Subject: Acid in the stomach

I'm trying to do an experiment to learn about substitues to acid in the 
stomach.  How dangerous can hydrochloric acid be to run an experiment ?  Is 
this still true even if I diluted it to a very thin solution ?  If you do not 
recommend me to use it, can you recommend another solution that is close in 
pH, so that I can still run my experiments ? Also, if hydrochloric acid is 
okay for an experiment, where can it be bought? Thank you !!

Re: Acid in the stomach