Does lemon help motion sickness?
Lemon: mixed. The studies point both ways. A 2026 study found a lemon oil mask cut bus sickness scores sharply, but it had no separate control group, and a controlled lab test of limonene, a citrus scent compound, found no effect.
By Dizzout Editorial·Evidence last checked 4 October 2026·How we review
Verdict: Mixed
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Key facts
- The claim being tested: Sniffing a cut lemon, sucking a lemon sweet or sipping lemon water is a popular car sickness hack, and it has spread on social media as a travel sickness tip.
- 3 studies are summarised on this page, each with its participant count and finding.
- Of the studies listed, 1 supports it and 1 undercuts it.
- On the remedies hub it sits under things you look at, hear or smell.
- Something with better evidence for the same job: Looking at the horizon.
What it's claimed to do
Sniffing a cut lemon, sucking a lemon sweet or sipping lemon water is a popular car sickness hack, and it has spread on social media as a travel sickness tip.
- YesTested for motion sickness and it held up.
- ProbablyReal trial support, but modest or from a single study.
- Mixedthis remedyTrials disagree: some found an effect, better-designed ones did not.
- UntestedNo one has tested this for motion sickness. It may still be sensible.
- NoTested for motion sickness and it did not beat a placebo.
Levels describe the state of the published research on motion sickness specifically, not on nausea in general, and not how well something worked for any individual. “Untested” means no trial has looked; it is not the same as a remedy having been tested and failed.
What the research actually says
Lemon is one of the few folk remedies with a motion sickness study behind it, and the studies disagree. In a 2026 study, 60 people prone to motion sickness rode the same 30-minute bus route twice, a week apart. On the first ride they wore a standard mask and on the second an aromatherapy mask made with lemon essential oil. Their median symptom score fell from 18 to 6, and nausea, pallor, cold sweating and salivation all dropped. That is a large effect, but the design leaves a lot open. There was no separate control group, and the lemon ride always came second, so getting used to the route could explain part of the drop. A controlled lab study points the other way. Eighteen volunteers were rotated on a tilted axis three times while smelling limonene, a citrus scent compound, or petrol, or plain water. Neither scent changed how sick they got compared with water. A third study, of sickness from a cycling video, found that people who noticed a rose scent reported less sickness than people who did not notice a scent. Put together, a pleasant smell might help a little, the lemon result needs a controlled repeat, and no study has tested drinking lemon water or eating lemon sweets for motion sickness. Research on lemon for nausea in pregnancy exists, but it is a different condition and we have left it out.
The studies, in full
Explore (NY) 22(5):103470 · PMID 42330915
Participants: 60 people prone to motion sickness, the same 30-minute bus ride twice, no separate control group
With a lemon essential oil aromatherapy mask on the second ride, the median Graybiel symptom score fell from 18 to 6 (P < 0.001), with lower nausea, pallor, cold sweating and salivation. The lemon ride always came second. (Zhang, Bao & Feng, 2026)
Read the source →Neuroscience Letters 566:326-30 · PMID 24602977
Participants: 18 participants, each rotated three times
Smelling limonene, a pleasant citrus odor, or petrol during off-vertical-axis rotation did not change motion sickness symptoms compared with distilled water. (Paillard et al., 2014)
Read the source →Experimental Brain Research 233(5):1353-64 · PMID 25633319
Participants: 62 participants watching a 15-minute first-person cycling video
Only about half of those exposed to a scent noticed it. Among those who noticed a rose scent, visually induced motion sickness was less severe than in people who did not notice a scent. This tested rose, not lemon. (Keshavarz, Stelzmann, Paillard & Hecht, 2015)
Read the source →Safety & what to watch for
- Mixed means unproven. A lemon is fine to carry, but do not make it the plan for a trip you dread.
- Follow the bottle's directions for any essential oil, and ask a pharmacist before using one on a child.
- Lemon juice is acidic. If you have reflux or a sensitive stomach, sniffing a cut lemon asks less of you than drinking it.
- If you are pregnant, the research on lemon for pregnancy nausea is a separate question for your doctor or midwife.
If you want to try it
- If you want to try it, the version with a study behind it is the smell: a cut lemon or a piece of peel held near your nose, or a lemon-scented cloth.
- Use it alongside a forward view and slow breathing, which have stronger evidence, not instead of them.
- Lemon water and lemon sweets are untested for motion sickness. They are fine to try in small amounts if they agree with you.
Something with better evidence: Does looking at the horizon help motion sickness. Verdict: yes, and it costs nothing to try.
Frequently asked questions
Does smelling a lemon help car sickness?
Possibly, but the evidence is thin and split. A 2026 study on a bus found a large drop in symptoms with a lemon oil mask, but it had no separate control group. A controlled lab test of limonene, a citrus scent compound, found no effect.
Does lemon water help motion sickness?
No study has tested drinking lemon water for motion sickness. The research on lemon and motion sickness is about its smell.
Is the lemon travel sickness hack real?
It is a real idea with mixed evidence, not a proven fix. Smelling lemon has one encouraging study with no separate control group, and one controlled study of a citrus scent that found nothing.
Is lemon better than peppermint for motion sickness?
Neither has strong evidence. Lemon has two small studies that disagree. Peppermint has been tested mainly as chewing gum, where a pleasant taste seemed to matter more than the plant. Our essential oils verdict covers the rest.
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Sources
When it isn't motion sickness. Severe or lasting dizziness, a spinning sensation at rest, hearing loss, ringing in one ear, double vision, a bad headache, chest pain, fainting, or vomiting you cannot stop are not motion sickness. Seek medical care rather than a travel remedy.
Dizzout is not a medical provider and nothing here is medical advice. These pages summarize published research so you can weigh it: they cannot account for your health, your medicines or your pregnancy. Talk to a doctor or pharmacist before starting any supplement or medication, especially if you take other drugs, are pregnant or breastfeeding, or are buying for a child. Evidence summaries reflect the published literature as of October 2026 and describe findings in groups of people, which cannot predict your individual response. Product and brand names are trademarks of their respective owners; Dizzout is not affiliated with or endorsed by them.