Melatonin raises my BP.
I was taking melatonin and noticed that after a few days of taking it I was really sad. So I stopped for a bit, then tried again. Same thing. I can use the lotion containing it but not ingest it.
I can’t stand the morning brain fog of even 1/10 a 3g melatonin pill (300mg). However, 8g of pistachios before bed, providing only about .64mg, helps with no side effects. I think melatonin sensitivity varies.