Mescaline question

[Praxis]

I have a slight case of derealization and tend to be anxious about many thing aka a worry wort. SWIM (really), has some mescaline that SWIM would like to buy. In the past SWIM has tripped a bit and felt SWIM was in control and calm for the most part. But since then I have developed that slight derealization. I was thinking, that since mescaline has been known to make people see things as more real and more beautiful than normal, that it would be ok for SWIM to trip again. Considering SWIM can control themself for the most (if not all) parts of the trip while taking into consideration that SWIM has a slight case of derealization and experience with psychedellic drugs, what are your opinions on taking this drug?