The insomnia is one of the worse
side effects, seems to exacerbate all other
side effects. Are you taking Incivek? If so, it reduces efficacy of Ambien by about 50%. My husband, who is very sensitive to Ambien, and took an occasiona 2.5 mg to sleep, had to up his dosage to 10mg during the INC portion of his treatment (upon doctor's advice, of course) Now he's down to about 5 mg. which works fine.