Guang Ci Tang

Guang Ci Tang receives a brand trust score of 90/100 in GoodSupp's independent analysis. The company was founded in 1990 and is headquartered in San Diego, CA, 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: Guang Ci Tang has 2 historical regulatory incidents on record. These are factored into the overall trust score and are detailed in the violation history section above.

GoodSupp's research did not find verified third-party testing certifications for Guang Ci Tang. 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 Guang Ci Tang's products are low quality, but it does mean there's less independent verification of their claims.

Based on GoodSupp's quality analysis, the highest-rated Guang Ci Tang supplements are: Xiao Feng Pian Skin WindClear 200 mg (score: 83/100); Xue Fu Zhu Yu Pian Blood StasisClear 200 mg (score: 62/100). 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.

Guang Ci Tang is headquartered in San Diego, CA, USA. The company was founded in 1990. They currently offer 119 products in their supplement lineup. Their official website is activeherb.com. Manufacturing location may differ from corporate headquarters — look for GMP certification to verify manufacturing quality standards.