Which medication is recommended for symptom relief in diabetic gastroparesis?

Metoclopramide is recommended for symptom relief in diabetic gastroparesis due to its ability to enhance gastrointestinal motility. It works as a dopamine receptor antagonist in the central nervous system, which increases the frequency of gastric contractions. This action helps to expedite gastric emptying and alleviate symptoms such as nausea and vomiting that often occur in patients with diabetic gastroparesis. Additionally, it promotes better coordination of gastric contractions, leading to improved digestive efficiency.

Using metoclopramide effectively addresses the underlying issues of delayed gastric emptying that characterize diabetic gastroparesis, making it the most appropriate choice among the options provided. Other medications listed do not specifically target the motility issues associated with this condition or are utilized for different therapeutic purposes.