The Food and Drug Administration (FDA) has issued a public warning after laboratory tests revealed microbial contamination in the popular herbal inhaler "Hong Thai Formula 2", registration number G 309/62. The product, manufactured by Hong Thai Panich, has been declared substandard under the Herbal Product Act.

According to the FDA announcement, dated Oct 20, samples of Hong Thai Herbal Inhaler Formula 2 were collected from the manufacturing site and submitted to the Department of Medical Sciences for laboratory testing.

The results showed that the product failed to meet microbial safety standards, with contamination detected in three categories: total aerobic microbial count, total combined yeasts and mould count, and Clostridium spp., a spore-forming bacterium.

These findings are a violation of the Ministry of Public Health's 2021 regulation on quality standards for registered herbal formulations.

The FDA has classified the product as substandard under the Herbal Product Act 2019.