Plum Flower

Q: Is Plum Flower a trustworthy supplement brand?

Plum Flower receives a brand trust score of 86/100 in GoodSupp's independent analysis. The company was founded in 1969 and is headquartered in Oakland, California, USA. Our research did not find independently verified third-party certifications for this brand. While this doesn't mean their products are low quality, third-party testing is considered a strong indicator of commitment to quality assurance. Note: Plum Flower has 2 historical regulatory incidents on record. These are factored into the overall trust score and are detailed in the violation history section above.

Founded 1969 · Oakland, California, USA · 192 products · mayway.com/

Brand Score

Certifications

1 certification

Fda Gmp Inspections Source available Primary evidence

Transparency Claims

5 claims

Third Party Testing Claim — Evidence available Evidence

Coa Availability — Evidence available Evidence

In House Testing — Evidence available Evidence

Testing Lab Disclosure — Brand claim; evidence unavailable checked 2026-05-05

Violation History

2 incidents

Prop 65 Chemicals known to the State of California to cause cancer and/or reproductive toxicity2000 Source available Primary source

Lawsuit Failure to warn purchasers and individuals using their products about exposure to chemicals known to the State of California to cause cancer and/or reproductive toxicity, in violation of Proposition 65.2000 Source available Primary source

Products by Plum Flower

Tienchi

Product 93 Brand 86

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Frequently Asked Questions

Is Plum Flower a trustworthy supplement brand?

Plum Flower receives a brand trust score of 86/100 in GoodSupp's independent analysis. The company was founded in 1969 and is headquartered in Oakland, California, USA. Our research did not find independently verified third-party certifications for this brand. While this doesn't mean their products are low quality, third-party testing is considered a strong indicator of commitment to quality assurance. Note: Plum Flower has 2 historical regulatory incidents on record. These are factored into the overall trust score and are detailed in the violation history section above.

Is Plum Flower third-party tested?

GoodSupp's research did not find verified third-party testing certifications for Plum Flower. Third-party testing by organizations like NSF International, USP, or Informed Sport is considered one of the strongest indicators of supplement quality. Without it, consumers must rely more heavily on the brand's own quality claims. This doesn't necessarily mean Plum Flower's products are low quality, but it does mean there's less independent verification of their claims.

What are the best Plum Flower supplements?

Based on GoodSupp's quality analysis, the highest-rated Plum Flower supplements are: Tienchi (score: 93/100). These scores are calculated from ingredient quality, dosage adequacy, bioavailability, label transparency, and inactive ingredient safety. Scores can vary significantly across a brand's product line — a high brand trust score doesn't guarantee every individual product is top-quality.

Where is Plum Flower located?

Plum Flower is headquartered in Oakland, California, USA. The company was founded in 1969. They currently offer 192 products in their supplement lineup. Their official website is mayway.com. Manufacturing location may differ from corporate headquarters — look for GMP certification to verify manufacturing quality standards.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records — read our methodology. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.