FDA did not approve it, that is the highest level and requires proof that it is more effective than placebo I believe. The FDA only looked for adverse events in the data and granted authorization to market it as they determined it is very low risk for adverse events. But people will be mislead by the FDA-authorized status as some kind of FDA blessing that it works: https://www.fda.gov/news-events/press-announcements/fda-perm...