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Health Condition


Antihistamines

Shopping for antihistamines for hay fever or everyday allergies? This category brings together common options used to help manage allergy symptoms such as sneezing, a runny or itchy nose, watery or irritated eyes, itching, and some allergic skin reactions. Many people choose by trigger (for example pollen, pets or house dust mites) and by when they need support—daytime use when you want to stay alert, or night-time use if drowsiness warnings are less of a concern. You’ll see a range of brands, strengths and pack sizes, so it’s easy to compare what suits your routine.

withaid is a UK based and regulated pharmacy, with orders sent Royal Mail in discreet packaging and fast, free delivery on orders over £20. Use the product details to check suitability (including age guidance), compare strengths, pack sizes and price, and choose an option that fits your needs. Some medicines may require a short suitability check to help make sure they’re appropriate for you. You can also browse related Allergy & Hayfever categories below if your symptoms are mainly in the eyes or nose.


Explore Allergy & Hayfever categories

Popular types of antihistamines

  • Once-daily “less drowsy” tablets (often chosen for daytime symptoms)
  • Shorter-acting tablets (may require more frequent dosing as directed in the leaflet)
  • Capsules (an alternative oral format, product-dependent)
  • Oral solutions / syrups (liquid options for easier dosing)
  • Insect bite creams / gels (topical options for bites and stings, where suitable)

How to choose the right option

  • Match the format to your symptoms: oral antihistamines can help with wider symptoms, while eye drops or nasal sprays can target one area.
  • Use a quick symptom guide: itchy or watery eyes may suit eye drops; a blocked nose may suit a nasal spray; mixed nose-and-eye symptoms may suit an antihistamine format (depending on product directions).
  • Choose your dosing style: some options are taken once daily, while others may be taken more often as directed.
  • Check drowsiness warnings: if a product may cause drowsiness, avoid alcohol and take extra care with driving or machinery.
  • Check age guidance: children’s products have specific minimum ages and dosing instructions.
  • Don’t double up: avoid taking more than one antihistamine at the same time unless a pharmacist or prescriber has advised it.

Quick links: common needs

FAQs

What symptoms can antihistamines help with?

Antihistamines are commonly used for hay fever and other allergies, including sneezing, a runny or itchy nose, watery or irritated eyes, itching, and some allergic skin reactions. Always check the label and leaflet for the specific product’s uses.

What’s the difference between “drowsy” and “less drowsy” antihistamines?

Some antihistamines can make you feel sleepy, while others are less likely to. If you need symptom control during the day, many people choose a “less drowsy” option. If a product warns about drowsiness, avoid alcohol and take extra care with driving and machinery.

How do I choose between tablets, capsules and liquids?

Tablets and capsules are convenient for regular use, while oral solutions or syrups can be easier if you prefer a liquid format or need flexible dosing. Follow the dosing instructions carefully, especially for children.

Can I use an antihistamine alongside a nasal spray or eye drops?

Some people use an oral antihistamine for overall symptoms and add a nasal spray for congestion or eye drops for eye irritation. Check the product information and ask a pharmacist if you’re unsure what’s safe to combine.

Are antihistamines suitable for children?

Suitability depends on the child’s age and the specific medicine. Use a children’s product where appropriate and follow the pack and leaflet instructions. If symptoms are severe, frequent, or not improving, ask a pharmacist for advice.

Can I take antihistamines if I’m pregnant or breastfeeding?

If you’re pregnant, trying to conceive, or breastfeeding, speak to a pharmacist or GP before choosing an antihistamine. They can help you pick an option that’s appropriate for your circumstances.

When should I seek urgent medical help for allergy symptoms?

Seek urgent help if you have breathing difficulties, wheezing, rapid swelling of the face/lips/tongue or throat, or symptoms that feel severe or rapidly worsening.

Important: Antihistamines are medicines and are not suitable for everyone. Always read the label and patient information leaflet, use only as directed, and do not exceed the stated dose. If you’re unsure what to choose, take other medicines, have a long-term condition, or symptoms persist, speak to a pharmacist or GP.

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  • Front: Phenergan Elixir 100ml packaging with key details: 5 mg/5 ml promethazine hydrochloride, sugar-free orangeflavor, and reference to age limit of 2 years. Back: Phenergan Elixir 100ml Back panel outlining purpose of medication, warnings about use, key ingredients,  storage instructions, manufacturer details and a barcode.

    Phenergan Elixir 5mg/5ml Oral Solution 100ml

    Phenergan

    £16.99
    Phenergan Elixir 5mg/5ml Oral Solution (100ml) is an antihistamine medicine containing promethazine hydrochloride. It is used to help relieve symptoms of allergy such as hay fever and urticaria (hives), and it may also be used to help prevent or treat...
    Qty in Cart: 0
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    £16.99
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  • Phenergan 25mg 56 Tablets

    Phenergan 25mg 56 Tablets

    Phenergan

    £14.29
    These promethazine tablets can be used to treat the following conditions: to treat allergic conditions, such as hay fever or rashes (like nettle rash or hives); to treat or prevent you feeling sick (nausea) or being sick (vomiting), such as in travel...
    Qty in Cart: 0
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    £14.29
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  • Phenergan 10mg 56 Tablets

    Phenergan 10mg 56 Tablets

    Phenergan
    £7.89
    Phenergan 10mg Tablets provides effective relief from the symptoms of hay fever, allergies, nettle rash, hives, insomnia, nausea, vomiting and travel sickness. Contains an effective sedative, that aids restful sleeping Do not use if pregnant or...
    Qty in Cart: 0
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    £7.89
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  • Hayleve Allergy 28 Tablets

    Hayleve Allergy 28 Tablets

    Hayleve
    £2.89
    Hayleve is used to treat the allergic symptoms of hayfever and other allergies Suitable for adults and children over 6 years If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor or...
    Qty in Cart: 0
    Price:
    £2.89
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  • RxFarma Chlorphenamine 4mg 28 Tablets

    RxFarma Chlorphenamine 4mg 28 Tablets

    Rxfarma
    £1.49
    These tablets are an antihistamine that can reduce the effects of symptoms caused by allergies such as hay fever Not suitable for use by children under the age of 6 If you are pregnant, think you may become pregnant, or are breastfeeding, you...
    Qty in Cart: 0
    Price:
    £1.49
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  • Piriton Allergy 30 Tablets

    Piriton Allergy 30 Tablets

    Piriton
    £4.99
    Piriton Allergy Tablets are used to treat the allergic symptoms of hayfever and other allergies Do not give to children under 6 years Talk to your doctor before taking Piriton Allergy Tablets if you are pregnant or breast feeding Do not use...
    Qty in Cart: 0
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    £4.99
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  • Piriton 500 Tablets

    Piriton 500 Tablets

    Piriton
    £43.99
    Piriton Tablets are used to treat the allergic symptoms of hayfever and other allergies Do not give to children under 6 years Talk to your doctor before taking Piriton Tablets if you are pregnant or breast feeding DO NOT USE if you have ever...
    Qty in Cart: 0
    Price:
    £43.99
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  • Numark-Cetirizine-10mg-60-Tablets

    Numark Cetirizine 10mg 60 Tablets

    Numark
    £3.59
    Numark Cetirizine 10mg 60 Tablets are designed to provide relief from allergy symptoms such as sneezing, itching, watery eyes, and runny nose. This over-the-counter medication is ideal for individuals suffering from allergies and hayfever. Each tablet...
    Qty in Cart: 0
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    £3.59
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  • Piriton Allergy 60 Tablets

    Piriton Allergy 60 Tablets

    Piriton
    £8.49
    Piriton Allergy Tablets are used to treat the allergic symptoms of hayfever and other allergies Do not give to children under 6 years Talk to your doctor before taking Piriton Allergy Tablets if you are pregnant or breast feeding Do not use...
    Qty in Cart: 0
    Price:
    £8.49
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  • Crescent Chlorphenamine 4mg 28 Tablets

    Crescent Chlorphenamine 4mg 28 Tablets

    Crescent
    £1.49
    This product is used to relieve the symptoms of allergic conditions, such as hay fever, inflammation of the nose and upper airways, allergic reactions to medicines, nettle rash, local itching, severe skin rash with swelling, food allergies and insect...
    Qty in Cart: 0
    Price:
    £1.49
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  • Numark Antihistamine and Allergy Relief 2mg/5ml Oral Solution 150ml

    Numark Antihistamine and Allergy Relief 2mg/5ml Oral Solution 150ml

    Numark
    £13.69
    Numark Antihistamine and Allergy Relief 2mg/5ml Oral Solution 150ml provides fast and effective relief from allergies and hayfever symptoms. This oral solution is specifically formulated to alleviate sneezing, itching, watery eyes, and runny nose caused...
    Qty in Cart: 0
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    £13.69
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  • Almus Chlorphenamine 4mg 28 Tablets

    Almus Chlorphenamine 4mg 28 Tablets

    Almus
    £2.89
    Almus Chlorphenamine 4mg 28 Tablets are an effective allergy relief medication designed to provide fast and long-lasting relief from symptoms associated with allergies and hayfever. These tablets contain 4mg of chlorphenamine, a powerful antihistamine...
    Qty in Cart: 0
    Price:
    £2.89
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  • Zirtek Allergy Relief 7 Tablets

    Zirtek Allergy Relief 7 Tablets

    Zirtek
    £3.99
    Zirtek Allergy Relief Tablets give effective relief from hayfever, dust or pet allergies and urticaria. They help you manage allergy related sneezing, irritated, runny and blocked up nose, itchy, red and watering eyes and skin rashes. Gets working...
    Qty in Cart: 0
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    £3.99
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  • Piriton Syrup 150ml

    Piriton Syrup 150ml

    Piriton
    £9.99
    Piriton Syrup is used to treat the allergic symptoms of hayfever and other allergies Do not give to children under 12 months Talk to your doctor before taking the Piriton Syrup if you are pregnant or breast feeding Do not use continuously for more...
    Qty in Cart: 0
    Price:
    £9.99
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  • Clarityn Allergy 10mg Tablets 7

    Clarityn Allergy 10mg Tablets 7

    Clarityn
    £3.99
    Clarityn Allergy helps to treat allergy symptoms, with a convenient once daily tablet. It relieves sneezing, a runny nose, itchy or burning eyes and allergic skin conditions. Gives you all day relief Doesn't cause drowsiness Do not use if pregnant...
    Qty in Cart: 0
    Price:
    £3.99
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  • Flamingo 10mg Loratadine 30 Tablets

    Flamingo 10mg Loratadine 30 Tablets

    Flamingo
    £1.99
    This medicine helps relieve symptoms associated with allergic rhinitis such as sneezing, runny or itchy nose, and itchy or burning eyes; the medicine may also be used to help relieve symptoms of urticaria (itching and redness) which is often known as...
    Qty in Cart: 0
    Price:
    £1.99
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  • Bells 10mg Cetirizine Hydrochloride Allergy Relief 60 Tablets

    Bells 10mg Cetirizine Hydrochloride Allergy Relief 60 Tablets

    Bells
    £3.24
    This medicine is used to relieve the symptoms of seasonal allergic rhinitis (e.g. hayfever), perennial allergic rhinitis (e.g. year round allergies often due to house dust mites or animal allergies) and urticaria (itchy, red, swollen skin). Suitable...
    Qty in Cart: 0
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    £3.24
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  • RelonChem Loratadine Peach Solution 100ml

    RelonChem Loratadine Peach Solution 100ml

    RelonChem
    £17.39
    This product relieves symptoms associated with allergic rhinitis (for example, hayfever), such as sneezing, runny or itchy nose and burning or itchy eyes and may also be used to help relieve symptoms of urticaria (itching and redness), which is often...
    Qty in Cart: 0
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    £17.39
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  • Genesis Loratadine 10mg 30 Tablets

    Genesis Loratadine 10mg 30 Tablets

    Genesis
    £2.59
    This product can relieve symptoms such as sneezing, runny or itchy nose; irritation inside the nose and eyes; itchy or burning eyes and is also used to help relieve the symptoms associated with skin conditions such as rash, itching and...
    Qty in Cart: 0
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    £2.59
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  • Dr Reddy's Cetirizine Hydrochloride 10mg 30 Tablets

    Dr Reddy's Cetirizine Hydrochloride 10mg 30 Tablets

    Dr Reddy
    £2.89
    Dr Reddy's Cetirizine Hydrochloride 10mg Tablets are used for the relief of symptoms of hayfever and other allergic conditions (e.g. sneezing, runny or itchy nose) or for skin rashes (chronic nettle rash, idiopathic urticaria) Not suitable for...
    Qty in Cart: 0
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    £2.89
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  • Accord Loratadine 10mg 30 Tablets

    Accord Loratadine 10mg 30 Tablets

    Accord
    £1.79
    Accord Loratadine 10mg 30 Tablets by Accord brand is an effective allergy relief medication in the Allergy & Hayfever category. Each tablet contains 10mg of loratadine, a non-drowsy antihistamine that helps alleviate symptoms such as sneezing, runny...
    Qty in Cart: 0
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    £1.79
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  • Pinewood Loratadine 5mg/5ml Syrup 100ml

    Pinewood Loratadine 5mg/5ml Syrup 100ml

    Pinewood
    £10.29
    Loratadine is used to relieve the symptoms of hayfever (allergic rhinitis) in adults and children Not to be taken by children aged under 2 years If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask...
    Qty in Cart: 0
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    £10.29
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  • Bristol Chlorphenamine 4mg 28 Tablets

    Bristol Chlorphenamine 4mg 28 Tablets

    Bristol
    £2.89
    The active ingredient is Chlorphenamine maleate, an antihistamine which can help to relieve the symptoms of some allergies and itchy skin rashes Do not give to children under 6 years Do not take Chlorphenamine Tablets if you are pregnant, planning...
    Qty in Cart: 0
    Price:
    £2.89
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  • Teva Cetirizine 30 Tablets

    Teva Cetirizine 30 Tablets

    Teva Pharma
    £2.49
    Cetirizine dihydrochloride is the active ingredient of Cetirizine 10mg Film-coated Tablets, it is an antiallergic medication Do not give this medicine to children below the age of 6 years If you are pregnant or breast-feeding, think you may be...
    Qty in Cart: 0
    Price:
    £2.49
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  • RelonChem Loratadine 10mg 30 Tablets

    RelonChem Loratadine 10mg 30 Tablets

    RelonChem
    £2.59
    This medicine contains Loratadine which belongs to a group of medicines called antihistamines, which act to relieve the symptoms of allergies in adults and children Do not give to children under 2 years or who weigh 30kg (4st 7lb) or less If you...
    Qty in Cart: 0
    Price:
    £2.59
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  • Numark Loratadine 10mg 60 Tablets

    Numark Loratadine 10mg 60 Tablets

    Numark
    £6.99
    Numark Loratadine 10mg 60 Tablets are a highly effective allergy and hayfever relief medication. Each tablet contains 10mg of loratadine, offering fast-acting relief from symptoms such as sneezing, runny nose, and itchy eyes. This non-drowsy formula is...
    Qty in Cart: 0
    Price:
    £6.99
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  • Numark Antihistamine and Allergy Relief 4mg 28 Tablets

    Numark Antihistamine and Allergy Relief 4mg 28 Tablets

    Numark
    £2.29
    Numark Antihistamine and Allergy Relief 4mg 28 Tablets provide fast and effective relief from allergies and hayfever symptoms. Each tablet contains 4mg of the active ingredient to help alleviate sneezing, watery eyes, and itching caused by allergies...
    Qty in Cart: 0
    Price:
    £2.29
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  • Benadryl Allergy Relief 48 Capsules

    Benadryl Allergy Relief 48 Capsules

    Benadryl
    £16.99
    This medicine is used to relieve the symptoms of hay fever and other allergic conditions such as pet allergies, dust allergies and skin reactions Suitable for adults and children aged 12-65 years Consult doctor first if pregnant or...
    Qty in Cart: 0
    Price:
    £16.99
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  • Almus Loratadine Allergy Relief Tablets 30

    Almus Loratadine Allergy Relief Tablets 30

    Almus
    £2.09
    The Almus Loratadine Allergy Relief Tablets provide fast-acting relief from allergies and hayfever symptoms. Each pack contains 30 tablets of Loratadine, a non-drowsy antihistamine that effectively treats sneezing, itching, watery eyes, and runny nose...
    Qty in Cart: 0
    Price:
    £2.09
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  • Afterbite Xtra 20g

    Afterbite Xtra Soothing Gel 20g

    After Bite
    £8.29
    The Afterbite Xtra Soothing Gel 20g by After Bite is the perfect solution for quick relief from insect bites and stings. This gel provides instant relief with its soothing formula that effectively alleviates itching, swelling, and irritation. Its small...
    Qty in Cart: 0
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    £8.29
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  • After Bite Kids Insect Bite Relief Treatment 20g

    After Bite Kids Insect Bite Relief Treatment 20g

    After Bite
    £7.79
    The After Bite Kids Insect Bite Relief Treatment 20g is the perfect solution to alleviate discomfort caused by insect bites for children. Specifically designed for kids, this product provides fast relief from itching, swelling, and irritation caused by...
    Qty in Cart: 0
    Price:
    £7.79
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  • Anthisan Cream 25g

    Anthisan Insect Bite Relief Cream 25g

    Anthisan
    £9.49
    The Anthisan Insect Bite Relief Cream 25g is a fast-acting and effective solution for relieving the discomfort caused by insect bites and stings. Specifically designed for those pesky bug bites, this cream contains an antihistamine that helps to reduce...
    Qty in Cart: 0
    Price:
    £9.49
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  • Clarityn 60 Tablets

    Clarityn 60 Tablets

    Clarityn
    £15.99
    Clarityn Allergy Tablets help to reduce your allergy symptoms by stopping the effects of a substance called “histamine”, which is produced in the body when you are allergic to something Suitable for adults and children over 6...
    Qty in Cart: 0
    Price:
    £15.99
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  • Clarityn Allergy 10mg Tablets 30

    Clarityn Allergy 10mg Tablets 30

    Clarityn
    £8.99
    Clarityn Allergy Tablets provide relief from allergy symptoms, with a convenient once daily tablet. They help to relieve sneezing, a runny nose, itchy or burning eyes and allergic skin conditions. Provide day long relief Doesn't cause...
    Qty in Cart: 0
    Price:
    £8.99
    Subtotal:
  • Clarityn Allergy 10mg Tablets 14

    Clarityn Allergy 10mg Tablets 14

    Clarityn
    £6.09
    Clarityn helps treat allergy symptoms quickly, with a convenient once daily tablet. It relieves sneezing, a runny nose, itchy or burning eyes and allergic skin conditions. Gives you up to 24 hours relief Doesn't cause drowsiness Do not use if...
    Qty in Cart: 0
    Price:
    £6.09
    Subtotal:
  • Benadryl One A Day Relief 14 Tablets

    Benadryl One A Day Relief 14 Tablets

    Benadryl
    £7.19
    Benadryl® One A Day Relief Tablets provide 24 hour relief from symptoms of hayfever and allergies. The capsules also give relief from hives and other allergic skin rashes. Helps you to stop sneezing, dries runny nose and stops eyes...
    Qty in Cart: 0
    Price:
    £7.19
    Subtotal:
  • Benadryl Allergy Relief 24 Capsules

    Benadryl Allergy Relief 24 Capsules

    Benadryl
    £9.49
    Benadryl® Allergy Liquid Release Capsules gives relief from symptoms of hayfever and allergies. The capsules will also relieve hives and other allergic skin rashes. Helps you stop sneezing, dries a runny nose and watery eyes Gets active in 15...
    Qty in Cart: 0
    Price:
    £9.49
    Subtotal:
  • Benadryl Allergy Relief 12 Capsules

    Benadryl Allergy Relief 12 Capsules

    Benadryl
    £5.79
    Benadryl® Allergy Liquid Release Capsules gives relief from symptoms of hayfever and allergies. The capsules will also relieve hives and other allergic skin rashes. Starts working in 15 minutes and lasts 8 hours Stop sneezing, runny nose and...
    Qty in Cart: 0
    Price:
    £5.79
    Subtotal:
  • Benadryl Allergy Children's 6+ Liquid 70ml

    Benadryl Allergy Children's 6+ Liquid 70ml

    Benadryl
    £8.99
    Benadryl® Allergy Children's 6 Plus Oral Solution effectively relieves symptoms of pet allergies, dust allergies hayfever, and skin allergies. Benadryl Allergy helps to relieve a runny nose, sneezing, itchy watery eyes, hives and itchy skin...
    Qty in Cart: 0
    Price:
    £8.99
    Subtotal:
  • Benadryl Children's Allergy Oral Solution 100ml

    Benadryl Children's Allergy Oral Solution 100ml

    Benadryl
    £9.99
    Benadryl Allergy Children’s Oral Solution treats hay fever and year-round allergies such as dust or pet allergies Suitable for adults and children over 2 years Consult doctor first if pregnant or breastfeeding DO NOT USE if your child...
    Qty in Cart: 0
    Price:
    £9.99
    Subtotal:
  • Benadryl Plus 12 Capsules

    Benadryl Plus 12 Capsules

    Benadryl
    £6.09
    Benadryl Plus Capsules helps to relieve the symptoms of hayfever and allergies. The capsules contain a decongestant combines with a antihistamine to relieve nasal congestion, clear sinuses, stop sneezing, dry a runny nose and stop eyes watering...
    Qty in Cart: 0
    Price:
    £6.09
    Subtotal:
  • Anthisan Bite and Sting Cream 20g

    Anthisan Bite and Sting Cream 20g

    Anthisan
    £8.59
    Anthisan Bite and Sting Cream 20g is a trusted first aid remedy for insect bites and stings, providing fast relief from itching, pain, and swelling. Manufactured by Anthisan, this cream contains mepyramine maleate, an antihistamine that helps to reduce...
    Qty in Cart: 0
    Price:
    £8.59
    Subtotal:
  • Actifed Multi-Action 12 Tablets

    Actifed Multi-Action 12 Tablets

    Actifed
    £5.99
    Actifed Multi-Action 12 Tablets are a reliable solution for managing allergy and hayfever symptoms. Manufactured by Actifed, these tablets offer multi-action relief to help alleviate sneezing, runny nose, itchy/watery eyes, and nasal congestion. Their...
    Qty in Cart: 0
    Price:
    £5.99
    Subtotal:
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