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Royal Mail tracked 24 or 48 hour delivery in plain, unmarked packaging.
Pharmacy, clinic and prescribers based in Greater Manchester.
Where a prescription is needed, the price you see includes your consultation and prescription.
Fill in a quick online consultation for our licensed pharmacists to review.
Our pharmacists will review your treatment to ensure it’s suitable.
Your treatment will be delivered to your door quickly & discreetly.
| Medication Name | Chlorphenamine 4mg Tablets |
| Medication Form | Tablets (28 tablets per pack) |
| Used for | Hay fever, hives, itchy skin and other allergies |
| Who can use | Adults and children (aged 6 years and over) |
| Active Ingredient(s) | Chlorphenamine maleate 4mg |
| Usual Dose | One tablet every 4 to 6 hours (maximum 6 tablets in 24 hours) |
| Common Side Effects | Drowsiness, tiredness, dizziness, headache, blurred vision, dry mouth |
| Prescription Required | No (pharmacy medicine) |
| Patient Information Leaflet | View the Patient Information Leaflet |
Chlorphenamine 4mg tablets are an antihistamine used to relieve the symptoms of allergic conditions, including:
You can buy chlorphenamine tablets online from Click2Pharmacy. Just answer a few short questions so our pharmacists can check they’re right for you.
Chlorphenamine belongs to a group of medicines called antihistamines. When your body comes into contact with an allergen, such as pollen, it releases a chemical called histamine, which triggers allergy symptoms. Chlorphenamine works by blocking the action of histamine.
This helps to ease common allergy symptoms, including:
Chlorphenamine tablets are suitable for most adults and children aged 6 and over. They aren’t recommended for children under 6.
Don’t take chlorphenamine tablets if you:
Speak to your doctor or pharmacist before taking them if you:
The usual chlorphenamine dosage for adults, including older adults, is one 4mg tablet every four to six hours. Don’t take more than six tablets in 24 hours.
Children aged 6 to 12 should take half a tablet (2mg) every four to six hours, with no more than three tablets in 24 hours.
Always take chlorphenamine exactly as described on the pack or as your pharmacist has told you.
If your symptoms don’t get better or get worse, speak to your doctor rather than taking more.
Like all medicines, chlorphenamine tablets can cause side effects, although not everybody gets them. Children and older people are more likely to have side effects.
These may affect more than 1 in 10 people:
These may affect up to 1 in 10 people:
It isn’t known how often these side effects happen:
Stop taking chlorphenamine and get medical help straight away if you have:
If you get any side effects, speak to your doctor or pharmacist. You can also report them through the MHRA Yellow Card Scheme.
Other antihistamines and nasal sprays can also help with allergy symptoms. Antihistamine tablets you might consider include:
Active ingredient: Chlorphenamine maleate 4mg
Other ingredients: Lactose, maize starch, magnesium stearate, colloidal silicon dioxide, quinoline yellow (E104)
Inactive ingredients can vary by brand or manufacturer. If you have any allergies or sensitivities, such as peanut (arachis) oil, lactose, gelatin, soy or certain dyes and preservatives, please let us know during your consultation and check the ingredient list carefully before use.
Chlorphenamine is a pharmacy medicine, so you don’t need a prescription to get it. It isn’t sold on open shelves because a pharmacist needs to check it’s suitable for you first. When you order chlorphenamine from Click2Pharmacy, you’ll answer a few quick questions before our pharmacists approve your order.
Piriton is a branded version of chlorphenamine. Piriton tablets contain the same active ingredient, chlorphenamine maleate, at the same 4mg strength. Inactive ingredients can differ between brands, so check the label if you have any allergies or intolerances.
Chlorphenamine usually starts to work within 30 minutes of taking a tablet. Its effects are strongest after one to two hours and last for around four to six hours. That’s why each dose is taken every four to six hours.
Chlorphenamine is a drowsy antihistamine, and drowsiness is its most common side effect, affecting more than 1 in 10 people. Some people also feel dizzy or tired, or find it hard to concentrate. If you’d prefer an antihistamine that’s less likely to make you sleepy, ask our pharmacists about non-drowsy options like cetirizine or loratadine.
If you miss a dose of chlorphenamine, don’t take a double dose to make up for it. Carry on with your usual doses, leaving at least four hours between tablets. Never take more than six tablets in 24 hours.
If you’ve accidentally taken more than six tablets in 24 hours, or a child aged 6 to 12 has taken more than three, contact your doctor or NHS 111 for advice. Keep the pack to hand so you can tell them exactly what’s been taken. You may feel more drowsy than usual, so don’t drive.
Page content authored by Dr Hussain Ahmad, last reviewed by Mr Mohammed on 10th November 2026.
