Seasoneze contains cetirizine dihydrochloride 10 mg, a once-daily non-sedating antihistamine from Biotech Laboratories. It treats hay fever, allergic rhinitis, itchy watery eyes, hives and allergic itching. It works best when started before an allergy season rather than after symptoms build.
What is Seasoneze?
Seasoneze contains cetirizine dihydrochloride 10 mg, a second-generation antihistamine, made in South Africa by Biotech Laboratories.
When the immune system reacts to something harmless — pollen, dust mite, mould, animal dander — mast cells release histamine. Histamine binding to H1 receptors produces the whole familiar sequence: sneezing, itching, a streaming nose, watery eyes, and in the skin, weals. Cetirizine occupies those receptors so histamine cannot.
The “second generation” matters. Older antihistamines like the chlorphenamine in Rhineton cross freely into the brain and cause substantial drowsiness. Cetirizine was designed to cross far less, which is what makes a once-daily antihistamine practical for someone who has to work, study or drive.
The same ingredient is sold as Austell Cetirizine, Zyrtec, Texa and others.
What is Seasoneze commonly used for?
Seasoneze is used for allergic conditions:
- Hay fever (seasonal allergic rhinitis) — sneezing, runny and itchy nose, itchy throat, watery eyes.
- Perennial allergic rhinitis, from dust mite, mould or pet dander.
- Allergic conjunctivitis — itchy, red, watery eyes.
- Chronic urticaria (hives), where it is a first-line treatment.
- Itching from allergic skin conditions, eczema flares and insect bites.
- Mild allergic reactions.
The name points at the main use, and there is a practical trick to seasonal allergy worth knowing: start before the season, not after symptoms arrive.
Antihistamines block histamine from binding to receptors, but they do not undo an allergic response already in full swing. Once the nose is inflamed and congested, an antihistamine has a much harder job. Taking it daily from a week or two before your usual trigger period — and continuing through it, rather than only on bad days — gives noticeably better control than reacting to symptoms as they occur.
For congestion specifically, antihistamines underperform expectations. Blocked nose in allergic rhinitis comes more from inflammation than from histamine, and a steroid nasal spray works considerably better for it. Many people with persistent hay fever do best with the spray as the foundation and cetirizine on top for sneezing and itching.
How Seasoneze fits into this medicine category
| Group | Examples | Note |
|---|---|---|
| Second-generation antihistamines | Cetirizine (Seasoneze, Austell Cetirizine), loratadine | Once daily; little drowsiness |
| First-generation antihistamines | Chlorphenamine (Rhineton), promethazine | Fast and effective; sedating |
| Steroid nasal sprays | Fluticasone, mometasone | Best for congestion; work over days |
| Decongestants | Pseudoephedrine, oxymetazoline | Short-term only; rebound with overuse |
| Eye drops | Sodium cromoglycate, antihistamine drops | Targeted relief for itchy eyes |
See the allergy, cold and flu medicines hub.
What to check before using Seasoneze
Take one tablet once daily, at any time, with or without food. Consistency matters more than timing.
Do not take it with another antihistamine, including cold, flu and allergy combination products that already contain one.
Speak to a pharmacist or doctor if:
- You have kidney disease. Cetirizine is cleared largely by the kidneys, and a reduced amount is often appropriate.
- You have liver disease.
- You are pregnant or breastfeeding.
- You are older, where drowsiness and urinary difficulty are more likely.
- You have an enlarged prostate or difficulty passing urine.
- You have epilepsy.
- The medicine is for a child. Paediatric syrups and lower strengths exist — check the right form and amount.
- You are due allergy testing. Antihistamines suppress skin prick test results and usually must be stopped several days beforehand. Tell whoever arranges the test that you take one.
Avoid alcohol until you know how it affects you.
Follow the pack instructions. This page does not set doses.
Possible cautions and when to ask a pharmacist or doctor
A minority do feel drowsy. Cetirizine sedates slightly more than loratadine or fexofenadine. If it affects you, take it in the evening, or ask a pharmacist about switching. Do not drive until you know how you respond.
Dry mouth, headache and tiredness are the other common effects, usually mild.
If it is not helping, something else is going on. Persistent symptoms despite a daily antihistamine can mean congestion is the dominant problem, that the trigger is not allergic at all, or that additional treatment is needed. Symptoms lasting beyond a few weeks warrant proper assessment rather than an indefinite over-the-counter routine.
Reducing exposure genuinely helps and reduces how much medicine you need: dust mite covers on mattress and pillows, keeping windows shut in the early morning and evening at high pollen times, showering and changing clothes after being outdoors, drying laundry indoors during pollen season, and keeping pets out of bedrooms.
Do not use decongestant nasal sprays for more than a few days. They work well briefly and then cause rebound congestion worse than the original — a common trap for someone whose nose stays blocked on an antihistamine.
Seek urgent medical attention for swelling of the face, lips, tongue or throat, difficulty breathing or swallowing, wheezing, faintness with a widespread rash, or a rash that blisters or peels. Hives accompanied by any swelling of the mouth or throat is an emergency, not an allergy inconvenience.
Related medicine guides
- Browse Allergy, Cold & Flu Medicines guides
- Read: Austell Cetirizine used for
- Read: Rhineton used for
Frequently asked questions
What is Seasoneze used for? Hay fever and allergic rhinitis, itchy watery eyes, hives and allergic itching. It contains cetirizine 10 mg.
Is it the same as Zyrtec or Austell Cetirizine? The active ingredient is the same. Brands and manufacturers differ.
Will it make me drowsy? Far less than older antihistamines, though a minority of people do notice it. Take it in the evening if so.
When should I start taking it for hay fever? Ideally a week or two before your usual season starts, and daily through it. Antihistamines work better preventing a reaction than reversing one already established.
Will it unblock my nose? Only partly. Congestion responds better to a steroid nasal spray used consistently over one to two weeks.
Can I take it every day? It is commonly taken daily through an allergy season. If you need it all year, ask for an assessment of what is triggering the symptoms.