Lewis Labs

Lewis Labs receives a brand trust score of 0/100 in GoodSupp's independent analysis. The company was founded in 1973 and is headquartered in Southfields, NY, 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. No FDA warning letters, recalls, or regulatory violations were found in our research.

GoodSupp's research did not find verified third-party testing certifications for Lewis Labs. 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 Lewis Labs'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 Lewis Labs supplements are: Copos levadura cerveza, 12.35 oz (score: 100/100); Brewer's Yeast™, 12.35 oz (350 g) (score: 75/100); Nutritional Yeast Flakes, Cheesy Nutty, 16 oz (454 g) (score: 72/100). 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.

Lewis Labs is headquartered in Southfields, NY, USA. The company was founded in 1973. They currently offer 3 products in their supplement lineup. Their official website is lewislabs.com. Manufacturing location may differ from corporate headquarters — look for GMP certification to verify manufacturing quality standards.