score by SupplementChecker"></iframe>

Medium · 320×160

<iframe src="https://supplementchecker.co/embed/natural-factors-biosil/" width="320" height="160" frameborder="0" loading="lazy" title="Natural Factors BioSil trust score by SupplementChecker"></iframe>

Large · 420×210

<iframe src="https://supplementchecker.co/embed/natural-factors-biosil/" width="420" height="210" frameborder="0" loading="lazy" title="Natural Factors BioSil trust score by SupplementChecker"></iframe>

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

Want to find supplements you can trust?

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

See the best third-party tested supplements →