Hi, Welcome to Health care magic forum.
As you describe, you started getting the short ness of breath,after starting the pre workout suppliment.
It appears that you have developed the intolarance to the product, and had gastritis
, and osophagitis.
I advise you to stop the product completely and to consult a gastroenterologist
I usually prescribe to my patient with such symptoms omeprazole
, and antacid
Avoid taking spices, junk foods, and oily foods.
Wishing for a quick and complete recovery. Thank you.