Can marijuana withdrawal include constant sleepiness?

Answer 1

Marijuana is not physically addictive, so, there are no withdrawal symptoms. It can be psychologically addictive -- regular users can build up a tolerance to it. They become so accustomed to being on the drug, that they actually feel normal when they are on it, and they feel distinctly abnormal if they stop. They feel as though something is missing from their brain.

Regular marijuana users who suddenly quit may feel anxious, irritable, and restless. I have never heard of anyone feeling sleepy after quitting marijuana.