insomnia
"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't sleep at night. I regret making the mistake of using this product."