Ebastine (Kestin): Uses, Dosage & Side Effects
What it is
Second-generation antihistamine
A once-daily, non-sedating antihistamine for hay fever and chronic hives — effective and widely used abroad, but not available in the US.
Ebastine, sold as Kestin (and other brand names), is a long-acting second-generation H1-antihistamine. Taken once daily, it controls sneezing, itching, runny nose, and chronic hives with considerably less drowsiness than older antihistamines. It has a strong clinical track record in Europe, Asia, and Latin America. However, ebastine has never been approved by the US Food and Drug Administration, so US patients cannot obtain it at a domestic pharmacy. If you are in the US, your clinician or pharmacist can suggest FDA-approved alternatives with a similar profile.
This is a general medication overview, not medical advice or a prescription. A pharmacist or your prescriber can confirm what's right for you.
Key facts
Ebastine is a second-generation (non-sedating) H1-antihistamine — it causes far less drowsiness than older drugs like diphenhydramine.
Ebastine is not approved by the US FDA and is not available at US pharmacies; it is marketed in many other countries as Kestin, Ebastel, and Evastin.
Second-generation antihistamines as a class are selective peripheral H1-receptor antagonists with significantly reduced CNS penetration compared to first-generation agents.
How Ebastine works
Allergy symptoms are driven largely by histamine — a chemical your immune system releases when it encounters an allergen. Histamine binds to H1 receptors in the nose, eyes, and skin, triggering sneezing, itching, swelling, and hives. Ebastine is a selective H1-receptor antagonist: it occupies those receptors, blocking histamine from attaching and setting off symptoms. Because it is lipophobic (poor brain penetration), it produces far less sedation than first-generation antihistamines such as diphenhydramine.
What it's used for
Ebastine is used to treat the conditions below. This isn't a full list of every off-label use — your prescriber can tell you if it fits your situation.
Seasonal and perennial allergic rhinitis — sneezing, runny nose, nasal itching, and congestion
Allergic conjunctivitis — itchy, watery, or red eyes associated with pollen or other allergens
Chronic spontaneous urticaria — persistent hives and skin itching
Dosage basics
These are general reference points, not a prescription. The right dose depends on your age, other medicines, and health — always follow the product label or your prescriber.
In countries where ebastine is marketed, the standard adult dose is 10 mg once daily; the dose may be increased for more troublesome symptoms. It can be taken with or without food. Pediatric, elderly, and hepatically impaired dosing may differ by product and country. These are general reference points only — the product label and your prescriber or pharmacist are the authority on the right dose for you. Do not self-adjust without guidance.
Don't start, stop, or change a dose based on this page. Read the label that comes with the product and confirm with a pharmacist or prescriber first.
Side effects to know
Most people tolerate it well, but every medicine has trade-offs. Common effects are usually mild; the serious ones below are rare but need prompt attention.
Usually mild
Common side effects
- Headache
- Dry mouth
- Mild drowsiness (less frequent than with first-generation antihistamines)
- Sore throat or mild nasal discomfort
- Nausea or stomach upset
Rare — seek care
Serious side effects
- Signs of hypersensitivity to the drug itself — facial swelling, hives, or difficulty breathing (seek immediate care)
- Fast, irregular, or pounding heartbeat
- Severe dizziness or fainting
Stop the medicine and get medical help right away for any serious reaction — trouble breathing or fast facial/throat swelling is a 911 emergency.
Interactions & cautions
Some medicines, conditions, and habits change how this drug works — or how safe it is. This isn't exhaustive, so share your full medication list with a pharmacist.
Interacts with
Azole antifungals (e.g., ketoconazole, itraconazole)
These drugs inhibit the liver enzymes that break down ebastine, potentially raising its blood levels. A prescriber may monitor or avoid this combination.
Macrolide antibiotics (e.g., erythromycin)
May increase ebastine exposure and could theoretically affect heart rhythm. Tell your pharmacist before combining these.
Alcohol and CNS depressants
Although ebastine is largely non-sedating, combining it with alcohol or sedative medicines can compound drowsiness. Assess your individual response before driving.
QT-prolonging drugs
Ebastine can modestly affect heart-rhythm parameters in some circumstances. Inform your prescriber of all medications you take.
Use caution or avoid if
- Known allergy or hypersensitivity to ebastine or any ingredient in the formulation
- Known cardiac arrhythmia or prolonged QT interval
- Significant hepatic impairment — metabolism may be reduced; prescriber adjustment required
- Pregnancy and breastfeeding — limited safety data; consult your clinician before use
What most pages leave out
Availability
AvailabilityNot FDA-approved in the US. Ebastine is widely marketed in Europe, Asia, and Latin America under brand names including Kestin, Ebastel, and Evastin, but it has not been approved for sale in the United States. US patients seeking a similar once-daily non-sedating antihistamine should ask their pharmacist about FDA-approved options such as cetirizine, levocetirizine, loratadine, or fexofenadine.
We flag this so you can make an informed choice — a pharmacist can tell you what's stocked and appropriate where you are.
❓Frequently Asked Questions
No. Ebastine is not FDA-approved and is not sold in US pharmacies or covered by US insurance. It is widely available in Europe, Asia, and Latin America. If you are in the US and want a comparable once-daily non-sedating antihistamine, FDA-approved options include cetirizine (Zyrtec), levocetirizine (Xyzal), loratadine (Claritin), and fexofenadine (Allegra). Ask your pharmacist which fits your situation.
Usually very little. Ebastine is a second-generation antihistamine designed to have poor penetration into the brain, so it causes far less sedation than first-generation drugs like diphenhydramine (Benadryl). Some people still notice mild sleepiness, particularly at higher doses. It is a good idea to see how it affects you before driving or operating machinery, especially when first starting it.
In countries where it is approved, ebastine is used as a once-daily maintenance treatment for ongoing allergy symptoms — it is designed for regular use rather than as-needed dosing. As with any medication, follow the label and your prescriber's instructions. If you have liver disease, a heart-rhythm condition, or are pregnant, discuss the risks with your clinician before starting.
All three are effective second-generation antihistamines with similar mechanisms and non-sedating profiles. Clinical trials generally show comparable relief for hay fever and hives across the class. The most practical difference for US readers is availability: loratadine and cetirizine are FDA-approved and sold over the counter, while ebastine is not available in the US at all.
No. Antihistamines including ebastine relieve allergy symptoms while you take them but do not change your immune system's underlying response to allergens. Once you stop, symptoms return. Allergy immunotherapy — a separate, clinician-supervised treatment — is the approach designed to retrain the immune system and produce longer-term tolerance. An allergist can advise whether immunotherapy is appropriate for you.
Medically reviewed by
Dr. Chet TharpeMD
Last reviewed July 2026
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Read moreEbastine manages symptoms. Immunotherapy targets the cause.
Medicines like Ebastineare great for calming allergy symptoms when they flare. If you'd rather not rely on a daily pill, allergy testing can pinpoint your triggers, and immunotherapy can retrain your immune system over time. Keep taking what your clinician recommends — this is a complement, not a replacement.
- At-home allergy testing — no clinic visit
- Immunotherapy reviewed by board-certified allergists
- Treats the cause, not just the symptoms
This content is for general informational purposes only and is not medical advice, a prescription, or a substitute for professional judgment. It does not account for your health, other medications, or dose, and drug information changes over time. Availability, approval status, and formulations differ by country. Always read the product label and ask your pharmacist or prescriber before starting, stopping, or changing any medication. Curex offers at-home allergy testing and immunotherapy for confirmed environmental allergies; it does not sell or provide the medication reviewed on this page and does not provide emergency care.