sedation
"I have been taking phenergan for insomnia and find it works great, I have had trouble sleeping most nights for a few months mostly due to being wired up at bedtime I have random thoughts running through my mind when I lie down which stops me sleeping and then I get anxious about not sleeping which then prolongs the time taken to fall asleep but Phenergan seems to calm my mind because of it's sedative properties. I take a 25-50mg doseage and 30 to 45 mins later I begin to relax and feel drowsy enough to fall asleep, I get a good 6 or 7 hours sleep on them, overall these tablets work for me. Only side effects have been dry mouth and groggy in the morning but those are better than getting no sleep at all."