Is it okay to take prazosin low dosage with a dollar tree sleeping pill that has no pain killers in it?

Usually: Prazosin can be used for PTSD nightmares, or blood pressure. Sleeping meds can sometimes cause "orthostatic hypotension" - a drop in blood pressure when standing up e.g. often getting out of bed in the AM, getting up from a bath. This can lead to a double drop in BP so you should be careful if lightheaded, to avoid a fall and head injury.

Dollar tree sleeping: Pill & prazosin? The shortest & best answer about what is safe to take w prescribed medication will always be: ask your prescriber. In searching for "dollar tree" sleep aid -- it appears they offer several -- some containing diphenhydramine & others with natural products like valerian & melatonin. Check the active ingredient list on the bottle and ring your MD to ask if it's ok 2 take w prazosin.