Psychedelic here means a classic psychedelic, such as LSD, psilocybin, DMT (including in ayahuasca), mescaline. This excludes MDMA and ketamine. 2C-B is also excluded as its action is not primarily as a 5HT-2A agonist. Other rarer psychedelics I will judge subjectively based on primary mechanism of action.

I mean someone who is an MP at time of market making, or is an MP at some point between now and market close. I do not mean someone who has been an MP in the past but is no longer.

They can have used the drug at any point in their life, including childhood and their current term.

The use must be intentional.

I will judge based on my subjective view of what counts as reliable evidence.