Answer:
Proteins.
Step-by-step explanation:
Digestion may be defined as the process of breakdown of large food molecules into the simpler substances. The presence of HCl in stomach plays important role in protein digestion.
Mathhew drugs inhibit the production of HCl in stomach that can cause the ease of symptoms of gastric ulcer. The long time ingestion of this drug inhibits the production of HCl that affects the digestion of proteins in the body.
Thus, the answer is protein.