A nurse is teaching a client who is obese about orlistat. The nurse should instruct the client to report which of the following findings as an adverse effect of the medication?

Choice A reason: Dark-colored stools are an adverse effect of orlistat, a medication that blocks the absorption of fat in the intestines. The unabsorbed fat can cause the stools to become oily, foul-smelling, and dark in color. This can indicate a serious condition called steatorrhea, which can lead to malnutrition and vitamin deficiencies.

Choice B reason: Constipation is not an adverse effect of orlistat. In fact, orlistat can cause the opposite problem of diarrhea, especially if the client consumes too much fat in their diet. Constipation may be caused by other factors, such as dehydration, lack of fiber, or medication side effects.

Choice C reason: Nausea is not an adverse effect of orlistat. Nausea may be a symptom of other conditions, such as gastritis, gastroenteritis, or pregnancy. Nausea may also be caused by other medications, such as antibiotics, opioids, or chemotherapy drugs.

Choice D reason: Abdominal pain is not an adverse effect of orlistat. Abdominal pain may be a sign of other conditions, such as appendicitis, gallstones, or kidney stones. Abdominal pain may also be caused by other medications, such as NSAIDs, steroids, or oral contraceptives.

Choice A reason: This is not a correct statement because these medications do not coat the ulcer. They are not antacids or mucosal protectants, which can form a protective layer over the ulcer and neutralize the stomach acid.

Choice B reason: This is not a correct statement because these medications do not stop the acid production. They only reduce it by inhibiting the proton pump, which is responsible for secreting acid into the stomach.

Choice C reason: This is not a correct statement because these medications should be taken as prescribed, not as needed. They are not analgesics or anti-inflammatory drugs, which can relieve the pain and inflammation of the ulcer.

Choice D reason: This is a correct statement because these medications have two effects: they kill the bacteria that cause the infection and inflammation of the ulcer, and they reduce the acid production that aggravates the ulcer. This can help heal the ulcer and prevent complications.