If you get queasy on cars, boats or planes, the Vietnamese piece you shared lists several traditional fixes. Below is a clear English rewrite of those tips with about 20% more content, plus supporting notes from health authorities and scientific studies so you know what’s proven, what’s traditional, and what to avoid.

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Quick summary — what helps most (short answer)

Simple steps you can try right now: sit where there’s least motion, get fresh air, look at the horizon, nibble plain food or ginger, try acupressure on the P6 point or a wrist band, and use citrus/peppermint aroma for some people. These non-drug measures are recommended by major health bodies and have some supporting evidence. (NHS; Mayo Clinic; CDC). nhs.uk+2Mayo Clinic+2

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1) Smell citrus peels (orange / tangerine / lemon) — a reasonable, low-risk trick

The original article suggests carrying a tangerine peel and sniffing it when you feel queasy. Aromas like lemon or orange can reduce nausea for some people — clinical studies have found inhaling citrus vapour or lemon essential oil can help postoperative or chemotherapy-related nausea, and many travellers report relief. It’s inexpensive, safe and worth trying if the scent soothes you. (Lemon aromatherapy studies; small clinical trials). PMC+1

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2) Bread or plain crackers — small starchy snacks help settle the stomach

Smelling or nibbling plain bread/crackers is a traditional remedy mentioned in the Vietnamese post. Plain, dry carbohydrates can settle the stomach and reduce nausea (they absorb stomach acid and give a mild, easy source of energy). Health sites commonly recommend plain crackers as first-line comfort food for nausea. (Mayo Clinic). Mayo Clinic

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3) Drink or chew ginger — supported by evidence

Ginger (tea, candied ginger, chews or capsules) is one of the most consistently useful non-drug remedies for nausea, including motion sickness. Try a small cup of weak ginger tea or a ginger lozenge about 20–30 minutes before travel. It’s generally safe for most people and is recommended by Mayo Clinic and NHS as a practical option. (Mayo Clinic; NHS). Mayo Clinic+1

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4) Betel leaf (lá trầu) — traditional, limited evidence

The article suggests sniffing or placing crushed betel leaves near the abdomen (over the navel) to warm the area. This is a traditional remedy in some cultures. There is little modern clinical evidence for this specific method; if it’s comforting and causes no skin irritation, it’s low risk — but it should be seen as folk practice rather than a proven therapy. (Traditional practice; no strong clinical trials). Tạp Chí Đời Sống

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5) Choose the best seat and fix your gaze — a very effective behavioural trick

Where you sit matters: in cars, sit in front or next to the driver; on buses/planes, choose a window seat and look forward; on boats, stay on deck and face the horizon. Fixing your eyes on a stable, distant point helps the brain reconcile the mismatch between inner-ear motion signals and visual cues — the core cause of motion sickness. Health authorities recommend this as a primary self-care step. (NHS; CDC). nhs.uk+1

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6) Try acupressure / P6 point (or a wrist band) — evidence supports mild benefit

Pressing the P6 (nèiguān) point on the inner wrist or wearing an acupressure wristband (Sea-Band) can reduce nausea in many people. Cochrane reviews and clinical trials show P6 stimulation helps postoperative and travel-related nausea more than sham controls in some settings. It’s safe, inexpensive and non-pharmacological. (Cochrane/clinical P6 studies). PMC+1

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7) Avoid certain foods and drinks before travel — practical and evidence-based

The Vietnamese article warns against eating lychee/very sweet fruit, raw egg yolk, soy milk, very greasy/large meals, alcohol, durian and gas-filled drinks before travel. The evidence-based part of that advice is to avoid heavy, fatty or very spicy meals and gas-producing drinks before a trip — they commonly worsen nausea and bloating. Also avoid excess alcohol and very sugary drinks, which can make you more uncomfortable. (NHS; CDC). nhs.uk+1

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8) Pressure point massage (wrist and “Hegu”) — how to do it

The article gives step-by-step instructions for pressing the P6 (inner wrist) and Hegu (between thumb and index finger) points. A simple method: place three fingers across the inside of your opposite wrist so your index finger rests on P6, then press for 30–60 seconds. Many people find this reduces nausea quickly; clinical trials support P6 stimulation for short-term relief. (Clinical P6 studies). PMC+1

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Extra, evidence-based tips (added content — the +20% you asked for)

• Fresh air & breathing: Open a window and take slow, deep breaths — oxygen and calmer breathing help for many people. (NHS). nhs.uk

• Hydration & cold sips: Small sips of cold water or a fizzy-free sour drink can help. Avoid large gulps. (Mayo Clinic). Mayo Clinic

• Distract gently: Soft music, an audiobook or light conversation can lessen attention to nausea (recommended for children). (NHS). nhs.uk

• Aromatherapy alternatives: Peppermint and lemon/ orange aromas help some people; trials are mixed but many travellers report benefit. Try a sniff of a citrus peel or a peppermint lozenge. (Lemon/orange aromatherapy trials). PMC+1

• When non-drug measures fail: over-the-counter antihistamines (dimenhydrinate, meclizine) or a prescription scopolamine patch are effective — speak to a pharmacist or doctor about suitability and side effects (drowsiness, dry mouth). These are medications, so consult a clinician if you prefer pill/patch options. (NHS; Patient.info). patient.info+1

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Safety notes and what to avoid

• Don’t insert garlic or other items into your nose (viral social trends are risky) — ENT specialists warn this can irritate and damage the mucosa. (ENT guidance). PMC

• If a child, elderly person or someone with heart/lung conditions is severely vomiting or dehydrated, seek medical help. (CDC/Mayo Clinic). wwwnc.cdc.gov+1

• If you use herbal remedies (ginger, peppermint), check interactions if you’re on anticoagulants or other medicines. (Drug-herb interaction guidance). Mayo Clinic Health System