Verdict No. 3012 · Search date 2026-09-07 · Methodology v0.9
Brief inhalation from a 70% isopropyl-alcohol pad held near the nose,
does it really help with Rapid relief of acute nausea in adults in the emergency department?
30-Second Summary
C
Evidence Grade C · 54 · Safety caution
Isopropyl-alcohol pad inhalation can relieve nausea briefly but does not replace treatment of vomiting or its underlying cause
Do not swallow the liquid, put it inside the nose, or inhale continuously in an enclosed space. Stop for dizziness, headache, cough, or airway irritation. Persistent vomiting, blood in vomit, severe abdominal or chest pain, dehydration, altered consciousness, or severe symptoms in pregnancy requires prompt medical care.
What the
research showsGrade C with 54 points. In a prospectively registered 80-person trial, ten-minute median nausea was 3 with alcohol and 6 with saline, a 3-point difference (95% CI 2-4). A separate 118-person trial was supportive, but its funding and prespecification were unverified and an externally validated minimum important difference could not be confirmed.
research showsGrade C with 54 points. In a prospectively registered 80-person trial, ten-minute median nausea was 3 with alcohol and 6 with saline, a 3-point difference (95% CI 2-4). A separate 118-person trial was supportive, but its funding and prespecification were unverified and an externally validated minimum important difference could not be confirmed.
What the
ads claimThe statement that smelling alcohol treats vomiting extends a ten-minute nausea-score effect to vomiting, cause treatment, and long-term benefit.
ads claimThe statement that smelling alcohol treats vomiting extends a ten-minute nausea-score effect to vomiting, cause treatment, and long-term benefit.
Useful facts when choosing a product
- Evidence covers short symptom relief over about ten minutes.
- The pad was not put inside the nose and liquid was not swallowed.
- Rescue-antiemetic findings were not identical across trials.
Gap Measurement · Verdict 3012 · C 54
What the research actually shows
Adults in emergency departments briefly inhaled from a 70% isopropyl-alcohol pad held close below the nose versus a saline-odor control. This was not ingestion or broad skin application.
Why this is classified as C (54)
A prospectively registered direct trial and independent supportive study are strengths. Unverified funding and prespecification in the independent trial, plus a key under-200-person ten-minute subjective endpoint, give C with 54 points.
Counterpoint. Vomiting was assessed in only one supporting study and was null; reduced diagnostic, fluid, or underlying-disease treatment was not shown.
Rejudgment record. Cross-check applied — Separated ten-minute nausea ratings from vomiting and rescue medication and weighted the fully verified registered trial separately from the less fully verified independent trial
Scoring profile behind this grade
| Endpoint | P | Patient-reported treatment goal - the symptom is the goal |
| Replication | R1 | Single confirmatory trial |
| Independence | I2 | Decisive evidence is publicly or non-profit funded |
| Effect size | E+ | Meets the clinically important threshold |
| Precision | CX | No pooled confidence interval could be confirmed |
The scoring table and the verdict agree (C).
Sub-claim grades by effect
This ingredient is marketed for several effects. A single overall grade blends strong and weak claims together, so each effect is graded separately here. The overall grade reflects the strongest disconfirming or core claim.
| Effect (sub-claim) | Grade | Basis |
|---|---|---|
| Relief of acute nausea within ten minutes | C | The registered trial was positive, but the endpoint was subjective, ultra-short, and under 200 participants. |
| Treatment of vomiting or the underlying cause | D | Vomiting was sparsely assessed and null; underlying disease was not treated. |
Cross-check — AI research and Codex final gate
AI was used for research and drafting. Blind grading, adversarial audit, and the methodology boundary rules were then reapplied before Codex performed the final evidence, grade, copy, and build checks. If a grade cannot be narrowed, both evidence positions and their reasons are published.
Evidence Table
| Study | Design | Sample | Funding | Endpoint | Result | Weight |
|---|---|---|---|---|---|---|
| Study 1 | Randomized alcohol-versus-saline odor trial | 43 | U.S. military institutional study; no manufacturer sponsorship | Ten-minute nausea NRS, satisfaction, and rescue antiemetic | Median 3 versus 6, difference 3 (95% CI 2-4); satisfaction +2; rescue use null | Key direct trial |
| Study 2 | Prospective randomized placebo-controlled trial | 115 | No conflicts declared; specific funding unverified | Nausea NRS at 2, 4, and 10 minutes and rescue treatment | Overall between-group effect from two minutes, P=.008; less rescue treatment | Independent replication |
| Study 3 | Systematic review and meta-analysis | 195 | Academic research with no manufacturer involvement reported | Ten-minute nausea, vomiting, rescue medication, and adverse events | MD -2.18/10 (95% CI -2.76 to -1.60), MCID 1.5; moderate certainty | Quantitative synthesis |
Receipt — 3 References
All 3 cited sources were verified for existence at the original page (as of 2026-09-07).
Beadle KL, Helbling AR, Love SL, et al. Isopropyl Alcohol Nasal Inhalation for Nausea in the Emergency Department: A Randomized Controlled Trial. Ann Emerg Med. 2016;68:1-9.e1. PMID: 26679977. DOI: 10.1016/j.annemergmed.2015.09.031. NCT02092441.
checkedCandemir H, Akoglu H, Sanri E, Onur O, Denizbasi A. Isopropyl alcohol nasal inhalation for nausea in the triage of an adult emergency department. Am J Emerg Med. 2021;41:9-13. PMID: 33373914. DOI: 10.1016/j.ajem.2020.12.052.
checkedApril MD, et al. Inhaled isopropyl alcohol for treatment of nausea and vomiting in adults: a systematic review and meta-analysis. Emerg Med J. 2023. PMID: 37076258. DOI: 10.1136/emermed-2022-212871. CRD42022299815.
checkedResearch and draft: AI used · Cross-check: blind grading and adversarial audit
Final verification and publication gate: Codex · Verification cutoff: 2026-09-07 · Corrections: none
Final verification and publication gate: Codex · Verification cutoff: 2026-09-07 · Corrections: none
Cite this verdict
[Chamgap] Isopropyl-Alcohol Pad Inhalation for Acute ED Nausea—Ten-Minute Symptoms Improve, but Vomiting and Cause Treatment Are Separate — Evidence Grade C·54. 3 cited sources checked. Source: https://chamgap.com/en/verdicts/gut/isopropyl-alcohol-pad-inhalation-emergency-department-nausea/ · CC BY 4.0CC BY 4.0 — free to use with attribution; do not distort grades, numbers, or verdict meaning.
What this document does and does not do
Chamgap is an information source. It reports what research has and has not confirmed; it does not tell readers what to take or buy. That decision belongs to readers and, when needed, medical or legal professionals. This verdict reflects literature available up to the search date and may change as new research appears. Nothing here is medical advice.