Suvorexant
"I've had insomnia for twenty years. I've tried everything and only Ambien works for me. Knowing this, my doctor suddenly wants to to try Belsomra and gave me all the free samples- 5, 10, 20 mg. they all give me nightmares. Not just standard nightmares- like the worst possible nightmares, vivid and frightening nightmares for hours straight. Then I would wake multiple times and be wide awake. I threw all those pills in the trash. I would not recommend Belsomra to anyone for insomnia. It's a total marketing scam. And here's the kicker- the company knows that this medication causes nightmares and doesn't list it as a side effect. Sad."