Intravenous glucagon relaxes the lower esophageal sphincter. This may prompt the food to pass in the stomach. The dose is 0.5 to 1-mg once. Patient may experience transient nausea.
Colon V, Grade A, Pulliam G, et al. Effect of doses of glucagon used to treat food impaction on esophageal motor function of normal subjects. Dysphagia 1999; 14:27.