Seriously, there is not enough hydroxide there to cause damage. This is a doubly diluted solution.
That is a matter of opinion. Would you ingest a spoonful of Drano in a gallon of water since this is also a hydroxide?
And anything that neutralizes the stomach acid, which includes the hydroxide and the baking soda, is going to lead to problems. The stomach acid is there for a reason and provides numerous benefits.
Again if someone really wants to reduce acidity all they really have to do is deep breathe. If they want more help then try eating more vegetables. At least these are not caustic and they will not screw with the stomach acid.