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?
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.
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.
Chamgap Semantic Classification Code
Permanent code issued
M.isopropyl-alcohol-pad.inhaled.acute-nausea.reduce.saline-odorMedicinal interventions > Brief inhalation from a 70% isopropyl-alcohol pad held near the nose > Inhaled > Rapid relief of acute nausea in adults in the emergency department > Reduction claim > Saline-odor control
Codex retrospectively verified the principal intervention, delivery, population, endpoint, and comparator from the existing reviewed verdict and issued a permanent semantic code. Secondary outcomes on the page are not transferred as separate claims. The code identifies the intervention and claim; it never contains the evidence grade, score, or safety result.
Exact Claim Classification
These independent facets prevent evidence from different forms, routes, populations, effects, and comparators from being mixed.
| Intervention class | M · Medicine |
|---|---|
| Canonical ingredient or intervention | Brief inhalation from a 70% isopropyl-alcohol pad held near the nose |
| Source or part used | Medicinal or medical-grade preparation specified in the verdict; unreported manufacturing details remain unverified |
| Formulation or processing | Brief inhalation from a 70% isopropyl-alcohol pad held near the nose |
| Route | Inhaled |
| Dose | Brief inhalation from a 70% isopropyl-alcohol pad held near the nose |
| Duration | 10-minute principal endpoint |
| Population | 84 recruited and 80 completed, 37 alcohol and 43 saline |
| Effect or condition | Rapid relief of acute nausea in adults in the emergency department |
| Primary endpoint | Ten-minute nausea NRS, satisfaction, and rescue antiemetic |
| Comparator | Saline-odor control |
| Duplicate-detection key | isopropyl-alcohol-pad|inhaled|84 recruited and 80 completed, 37 alcohol and 43 saline|acute-nausea|10-minute principal endpoint |
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
| Endpoint | P | Symptom or function itself is the target - including patient reports and performance tests |
| 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 |
Stored derived and displayed grades match; this is not a current recalculation or validity check (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
Evidence Table
| Study | Design | Sample | Funding | Endpoint | Result | Weight |
|---|---|---|---|---|---|---|
| Beadle KL et al. 2016 | Randomized alcohol-versus-saline odor trial | 84 recruited and 80 completed, 37 alcohol and 43 saline | 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 |
| Candemir H et al. 2021 | Prospective randomized placebo-controlled trial | 118 in ITT and 115 completed | 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 |
| April MD et al. 2023 | Systematic review and meta-analysis | Two saline-controlled RCTs and 195 participants | 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).
Final verification and publication gate: Codex · Evidence date: 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.