You should be fine taking the 5 mg tab of ambien. As you might know ambien is commonly Rxd at a strength of 10mg but obviously up to your doctor to decide the strength of dose of ambien for you.
Many people swear by ambien for sleep but other troubled sleepers
Report that they do not care for ambien as a sleep aid.
A few folks report that it just "does not have any effect on me or my sleep." IDK but I think the problem here often is the genertic ambien being used by OP is inefficacious to affect OP. In the days before Ambien went genetic and off patent protevtion I nrvrr temember any complaints about ambien not affecting a certain person or rasily being about sleep.
Most folks who seriously try ambien like ambien fornsleep.