With a Microdosing regimin, you take it 2x/week for a relatively short period of time, which is not enough to cause valvulopathy (the disorder you're referring

With a Microdosing regimin, you take it 2x/week for a relatively short period of time, which is not enough to cause valvulopathy (the disorder you're referring to). Typically this is caused by people taking medication every day for an extended period of time (there are non-psychoactive medications that also are 5-HT2A agonists, which did cause this kind of damage before being pulled from the market)