A 23-year-old man with a long history of duodenal ulcer has been treated with cimetidine (Tagamet) for 6 months.

[Joyce]

#march2020usmle2ck

A 23-year-old man with a long history of duodenal ulcer has been treated with cimetidine (Tagamet) for 6 months.

What is the mechanism of action of this drug?

A-Adds a protective membrane to gastric mucosa
B-Blocks H2 receptors
C-Stimulates H2 receptors
D-Inhibits H+,K+-ATPase

 

[Tiffany Wong]

D-Inhibits H+,K+-ATPase