From your question, I make the assumption
that you are not so familiar with shrooms.
Well, it depends on how high you want to go.
If you just want to feel the effects, have a nice time
but be in position of going and hanging out, 0.25g or even
less is suitable; however, if you want to have a strong
trip with visuals that obviously will be a problem when
meeting sober friends and talking to strangers, you can
take half a gram. If you really want to explore yourself
sealed up in your premises, for as long as the trip lasts,
take one gram by yourself.
It also depends on how your body reacts to psilocyn,
so dont take what I wrote as a golden rule; that is what
shrooms effects like, for my body.
take care
kykeon
athens, greece