What are your symptoms. Do you have gastritis or ulcers?
I think if you have gastritis or ulcers the mms may aggravate them.
Of course it would depend on how much you took but you obviously wouldnt want to irritate the stomach lining more and you would need to take enough to reduce the bacteria which could possibly be done over a longer period with lower more diluted doses to avoid this
So if you try it you would need to be very cautious to use an amount that didnt worsen your symptoms
Alternatives to this could be Iodine or Colloidal Silver so you may want to look into these