I am very interested in sleep quality. At one time in my life I had sleep apnea. When I finally got a good night’s sleep with a CPAP machine I was totally amazed at the difference it made.
That was a long time ago but the lesson was learnt and I very much try to have good sleep quality. However I am a bit of a worrier and that can keep me awake.
I’ve experimented with a lot of different approaches. My usual sleep stack includes valerian, magnesium and glycine and 1.5-3 mg of Melatonin (not every night as it seems to fall in effectiveness so I cycle it).
I have taken GABA before bedtime from time to time and found it helps me with the 4 am awakening without morning sluggishness.
However I just looked on Amazon UK and it seems to be unavailable. The UK authorities seem to have periods where they clamp down on various substances, e.g. melatonin, GABA, DHEA, which makes it more difficult to get hold of them.
This book came up in my search:
GABA and Sleep: Molecular, Functional and Clinical Aspects Hardcover – Illustrated, 30 Sept. 2010
by Jaime M. Monti (Editor).
Unfortunately its £135, and the Kindle edition is even more expensive! It’s also old, but the contents look interesting.
I can hunt down these products but I am always slightly wary about purchasing from India and suchlike, plus the time to arrive and the guessing game as it if it will be held up or charged in customs is…not appreciated by me.