betahistine dihydrochloride at a glance
Medicine class
Histamine analogue and anti-vertigo preparation
Licensed role
Treating vertigo, tinnitus and hearing loss associated with Ménière’s syndrome
Available form
Prescription-only tablets
Food
Taking tablets with or after food may reduce indigestion
What is betahistine dihydrochloride used for?
Selected UK products are licensed for symptoms associated with Ménière’s syndrome.
Vertigo or a spinning sensation
Tinnitus
Hearing loss
Nausea associated with Ménière’s syndrome
How does betahistine dihydrochloride work?
Its mechanism is not fully established. Betahistine partly stimulates histamine H1 receptors and blocks H3 receptors, which may alter histamine signalling, improve inner-ear blood flow and support compensation within vestibular pathways.
betahistine dihydrochloride preparations and strengths
Tablet
Route: Oral
Strengths: 8 mg, 16 mg
How to take betahistine dihydrochloride
Follow the dispensing label and prescriber’s instructions. Swallow tablets with water; taking them with or after food may reduce stomach discomfort.
Do not change how much you take without advice.
Check the pack leaflet because tablet appearance, score-line use, excipients and storage instructions can differ between products.
betahistine dihydrochloride side effects
Common or expected effects
- Headache
- Feeling sick
- Indigestion
- Mild abdominal discomfort or bloating
Get urgent medical advice
- A severe allergic reaction, including facial or throat swelling, breathing difficulty or collapse, needs emergency help.
- Seek prompt medical advice for unexplained bleeding or widespread bruising, as a low platelet count has been reported with unknown frequency.
betahistine dihydrochloride in pregnancy
Information about use during pregnancy is limited, so betahistine is generally avoided as a precaution. A prescriber may consider it when Ménière’s symptoms cannot be suitably managed another way. Discuss pregnancy or plans to conceive before treatment.
betahistine dihydrochloride while breastfeeding
It is unknown whether betahistine passes into human milk, although transfer is possible. Avoid it while breastfeeding if possible and discuss alternatives. If use is necessary, seek advice if the baby develops vomiting, diarrhoea, rash, unusual sleepiness or poor feeding.
betahistine dihydrochloride interactions
Tell the prescriber or pharmacist about all medicines and supplements. Main interaction concerns include:
Monoamine oxidase inhibitors, including MAO-B inhibitors such as selegiline
They may inhibit betahistine metabolism and increase exposure, so concurrent use requires caution.
Antihistamines
Their opposing effects on histamine signalling could theoretically make either medicine less effective.
Common questions about betahistine dihydrochloride
Answers are fully visible for fast scanning and source review.
How long does betahistine take to work?
Some people notice improvement after a couple of weeks, but it may take longer. Contact the prescriber if symptoms worsen or treatment does not appear helpful.
Does betahistine cure Ménière’s disease?
No. It is used to reduce symptoms and attacks associated with Ménière’s syndrome rather than cure the underlying condition.
Sources
These sources were used to prepare and review this medicine page.
Prepared and reviewed by the iatroX editorial team.