Grade: C

MEDIUM RISK

DietWorks

Item: DietWorks
Rating: 50
Author: SupplementChecker

DietWorks has a SupplementChecker.co trust score of 50/100, which translates to a grade of C and a MEDIUM risk level. DietWorks does not appear to provide third-party testing certifications for its products. Consumers should be aware of this when considering DietWorks products.

DietWorks Trust Summary

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

DietWorks 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 DietWorks Third-Party Tested?

No — DietWorks 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 DietWorks a Good Brand?

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

About DietWorks

DietWorks is an independent supplement brand operating in the US. The company's founding date is unknown. DietWorks offers a range of supplements, focusing on products in the health and wellness sector.

Product Specialization

DietWorks specializes in fish oil and herbal supplements. Their product line includes various formulations of fish oil capsules and a range of herbal remedies targeting different health concerns.

Testing & Certifications Explained

DietWorks does not appear to have any third-party certifications. This means that there is no independent organization verifying the quality, purity, or potency of their products. For consumers, this lack of certification increases the risk that the product may not contain the ingredients listed on the label or may contain contaminants. The question of "is DietWorks third-party tested" is therefore answered negatively.

How DietWorks Compares

Compared to competitors like Nordic Naturals (trust score 92/100) and NOW Foods (trust score 85/100), DietWorks' trust score is considerably lower. Both Nordic Naturals and NOW Foods provide extensive third-party testing and certifications. Another competitor, Nature's Bounty (trust score 65/100), also demonstrates a higher level of transparency than DietWorks.

Buying Guidance

Given DietWorks' trust score and lack of third-party testing, consumers should exercise caution when purchasing their products. If you choose to buy DietWorks supplements, purchase from reputable retailers and carefully examine the product label. Look for any available information on ingredient sourcing or manufacturing practices, though this may be limited.

Frequently Asked Questions

Has DietWorks had any recalls?

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

Are DietWorks supplements third-party tested?

No — DietWorks 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 DietWorks safe?

DietWorks 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 DietWorks a good brand?

DietWorks 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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