Hay fever treatments explained: What actually works (and what doesn’t)

As we move into grass pollen season, the most common cause of hay fever in the UK, symptoms for many people are about to peak.

If you suffer from hay fever, you’ve probably tried a range of treatments over the years. From antihistamines to nasal sprays and even the so-called “hay fever jab”, there’s no shortage of options.

But which treatments actually work? And more importantly, which ones are simply managing symptoms rather than addressing the underlying cause?

Understanding the difference can help you make more informed decisions and avoid repeating the same cycle every year.

Why hay fever can be difficult to control

Hay fever, or allergic rhinitis, is caused by the immune system overreacting to harmless substances like pollen. This triggers the release of histamine and other chemicals, leading to symptoms such as sneezing, congestion, itchy eyes, and a runny nose.

Because the root issue lies in the immune response itself, many treatments focus on controlling symptoms, rather than changing how your body reacts to pollen.

This is why symptoms often return year after year.

First-line treatments: what most people use

For many people, treatment starts with over-the-counter medications. These are widely available and can be effective, particularly for milder symptoms.

Antihistamines are usually the first step. They work by blocking histamine, the chemical responsible for many allergy symptoms. Modern options such as cetirizine, loratadine, and fexofenadine are non-drowsy and suitable for daily use. They tend to work best when taken before symptoms peak, rather than waiting until symptoms are severe.

Nasal corticosteroid sprays are another key treatment. They reduce inflammation in the nasal passages and are particularly effective for congestion, although they need to be used consistently and can take several days to reach their full effect.

Eye drops can also be helpful for more targeted relief of itchy, red, or watery eyes.

Do these treatments actually work?

For many people, yes, especially when symptoms are mild to moderate.

However, they do have limitations. They need to be taken regularly throughout the season, and while they can improve symptoms, they don’t change the underlying allergy. For some people, symptoms are only partially controlled, and often return once treatment is stopped.

This is why many patients feel like they are managing hay fever, rather than truly improving it.

What about the “hay fever jab”?

The “hay fever jab” is a steroid injection sometimes used for severe symptoms. It can provide short-term relief, which is why it’s widely talked about.

However, it is not routinely recommended. Steroid injections affect the whole body and can carry a risk of side effects. They also do not address the underlying cause of the allergy.

It is best understood as a temporary measure, rather than a long-term solution.

A different approach: treating the cause

If your symptoms return every year or are not well controlled with standard treatments, it may be worth considering a different approach.

Allergen immunotherapy is designed to address the root cause of hay fever. Instead of simply reducing symptoms, it works by gradually training the immune system to become less sensitive to allergens such as pollen.

There are two main types of immunotherapy used in hay fever treatment: sublingual immunotherapy (SLIT) and subcutaneous immunotherapy (SCIT).

Sublingual immunotherapy (SLIT): treatment you take at home

SLIT involves taking a daily tablet or drops under the tongue, containing a small amount of the allergen.

Treatment begins with a supervised first dose in clinic, after which it becomes part of your daily routine at home. It is typically continued over a period of around three years.

Over time, this gradual exposure helps the immune system become less reactive. Many patients experience milder symptoms, reduced reliance on medication, and long-term improvement that can continue even after treatment has finished.

Subcutaneous immunotherapy (SCIT): clinic-based treatment

SCIT is another form of immunotherapy, delivered as a series of injections in a clinical setting.

Rather than daily treatment, it follows a structured schedule over several years, with appointments spaced throughout the year. Each visit includes a period of monitoring after the injection to ensure it is well tolerated.

Like SLIT, SCIT works by building tolerance to allergens such as grass and tree pollen. Over time, this can lead to better symptom control and a reduced need for ongoing medication.

It is often considered for patients with more persistent or severe symptoms, particularly when standard treatments have not provided sufficient relief.

Both SLIT and SCIT are well-established treatments with strong safety profiles, and the most appropriate option depends on your individual circumstances.

Hay fever in children: are treatments different?

Hay fever in children is often under-recognised, and symptoms don’t always present in obvious ways.

Rather than frequent sneezing, children may experience poor sleep, irritability, difficulty concentrating, or a persistent blocked nose. These symptoms can have a noticeable impact on mood, behaviour, and school performance.

While antihistamines and nasal sprays are commonly used, children with ongoing or more severe symptoms may benefit from a longer-term approach.

Importantly, licensed SLIT treatments are available for children from the age of five, and both SLIT and SCIT can be considered following specialist assessment.

Choosing the right treatment for you

Not all hay fever is the same. The type of pollen, timing of symptoms, and severity can vary significantly from person to person.

Understanding your specific triggers is key. With the right diagnosis, treatment can be tailored to your needs, whether that means optimising medications or considering immunotherapy.

Take control of your hay fever

There are more treatment options available than many people realise.

If you find yourself going through the same cycle each year, it may be time to take a different approach.

Book a consultation to get a personalised treatment plan and explore options that go beyond symptom control.