"i have never had a problem with going to sleep at night, but i bought some sominex at the airport the other day in order to help me sleep in a 9 hour flight, and now for the past few days i have had severe insomnia. nothing else my routine has changed, but now i am up all through the night, tired all day, and still can&#039;t sleep at night. i regret making the mistake of using this product."