Grade: D

HIGH RISK

Sisu

Item: Sisu
Rating: 40
Author: SupplementChecker

Part of Nestle Health Science

https://www.sfrx.com Est. 1987 (39 years)

Sisu has a SupplementChecker trust score of 40/100, which is a Grade D, indicating a HIGH risk level. No third-party testing certifications were found for Sisu products. The brand has one product recall on record.

Sisu Trust Summary

Trust Score: 40/100 (Below Average)
Grade: D
Risk Level: HIGH
Third-Party Tested: No
Recalls: 1
Adverse Events: 0
Years in Business: 39 years
GMP Certified: Yes

Sisu has a trust score of 40/100 (Below Average). The brand is not third-party tested by NSF, USP, or Informed Sport, has 1 Health Canada recall on record and no adverse event reports and has been in business for 39 years.

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Red Flags

⚠1 product recall(s) on record
⚠No third-party testing certifications found

Verified Strengths

✓Established brand — operating since 1987 (39 years)

Certifications

GMP Certified

GMP certification ensures manufacturing quality standards are met, but does not verify that product contents match the label through independent testing. Look for NSF, USP, or Informed Sport certifications for third-party verified products.

Regulatory Record

FDA Warning Letters

Recalls

Adverse Reports

Recall History

Recalled by Health Canada Feb 8, 2018

Sisu Natural Health Products (2018-02-09)

Is Sisu Third-Party Tested?

No — Sisu is not currently third-party tested by independent certifiers like NSF, USP, or Informed Sport. They do hold GMP certification, which ensures manufacturing quality but does not independently verify product contents. 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 Sisu a Good Brand?

Sisu scores 40/100 (D) — this is a below-average score. We recommend considering brands with third-party certifications like NSF or USP. Note: 1 product recall(s) are on record, which impacts the overall trust assessment. The brand does not currently hold third-party testing certifications.

About Sisu

Sisu is a vitamins and minerals brand founded in 1987, giving them 39 years in the supplement industry. Sisu is owned by parent company Nestle Health Science and headquartered in the US. They offer a range of supplements.

Product Specialization

Sisu specializes in vitamins and minerals. Their product line includes a variety of supplements, such as multivitamins, single-ingredient vitamins like Vitamin D and Vitamin C, and mineral supplements like magnesium and calcium.

Testing & Certifications Explained

Sisu is GMP Certified. GMP certification means that Sisu adheres to Good Manufacturing Practices, which are a set of standards ensuring the quality and safety of the manufacturing process. However, Sisu does not appear to have third-party testing certifications. This means that independent organizations do not verify the contents and purity of Sisu products, so it is difficult to verify if Sisu is third-party tested.

How Sisu Compares

Compared to other vitamin and mineral brands, Sisu's trust score of 40/100 is lower than some competitors. For example, Thorne Research (trust score 92/100) and Klean Athlete (trust score 88/100) both have higher trust scores and are third-party tested supplements. These brands invest in more rigorous testing and transparency practices.

Buying Guidance

Given Sisu's trust score and lack of third-party testing, consumers should carefully consider their options. It is advisable to consult with a healthcare professional before taking any new supplement. If you choose to purchase Sisu products, check for any available Sisu reviews and be aware of the Sisu recall history.

Frequently Asked Questions

Has Sisu had any recalls?

Yes — as of 2026, Sisu has 1 Health Canada product recall(s) on record. Sisu received a trust score of 40/100 from SupplementChecker.

Are Sisu supplements third-party tested?

No — Sisu supplements are not currently third-party tested by independent certifiers like NSF, USP, or Informed Sport. They do have GMP (Good Manufacturing Practice) certification, which ensures manufacturing quality but does not independently verify product contents.

Is Sisu safe?

Sisu received a trust score of 40/100 (grade: D, risk level: HIGH). This score is calculated from regulatory records (FDA and Health Canada), third-party certifications, adverse event reports, and transparency practices. Note: 1 product recall(s) are on record.

Is Sisu a good brand?

Sisu scores 40/100 (grade: D) — 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. Note: 1 recall(s) are on record.

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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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