Overnight long haul

[saz2022]

Hi all
I've got a long haul overnight plane trip coming up.
Whatever travel pillow I buy I still can't get to sleep! This impacts a blood disorder I have. I remember nearly fainting once after a long haul overnight flight.
Any advice - even medication - I would be so grateful for.
TIA

I’ve tried reading and watching films. This time I’m going to use noise cancelling headphones and listen to a book.