What was measured
REM sleep
One ingredient has been read against REM sleep in this library.
This page is not a ranking. Ingredients are listed by name, in alphabetical order.
Still to read against REM sleep
Every ingredient on our to-read list for REM sleep — one of them — has been read against it.
Of the 58 ingredients in this library, one has been read against REM sleep, from one source. It rests on a single source, with nothing yet to check it against.
An ingredient that is not named above is not a gap: nobody set out to read it against REM sleep, and this library holds no record of having looked and found nothing.
The one ingredient read against REM sleep
The numbers behind these lines are not on one scale. The findings here were reported in one unit. Each source read a different group of people, over a different stretch of time, in the units it chose.
- Caffeine and REM sleepOne source, found no clear difference
Read next
The other 10 things measured under Sleep
All 136 things measured in this library
This is a library, not advice. No recommendation, no dose, no diagnosis, no ranking. We never ask about your symptoms, and nothing here is tailored to you.