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Hay Fever & Allergy Relief
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Grazax 75,000 SQ-T 30 Tablets Rear view of Grazax 75,000 SQ-T 30 Tablets

Grazax 75,000 SQ-T 30 Tablets

Grazax 75,000 SQ-T 30 Tablets Product information

£135.99 (£4.53 per tablets)

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Grazax 75,000 SQ-T 30 Tablets

Grazax tablets are a prescription-only medication specifically for the treatment of a severe grass pollen allergy. They are generally prescribed to people who have not responded to other medicines.

Enjoy the warmer months without allergy symptoms.

Product Information for Grazax 75,000 SQ-T 30 Tablets

Get to know Grazax for allergy treatment

Grazax 75,000 SQ-T 30 tablets are designed to reduce allergic reactions to grass pollen – specifically the symptoms of sneezing, runny nose and itchy or watery eyes. Taken daily for usually 3 years, they dissolve under the tongue for fuss-free allergy treatment.

Grazax key features

Grazax helps reduce the symptoms of severe grass pollen allergies by introducing the body to small amounts of the pollen, allowing the immune system to build up a defence. The active ingredient is a standardised allergen extract of grass pollen from Timothy grass (Phleum pratense).

  • Daily oral tablet dissolved in the mouth

  • Contains small amounts of grass pollen

  • Use for 3 years, starting 4 months before trigger months  

Read more about Grazax in the Patient Information Leaflet that comes with the medication. Keep reading to understand in more detail if you might be eligible for Grazax treatment for a grass pollen allergy.

How does Grazax combat grass pollen allergy symptoms?

Using a process sometimes called desensitisation (or allergen immunotherapy), Grazax helps reduce allergy symptoms like sneezing, a runny nose (allergic rhinitis), and itchy eyes (allergic conjunctivitis).

The simplicity of desensitisation

Grazax works by giving the body small amounts of grass pollen over time, this slowly gets the body used to the pollen (allergen), encouraging the immune system to become stronger and less likely to trigger allergy symptoms.

Struggling with a different allergy trigger?

There are similar medicines available for tree pollen (Itulazax) and house dust mite (Acarizax) allergies. They work in a similar way to Grazax if your trigger is tree pollen or house dust mites.

Am I eligible for Grazax 75,000 SQ-T 30 Tablets?

Our independent doctors will always conduct a full review of your online consultation to make sure Grazax is the right treatment for you. Before you start a consultation, make sure you meet the initial eligibility criteria.  

  • You’ve already have been diagnosed by a doctor with a grass pollen allergy (rather than a general hay fever allergy). This is often done by skin prick test.

  • You’ve already tried other allergy treatments which haven’t worked for you, and your allergy symptoms are severe enough to stop you from doing everyday activities like being outside, working or sleeping.

  • You don’t have uncontrolled or severe asthma.

  • You don’t have an inflammatory condition in the mouth, such as oral lichen planus with ulcerations or severe oral mycosis.

  • You’ve already been prescribed Grazax and taken your first dose under supervision at your GP surgery (this is because Grazax could cause an allergic reaction when you take it - it is unlikely, but it can be serious if it does happen).

If you’ve not taken Grazax before, ask your GP if they can offer this kind of appointment for you. They may charge you a fee and the appointment shouldn’t last for more than one hour.

The British Society for Immunology also has a list of Immunologists in the UK, some of which will offer private appointments. This is only for the very first dose and you shouldn’t need another of these appointments thereafter.  

Our expert team are on-hand to have a confidential and judgement-free chat about any concerns or finding the right treatment path. Call us on 01295 262925 or email help@oxfordop.co.uk

Grazax 75,000 SQ-T 30 Tablets reviews

How to use Grazax 75,000 SQ-T 30 Tablets

Grazax tablets are only available for repeat prescriptions when your treatment has already been started by an allergy specialist. You should always follow the use instructions from your doctor.

Make sure to fully read over the Patient Information Leaflet that comes with your medication.

How to take Grazax

After your first dose has been taken under the supervision of your doctor or specialist, you can take it at home without medical supervision.  

The usual dose is one tablet, taken at the same time each day. Place the tablet under the tongue and allow it to dissolve. Do not swallow during the first minute and do not eat or drink for at least 5 minutes.

If you take more tablets than required, you may experience allergic symptoms including local symptoms from the mouth and throat. If these symptoms become severe, immediately contact your doctor or hospital. If you forget to take a dose, do not double up doses. Take the dose as soon as you remember and then take the next dose at the correct time.

How long to take Grazax for

Ideally Grazax should be started 16 weeks (4 months) before the grass pollen season (late April to July) and taken continuously for up to 3 years for maximum effect.

In clinical trials, people took Grazax every day for 3 years and then stopped. They still weren’t experiencing allergy symptoms at their follow-ups 2 years after stopping.

Grazax should be taken daily for the full 3 years to get the maximum benefit, not just during the allergy season.

Side effects of Grazax 75,000 SQ-T 30 Tablets

Grazax can cause side effects or allergic responses in some people, however not everyone will experience them. If you do, generally the effects last from minutes to hours after taking the tablets and settle down within one week of starting treatment.

Remember, you should already have taken your first dose under the supervision of your doctor or specialist and be familiar with any side effects.

However, you should stop taking Grazax and contact your doctor immediately if you:

  • Suffer from rapid swelling of the face, mouth or throat - this is an emergency, call 999

  • Have difficulties in swallowing or breathing - this is an emergency, call 999

  • Your voice changes

  • Your asthma worsens

  • You get severe discomfort, or you get hives

Very common side effects (may affect more than 1 in 10 people)

  • Swelling of mouth

  • Mouth or ear itching

  • Irritating sensation in the throat

Common side effects (may affect up to 1 in 10 people)

  • Prickling sensation or numbness of the mouth

  • Eye, lip or nose itching

  • Eye or mouth inflammation

  • Shortness of breath, cough or sneezing

  • Dry throat  

  • Runny nose

  • Swelling of eyes or lips

  • Mouth ulcers

  • Blistering pain or discomfort of mouth or throat

  • Stomach pain, diarrhoea, feeling sick, vomiting

  • Heartburn

  • Itching rash or nettle rash

  • Tiredness

  • Chest discomfort

  • Tightness of throat

  • Mouth redness

  • Difficulty in swallowing

This list isn’t exhaustive, and you should always read the Patient Information Leaflet that comes with your medication for a full list of possible side effects. A copy of this will also be in the medication packaging or box.

When not to take Grazax tablets

Don’t take Grazax tablets:

  • If you are allergic to any of the ingredients in the medicine

  • If you have an illness which affects the immune system

  • If you have severe asthma

  • If you have cancer or if you have a mouth inflammation which is severe

  • If you have recently had a tooth taken out or have had other forms of oral surgery, check with your doctor. Treatment with Grazax may be stopped for 7 days to allow the oral cavity to heal

Speak to your doctor before taking Grazax if you have a severe allergy to fish.

You should mention if you are taking any other medicines, including those obtained without a prescription. If you are taking other medicines for allergy symptoms, such as antihistamines or corticosteroids, you should speak to your doctor before taking Grazax.

You should not start treatment of Grazax during pregnancy, but if you fall pregnant during treatment, you should speak to your doctor about continuing treatment.

There is no experience with the use of Grazax during breastfeeding. No effects on breastfed infants are anticipated.

If you would like to talk to our Healthcare Advisors about any concerns around side-effects please call us on 01295 262925 or email help@oxfordop.co.uk

Frequently Asked Questions
Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Grazax 75,000 SQ-T 30 Tablets - Patient Information Leaflet

References
  1. GRAZAX 75,000 SQ-T oral lyophilisate - Summary of Product Characteristics (SmPC) - (emc) | 315 [Internet]. Medicines.org.uk. 2025.

  2. Grazax hay fever treatment - Overview [Internet]. Guy’s and St Thomas’ NHS Foundation Trust.

Message From Our Pharmacist

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Authored on May 22, 2025

Reviewed on May 22, 2025

Kiran Jones

Kiran Jones - MPharm, MRPharmS

Pharmacist / Medical Content Writer

GPhC Number: 2071585