I take it if i go past 5 days of no sleep ... Or my Fibro pain is making me suicidal.

It knocks me flat out , the next day I have med hang over.

Since I only take it prn like 1-2 only a month. I won't build up a tolerance .

I use to also take Haldol . Was a huge help ! Well studied medication. Make sure your doctor gives you cogentin along with it in case you get the restless nonsense.