It’s a hormone. Brains are all differently equipped with those so you shouldn’t expect regularity or predictability unless you have a consistent dosage schedule
What you might get in a supplement, 0.3 mg to 3 mg or so.
It is like the feeling late after an LSD trip maybe 10-12 hours or more after the "usual dose" which would be 80 to 320 mcg.
Sensorium is lit up like a light psychedelic experience, might be weary but complete unable to shut down. In my image of myself in my mind's eye I am glowing with corona discharge.