My psychiatrist prescribed propranolol for anxiety, as well to attenuate the various stress reactions I'm experiencing from being my wife's caregiver. It's widely used off label in that manner. Yes, it helps with the ongoing stress, it lowers BP, but if I take it at night, it worsens my already mediocre/poor sleep. On Reddit, on the r/cptsd sub, many who post state that propanolol alone, or along with some other psych drug, has allowed people to function.
My primary is smart but it's my psychiatrist who's keeping me from sinking. I long ago abandoned the pursuit of 'perfect' in regards to medications. For sleep and C-PTSD, been through prazosin, doxazosin, clonidine, guanfacine over the past few years. Seems that I'm stuck with clonazepam. Though it and propranolol can or do impact sexual function, most nights, between 9 and 10, I still get my daily erection thanks to testosterone.