I've just asked what I hope will be an interesting question to a Scientologist

It's about whether melatonin is considered a psychiatric drug in their
church. The Scientologists are ardently against any psychiatric
medication and I think they're against physical pain relief too. From
what I know of melatonin it's a brain chemical which is made from the
breakdown of serotonin. It is safe and non-addictive as far as I am
aware which is why it's sold over the counter in the US. In the UK it's
only available on prescription but anyone can Google it and find a
seller to get it shipped over. It's 3am and I could do with some now myself.

I've tried to ask the right question. Is it a psychiatric medication or
a nutritional supplement. I think the Scientologists would be ok with
food supplements. I think they'd be ok with vitamin supplements but I
know very little about the religion nor exactly why they don't believe
in psychiatric medication. The example he gave me came from a post about
taurine (the stimulant in Red Bull). He proposed that animals don't
medicate so why should we however I remembered a little about aspirin
which is found in a natural form in Pussy Willow trees. Somewhere I
remember hearing that deer in pain would chew on the bark.