Drug updated on 4/27/2026
| Dosage Form | Capsules (oral; 85 mg) |
| Drug Class | Substance P/neurokinin-1 (NK-1) receptor antagonist |
| Ongoing and Completed Studies | ClinicalTrials.gov |
Indication
- Indicated for the prevention of vomiting induced by motion in adults.
Latest News

Summary
- This summary is based on the review of four randomized controlled trial(s). [1-4]
- In adults with idiopathic and diabetic gastroparesis (n = 201), tradipitant did not reduce average nausea severity at week 12 in the ITT population (P = 0.741); significant improvement in nausea severity was reported in subjects with high blood levels of tradipitant.
- In adults with a history of motion sickness during boat trips under variable sea conditions (n = 365), vomiting occurred in 18.3% with 170 mg tradipitant and 19.5% with 85 mg tradipitant versus 44.3% with placebo (p < 0.0001 for both dosages); severe nausea and vomiting occurred in 18.03% with tradipitant versus 37.70% with placebo (p < 0.0001).
- In healthy volunteers (n = 24), tradipitant 85 mg b.i.d. for 9 days did not significantly affect gastric emptying, gastric volumes, satiation, or postprandial symptoms compared with placebo.
- In adults with idiopathic and diabetic gastroparesis (n = 201), healthy participants without antiemetic treatment (n = 63), healthy volunteers assessed for gastric motor functions (n = 24), and adults with a history of motion sickness (n = 365), no specific safety outcomes or adverse effects were reported or assessed; the motion sickness scale validation study focused on scale validation rather than drug safety.
- There is no population types or subgroups information available in the reviewed studies.
Product Monograph / Prescribing Information
| Document Title | Year | Source |
|---|---|---|
| Nereus (tradipitant) Prescribing Information | 2025 | Vanda Pharmaceuticals Inc., Washington, D.C. |
Randomized Controlled Trials
| Document Title | Sex Distribution | Year | Source |
|---|---|---|---|
| Motion Syros: tradipitant effective in the treatment of motion sickness; a multicenter, randomized, double-blind, placebo-controlled study | 366Subjects F: 67% M: 33% | 2025 | Frontiers in Neurology |
| The Efficacy of Tradipitant in Patients With Diabetic and Idiopathic Gastroparesis in a Phase 3 Randomized Placebo-Controlled Clinical Trial | 201Subjects F: 80% M: 20% | 2024 | Clinical Gastroenterology and Hepatology |
| Validation of the motion sickness severity scale: Secondary analysis of a randomized, double-blind, placebo-controlled study of a treatment for motion sickness | 126Subjects F: 77% M: 23% | 2023 | PLOS One |
| Clinical trial: a single-centre, randomised, controlled trial of tradipitant on satiation, gastric functions, and serum drug levels in healthy volunteers | 27Subjects F: 48% M: 52% | 2022 | Alimentary Pharmacology & Therapeutics |
Sex Distribution:
F:67%
M:33%
366Subjects
Year:
2025
Source:Frontiers in Neurology
Sex Distribution:
F:80%
M:20%
201Subjects
Year:
2024
Source:Clinical Gastroenterology and Hepatology
Sex Distribution:
F:77%
M:23%
126Subjects
Year:
2023
Source:PLOS One
Sex Distribution:
F:48%
M:52%
27Subjects
Year:
2022
Source:Alimentary Pharmacology & Therapeutics

