Grade: F

CRITICAL RISK

Mannatech

Item: Mannatech
Rating: 20
Author: SupplementChecker

Okay, here's the content for the Mannatech brand profile page on SupplementCheck, in the requested format: **** Mannatech is a supplement brand offering products in the protein category. The brand currently has a Trust Score of 50/100 (Grade C). No third-party testing or GMP certifications are visible, but Mannatech has a clean FDA record with no warning letters, recalls, or adverse event reports on file. **

Mannatech Trust Summary

Trust Score: 20/100 (Poor)
Grade: F
Risk Level: CRITICAL
Third-Party Tested: No
FDA Recalls: 0
Adverse Events: 0
FTC Action: Yes

Mannatech has a trust score of 20/100 (Poor). 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 Mannatech

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

⚠Major FTC enforcement for deceptive health claims (2009)
⚠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.

FTC Enforcement Action

FTC settlement for unsubstantiated disease treatment claims

Year: 2009 Type: Deceptive Health Claims Settlement: $7M

Is Mannatech Third-Party Tested?

No — Mannatech 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 Mannatech a Good Brand?

Mannatech scores 20/100 (F) — this is a below-average score. We recommend considering brands with third-party certifications like NSF or USP. Mannatech has a clean FDA record with no warnings or recalls. The brand does not currently hold third-party testing certifications.

About Mannatech

Mannatech is a supplement brand in the dietary supplement industry. The company specializes in protein powders and sports nutrition. Mannatech has a trust score of 20/100 (Grade F), which may indicate areas for improvement in safety or transparency.

Product Specialization

Mannatech specializes in protein supplements including whey protein isolate, casein, and plant-based protein powders. Their protein products are designed to support muscle building, recovery, and daily protein intake goals for athletes and fitness enthusiasts.

Testing & Certifications Explained

Mannatech 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 Mannatech Compares

Within the protein powder market, Mannatech competes with established brands like Optimum Nutrition, Dymatize, and Isopure. Their trust score of 20/100 shows room for improvement compared to top-tier competitors in third-party testing and regulatory compliance.

Buying Guidance

Given Mannatech'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 Mannatech had any recalls?

No — as of 2026, Mannatech has zero FDA product recalls on record. They maintain a clean FDA record with no warning letters or significant adverse event reports. Mannatech received a trust score of 20/100 from SupplementChecker.

Are Mannatech supplements third-party tested?

No — Mannatech 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 Mannatech safe?

Mannatech received a trust score of 20/100 (grade: F, risk level: CRITICAL). 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 Mannatech a good brand?

Mannatech scores 20/100 (grade: F) — 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.

Does Mannatech have any FTC enforcement actions?

Yes. FTC settlement for unsubstantiated disease treatment claims The settlement was $7M (2009). This significantly impacts their trust score.

Compare Similar Brands

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

35/100

Lower rated

SMNutrition

Grade D • Higher score

35/100

Lower rated

Hydroxycut

Grade D • Higher score

35/100

Lower rated

Caltrate

Grade D • Higher score

30/100

Similar rating

Nutri-Dyn

Grade F • Compare details

30/100

Similar rating

Nature's Bounty

Grade F • Compare details

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 Mannatech'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/mannatech/" width="220" height="110" frameborder="0" loading="lazy" title="Mannatech trust score by SupplementChecker"></iframe>

Medium · 320×160

<iframe src="https://supplementchecker.co/embed/mannatech/" width="320" height="160" frameborder="0" loading="lazy" title="Mannatech trust score by SupplementChecker"></iframe>

Large · 420×210

<iframe src="https://supplementchecker.co/embed/mannatech/" width="420" height="210" frameborder="0" loading="lazy" title="Mannatech trust score by SupplementChecker"></iframe>

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

Want to find supplements you can trust?

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

See the best third-party tested supplements →