What is actually keeping you up?
Pick the one that sounds most like your bad nights.
How do you want to take it?
There is no wrong answer. Some people hate swallowing things.
What matters most on the label?
This is the one that changes the answer the most.
What time do you want to be asleep?
I will work backwards from this and build the actual timings.
Your best fit
My honest caveat
Your evening, backwards from lights out
A free tool from Jen Tried It. I tested every product in here myself.