Longreen

Longreen receives a brand trust score of 0/100 in GoodSupp's independent analysis. The company was founded in 2008 and is headquartered in Los Angeles, USA and Kowloon Bay, Hong Kong. They hold 1 verified certifications including Consumerlab. These certifications are independently verified by GoodSupp and indicate the brand meets recognized quality, purity, and manufacturing standards. Note: Longreen has 1 historical regulatory incident on record. These are factored into the overall trust score and are detailed in the violation history section above.

Yes. Longreen holds 1 verified third-party certifications: Consumerlab. Third-party testing means an independent laboratory — not the supplement company itself — has verified the product's contents, purity, and/or manufacturing practices. This is one of the strongest indicators of supplement quality because it removes the conflict of interest inherent in self-testing. Not all certifications are equal: NSF International and USP are considered the gold standard, while GMP certification indicates proper manufacturing practices.

Based on GoodSupp's quality analysis, the highest-rated Longreen supplements are: GlucoBalance Tea, 20 Tea Bags, 2.12 oz (60 g) (score: 81/100). 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.

Longreen is headquartered in Los Angeles, USA and Kowloon Bay, Hong Kong. The company was founded in 2008. They currently offer 1 products in their supplement lineup. Their official website is longreen.net. Manufacturing location may differ from corporate headquarters — look for GMP certification to verify manufacturing quality standards.