I just take a Pepcid or a Zantac before eating anything really spicy - all the stuff I really love! Pepcid and Zantac work differently from the Proton Pump Inhibitor meds like Prilosec or Nexium or Aciphex. No worries about not having enough acid to digest what you eat.
If you find a way, please let me know! My husband loves to fix fajitas, but I find the chilli really upsets my stomach and gives me even worse diarrohea,(I have Crohn's) so he has to fix my chicken without chillis. I can still eat the guacamole, tomato and red pepper salsa, and creme fraiche. Bit difficult if you are eating out though. Where did the idea of baking soda/powder idea come from? Will be intrigued to learn.