"i have been taking ambien cr for about 3 years for insomnia and shift worker sleep disorder. my doctor recommended to try belsomra 10mg. this medication did not work at all for me. i slept less than 2 hrs after taking it. i did not experience any side effects or feelings of sleepiness. the co-pay for this medication is $45 a month which is ridiculous. i will stick with the ambien for now."