Depending on what’s going on, have your iron levels checked as well. I was tired all of the time and two doctors diagnosed sleep apnea and put me on a cpap. Didn’t help. I had to take hour long naps every day.

A friend of my wife suggested a doctor and he said that even though my iron levels were in the normal range, people with restless leg syndrome (which I’ve had my whole life) often have sleep issues and benefit from iron supplements.

Within days of starting taking them my tiredness went away. I went from being tired every day for nearly two years to maybe taking a handful of naps for fun in the last three years. Really life changing.

My PCP didn’t understand why I’d be taking iron, but accepts that it works. My sleep charts still aren’t great. Little to no deep sleep, but CPAP didn’t help with that either.