my bp is usually 90/50 even when i'm not on any meds.
Mine has been down to the 80/50 range (on a medication) and at that level I was extremely tired and somewhat nauseous. It wasn't pleasant. The dr took me off that medication. :-)
Don't know how low is too low (unless you pass out of course). My BP occasionally drops into the 90's and I can feel it- a bit tired. I don't even take meds and I'm sure not athletic. Perhaps under medical topics hypotension is mentioned. Nowadays it seems the docs want us to be as low as possible or they'll throw pills at us. Grrr.
yeah am prety tired now its 108/57 puluse 61 hope it dont drop to much while i sleep
in short, when you are symptomatic
My regular blood pressure is 80/40 ... I do not feel tired or dizzy, it doesnt bother me at all