Cinnarizine vs Hyoscine Hydrobromide: What Actually Differs?
Short answer: the UK's two main travel sickness actives come from different drug families. Cinnarizine (the ingredient in Stugeron) is a sedating antihistamine: taken about 2 hours before travel, up to 4 hours to full effect, redosed every 8 hours on long journeys per its label. Hyoscine hydrobromide (Kwells, Joy-Rides, and the Scopoderm patch) is an anticholinergic: tablets work in about 20 to 30 minutes and the label allows a dose at the onset of nausea. Their caution lists differ too, glaucoma rules out hyoscine while Parkinson's disease and porphyria weigh against cinnarizine. Which fits you is a pharmacist decision. A third path exists: Dizzout is a drug-free app using calibrated sound through any headphones, with most users feeling better in about 90 seconds. Reviewed September 2026; read the pack you are holding.
These are the two chemistry lessons behind the whole UK travel sickness aisle. Nearly every branded tablet at the chemist, Kwells, Joy-Rides, Stugeron, and the own-label boxes beside them, contains one of these two actives, so comparing them is really comparing the shelf itself.
The two drugs take different routes to the same inner-ear circuit, run on different clocks, and disqualify different people. This page sets out those label-level differences plainly, then covers the drug-free option for travelers who want neither.
There is a drug-free option in this comparison too. Dizzout works through precisely calibrated sound on any headphones, free to try on iOS and Android.
Free to try, no card needed. Or go straight to the App Store or Google Play.
Cinnarizine vs hyoscine hydrobromide vs Dizzout, side by side
| Feature | Cinnarizine | Hyoscine hydrobromide | Dizzout |
|---|---|---|---|
| Drug family | Sedating antihistamine | Anticholinergic (antimuscarinic) | Not a drug; calibrated sound |
| UK brands | Stugeron 15 | Kwells, Kwells Kids, Joy-Rides; Scopoderm patch | Dizzout app |
| Label timing | 2 hours before travel | Up to 30 min before, or at onset of nausea | Before travel or after symptoms start |
| Onset | Up to ~4 hours to full effect (NHS) | About 20 to 30 minutes (NHS) | Most feel better in ~90 sec |
| Repeat rhythm | Every 8 hours during a journey (label) | Spaced repeats through the day (label) | Reuse any time |
| Youngest labeled age | 5, at half amounts | 3 (Joy-Rides bands), 4 (Kwells Kids) | No pill ages; it is an audio app |
| Key disqualifiers | Parkinson's, porphyria; pregnancy not advised | Glaucoma, prostate and bowel conditions | None of these apply; it is audio |
| US availability | Not FDA-approved, not sold | Rx patch only (Transderm Scop) | iOS + Android, any headphones |
| Price | Per pack at the pharmacy | Per pack at the pharmacy | Free to try (3 sessions), then $7.99/mo or $49.99/yr |
Two families, one target
Motion sickness is the brain mis-reading a conflict between the inner ear and the eyes, and both actives interrupt that circuit at different relays. Hyoscine hydrobromide is an anticholinergic (antimuscarinic): it blocks acetylcholine, which the Kwells product information describes as cutting off stimuli to the vestibular apparatus and acting directly on the vomiting centre. Cinnarizine is a sedating first-generation antihistamine with calcium-channel-blocking activity: it damps the histamine side of the same signalling, and its inner-ear blood flow effect is why the ingredient is separately used for vertigo.
Brand-wise the split is clean. Hyoscine is Kwells (300 micrograms), Kwells Kids and Joy-Rides (150 micrograms each), plus the prescription-strength Scopoderm patch form. Cinnarizine is Stugeron 15 and pharmacy generics. Neither ingredient is a US shelf product: cinnarizine was never FDA-approved, and in the US hyoscine (scopolamine) means the prescription-only patch.
The clock, the ages and the disqualifiers
Hyoscine tablets are the sprinters: about 20 to 30 minutes to onset per the NHS, label timing of up to 30 minutes before the journey, and uniquely, a labeled option to dose at the onset of nausea. Cinnarizine is the distance runner: 2 hours before travel, up to about 4 hours to full effect, and 8-hourly repeats en route, which suits crossings and long drives planned in advance.
Ages and cautions split just as cleanly. Hyoscine's children's products ladder young: Joy-Rides carries dose bands from age 3 and Kwells Kids from 4, while cinnarizine starts at 5 at half amounts and 12 in full. On the disqualifier side, glaucoma, prostatic enlargement and myasthenia gravis rule out hyoscine per the Kwells label; cinnarizine's label flags Parkinson's disease, porphyria and pregnancy, and long-term use in older adults is linked with movement disorders. Both sedate, both labels warn about driving and alcohol. A pharmacist can map this grid onto your actual health in about a minute.
Dizzout: the drug-free option to consider alongside
Choosing between an anticholinergic and an antihistamine is still choosing side effects: dry mouth and blurred vision on one path, sleepiness on both. Dizzout skips the chemistry entirely. It is a drug-free motion sickness app that plays calibrated sound through any wired or Bluetooth headphones, so there is no timing question, no age-banded dosing and no drowsiness.
Most users feel better in about 90 seconds, and it is designed for both prevention and the after-symptoms-start moment that tablets handle worst. It runs on iOS and Android, free to try with 3 full sessions, then $7.99/month or $49.99/year. For parents weighing which tablet a child can have, it is also a way to sidestep the age-band question altogether; our medicine-for-kids page covers what each label says by age.
When to use which
Read from the labels alone: hyoscine's short onset fits short-notice trips, sick-already moments and young children (via the 150 microgram children's brands), while cinnarizine's slow build and 8-hourly rhythm fit long, planned journeys. Read from the caution lists: glaucoma sends you away from hyoscine, Parkinson's disease and pregnancy away from cinnarizine, and both away if you must drive while affected. Since most people carry at least one line of that grid, the pharmacist conversation is not a formality. Drug-free approaches sit outside the grid entirely, which is why many travelers start there, and Dizzout is one such option built for both before and during the journey.
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Frequently asked questions
Is cinnarizine or hyoscine better for sea sickness?
Neither label crowns a winner; they differ on logistics. A long crossing plays to cinnarizine's 2-hour lead and 8-hourly repeats, while a short hop or a suddenly rough patch plays to hyoscine's 20-to-30-minute onset and its at-the-onset-of-nausea option. Deck position and horizon time matter alongside either; our seasickness guide covers that half.
Are cinnarizine and hyoscine the same kind of drug?
No. Cinnarizine is a sedating antihistamine (with calcium-channel activity) and hyoscine hydrobromide is an anticholinergic. They act on different relays of the same inner-ear-to-brain circuit, carry different caution lists, and suit different journey shapes, which is exactly why UK shelves stock both.
Which has fewer side effects?
Different, rather than fewer. Cinnarizine's headline effect is sleepiness (9.9% in Stugeron's trial data) plus stomach upset softened by taking it after meals; hyoscine's is the anticholinergic set: dry mouth, blurred vision and drowsiness, with glaucoma an absolute stop. Individual reactions vary, so treat the lists as questions to ask a pharmacist, not scores.
Cinnarizine versus hyoscine hydrobromide is the real question underneath most UK brand comparisons, and the answer is a schedule and a caution list, not a champion. Match the clock to your journey, put your health history against the disqualifiers with a pharmacist, and read the pack. Or step outside the grid: Dizzout uses calibrated sound, not chemistry, works through any headphones, and is built for the moment the tablets miss. Try Dizzout free.
Related comparisons
- Cinnarizine: the full ingredient page
- Hyoscine hydrobromide tablets: the full ingredient page
- Stugeron 15, the cinnarizine brand
- Kwells, the hyoscine brand
- All motion sickness comparisons
This page is informational and not a substitute for professional medical advice; talk to your doctor or pharmacist and follow the product label. Stugeron, Kwells, Joy-Rides, Scopoderm and other product and brand names are trademarks of their respective owners; Dizzout is not affiliated with or endorsed by them.