Management of Anxiety in Gastroparesis Patients

Introduction to Anxiety Treatment

The American Gastroenterological Association recommends gabapentin as an anticonvulsant for visceral pain management in gastroparesis patients, not for anxiety treatment 1, 2, 3

Selective serotonin reuptake inhibitors (SSRIs) are the appropriate choice for anxiety in gastroparesis patients, as they may improve coexisting anxiety and depression 2
Duloxetine (60-120 mg/day) is an SNRI that blocks reuptake of both serotonin and norepinephrine, addressing both anxiety and visceral pain 1, 2, 4
Tricyclic antidepressants, such as amitriptyline (25-100 mg/day) or nortriptyline (25-100 mg/day), reduce visceral pain perception and may help with anxiety through noradrenaline reuptake inhibition 1, 2, 4
Mirtazapine (7.5-30 mg/day) is a tetracyclic antidepressant that improved refractory nausea and vomiting in gastroparesis patients and has anxiolytic properties 1, 5

Gabapentin (>1200 mg/day divided) is effective for neuropathic pain reduction in gastroparesis patients, achieving >50% pain reduction compared to placebo in systematic reviews 1, 2

Opioids and GLP-1 agonists should be avoided as they significantly exacerbate gastroparesis symptoms 4
Antiemetics, such as ondansetron (4-8 mg bid-tid) or granisetron (1 mg bid or 34.3 mg patch weekly), may reduce GI-specific anxiety by addressing gastroparesis symptoms directly 4, 5

The American Gastroenterological Association recommends amitriptyline as an adjunctive agent for pain and nausea in gastroparesis, to be considered after standard therapy has been initiated 6

Dietary modification with a small particle size, low-fat diet for a minimum of 4 weeks should be attempted first, followed by metoclopramide 10 mg three times daily before meals and at bedtime as first-line pharmacotherapy, and then 5-HT3 antagonists as second-line antiemetics, with amitriptyline serving as an adjunct when visceral pain, anxiety, or refractory nausea persist despite standard therapy 6

Patients should receive metoclopramide 10 mg three times daily before meals and at bedtime as first-line pharmacotherapy, with amitriptyline considered as an adjunct for pain and nausea management in gastroparesis 6