Travel risk
Motion sickness: what actually works
Sensory conflict between vestibular and visual input.
What the evidence supports
Antihistamines and scopolamine both have meta-analytic support; ginger and acupressure bands do not. [1]
Sedation from antihistamines is a real cost if you are the driver.
What we are not claiming
This is general information drawn from the published literature, not advice about your trip or your health. Destination-specific medical requirements — vaccination, prophylaxis, entry rules — change and are properly the business of a travel clinic.
Other travel risks
- Traveller's diarrhoea — The commonest illness affecting travellers, usually bacterial and usually self-limiting.
- Food and water precautions — The "boil it, cook it, peel it, or forget it" heuristic and what it is actually worth.
- Managing allergy and coeliac disease abroad — Communicating a dietary restriction reliably in another language and food culture.
- Jet lag — Circadian misalignment after crossing time zones, worse travelling east.
- Altitude illness — Acute mountain sickness and its severe forms, above roughly 2,500 m.
How do I prevent motion sickness?
Antihistamines and scopolamine both have meta-analytic support; ginger and acupressure bands do not.
What is the main mistake people make?
Sedation from antihistamines is a real cost if you are the driver.
Is this advice the same everywhere?
The physiology is. The local risk is not, and neither are medical requirements — check a travel clinic for your specific destination.
References
Every citation below links to the original peer-reviewed record on PubMed or via DOI. Nothing here is a substitute for medical advice.
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Selected laboratory-based biomarkers for assessing vitamin A deficiency in at-risk individuals Gannon BM, Huey SL, Mehta NH, et al. · The Cochrane database of systematic reviews · 2025 · Meta-analysis DOIPubMed 40433851Full text
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Towards shortening the duration of antibiotic therapy for Lyme borreliosis: a systematic review and meta-analysis Raffetin A, Henningsson AJ, Ornstein K, et al. · Infection · 2025 · Meta-analysis DOIPubMed 40246800
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Social jet lag and mental health outcomes: A systematic review and meta-analysis Gao L, Gao J, Zeng Z · Acta psychologica · 2025 · Meta-analysis DOIPubMed 40818420
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Non-pharmacological interventions designed to support carriers of multi-drug-resistant organisms (MDROs): a systematic literature review Gaube S, Pan M, Rath A, et al. · The Journal of hospital infection · 2025 · Systematic review DOIPubMed 40816599
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Comparative effects of pharmacological interventions for the prevention of acute mountain sickness: A systematic review and Bayesian network meta-analysis Wang J, Lian N, Tang K, et al. · Travel medicine and infectious disease · 2025 · Meta-analysis DOIPubMed 40383249
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Risk of anaphylaxis on commercial flights Turner PJ · Current opinion in allergy and clinical immunology · 2025 · Systematic review DOIPubMed 40643054Full text
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Effect of nitrate supplementation on oxygen saturation levels for acute mountain sickness prevention: A systematic review and meta-analysis Nafi'an MRT, Sabirin RM, Wibowo RA, et al. · Nitric oxide : biology and chemistry · 2024 · Meta-analysis DOIPubMed 39002891
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Orally Ingested Probiotic, Prebiotic, and Synbiotic Interventions as Countermeasures for Gastrointestinal Tract Infections in Nonelderly Adults: A Systematic Review and Meta-Analysis Fagnant HS, Isidean SD, Wilson L, et al. · Advances in nutrition (Bethesda, Md.) · 2023 · Meta-analysis DOIPubMed 36822240Full text
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How Common Are Allergic Reactions During Commercial Flights? A Systematic Review and Meta-Analysis Turner PJ, Mamula J, Laktabi J, et al. · The journal of allergy and clinical immunology. In practice · 2023 · Meta-analysis DOIPubMed 37507067
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Probiotics and rifaximin for the prevention of travelers' diarrhea: A systematic review and network meta-analysis Fan H, Gao L, Yin Z, et al. · Medicine · 2022 · Meta-analysis DOIPubMed 36221413Full text