text: Botulinum toxin, calcium channel blockers and nitrates are the most commonly used medical therapies for<unk> .  However, they are not very effective and used only when pneumatic dilation and surgical procedures cannot be performed in high risk patients.
option_0: Achalasia medical therapy
option_1: Barrett's esophagus medical therapy
option_2: Esophageal stricture medical therapy
option_3: Diffuse esophageal spasm surgery
option_4: Eosinophilic esophagitis medical therapy
option_5: Dysphagia medical therapy
option_6: Esophageal cancer medical therapy
option_7: Mallory-Weiss syndrome medical therapy