Psilocybin is one of the safest substances you can find, much safer than alcohol, especially when taken in micro doses. Microdosing is proven to be safe and non-threatening. The only advice we would have is to not exceed the recommended dosage and frequency so you don’t extend beyond your limits and potentially experience some unwanted side effects, such as temporarily losing bodily functions and/or muscle weakness. However, even these are incredibly rare and will pass within a few hours. Follow the dosage instructions and you’re in the clear!
If by “safe” you mean “legal,” then the answer is yes, sort of. Psilocybin mushroom dispensaries operate in a bit of a grey area, just like medical marijuana dispensaries once did. But since mushrooms are a low schedule and we’re only talking about micro doses, you needn’t worry.