I was hospitalized last month for severe - level 9 chest pain. It felt like GERD tthat I have had most of my life but did not respond to Pepcid, Gaviscon, or Prilosec- but did respond to viscous lidocaine, Endoscopy was negative. It did respond to 500mg of quercetin twice a day and to oral cromolyn- a prescription med distributed as ampules I took 6-10 ampules and got total relieve. Now 6 weeks after my first chest pain, teh pain is less and I am on 2 ampules of cromolyn and one 500 mg quercetin.