Can pantoprazole 40 mg twice a day cause shortness of breath?

Dyspnea is a very rare side effect which affects 0.01% of people taking this PPI and requires medical attention asap.

Pantoprazole side effects
Get emergency medical help if you have signs of an allergic reaction to pantoprazole: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Source: https://www.drugs.com/pantoprazole.html