My Husband was very depressed at one time and the doctor wanted to put him on Prozac. Instead he asked to have a physical done because he knew that his sleeping all the time and being crabby wasn’t natural. He had blood work done and found he had a thyroid problem. Now after a year of adjusting his meds he is no longer depressed and sleeps like a normal person.
I know this has nothing to do with a natural form but sometimes it’s something else besides depression.