“…As there have not been any prospective studies addressing the treatment of HE, its management approach is yet to be validated. Pharmacotherapy including calcium channel blockers, nitrates, phosphodiesterase-5 inhibitors, anticholinergics, and low dose antidepressants is effective in a subset of patients with HE, but lacks longterm follow-ups to assess the efficacy of these drugs [14,15]. Interventional procedures such as botulinum toxin injection, pneumatic dilation and per-oral endoscopic myotomy (POEM) show favorable results when patients are refractory to medications [5,16,17].…”