In this study, they used an ethanol extract of black pepper (the equivalent of 21g of pepper per day for a 70kg person) and looked at its protective effects against MSG toxicity. They found at that dose (which would be one really powerful peppersteak), there was
 
“significantly reduced level of lipid peroxides in serum, liver and kidney, serum AST activity, serum levels of triacylglycerol and total cholesterol. Though, there was an increase in the level of GSH in tissues it was not significant. However, the treatment failed to reduce the levels of ALT and urea.”
 
So, in other words, it did not provide complete protection but pretty good. So if you are making a pepper steak for example, you have to use a lot of beer with it. My cousin has an amazing beer steak recipe which I would share with you, except that he won’t share it with me, but it looks like he just puts a ton of pepper on there and pours a lot of beer on the steak as it cooks. If your vegetarian its much more likely that you will have MSG toxicity anyways so for vegetarians you could make a beer eggplant or something.
 
Indian J Exp Biol. 2009 Mar;47(3):186-92.