I need a kind of sanity check. I just tried my new beer for the first time since kegging and carbing it, and I had the feeling like my fingers were tingling. My first thought that maybe there was some Oxiclean residue in there causing it, though I washed the keg out something like three or four times with water before I eventually filled it up with StellarSan solution and pumped that out the beer line via CO2, so logically speaking, even if there was still some residue left in there, it should be so watered down that it shouldn't have any effects. Plus, Oxiclean Free is just two ingredients, which happen to be the same main ingredients in PBW, which I never washed as much and never had any issues. My girlfriend also tasted the beer and drank more of it than I did and said it tasted great and she didn't have any of the tingling I mentioned, so I'm probably just worrying about nothing. Plus, if the tingling was caused by something in the beer, that's not a symptom I saw online (usually being stuff like nausea, of which I had none).
The tingling is long gone, but I do wonder about this kind of stuff and am still not fully relieved, despite my girlfriend drinking about 5 times more than I did and saying she's fine (if you're wondering, I didn't use Oxiclean until this batch, though I've used PBW on equipment for hundreds of gallons of beer). Lets say someone didn't wash their keg with water 4 times like I did. Let's say they just dumped the Oxiclean out and didn't rinse it with water but did rinse it with StarSan/StellarSan solution, then drank a beer out of it. Would that then be dangerous? In particular I wonder because I have to imagine there are tons of homebrewers out there who wash with PBW and rinse way less than me.