Boots Aspirin 300mg Tablets

Patient Leaflet Updated 23-Feb-2024 | THE BOOTS COMPANY PLC

Boots Aspirin 300 mg Tablets

Patient Information Leaflet for

Boots Aspirin 300 mg Tablets

Read this leaflet carefully before taking these tablets.

It does not contain all the information about your medicine that you may need to know, so ask your doctor or pharmacist if you have any questions.

This leaflet only applies to Aspirin 300 mg Tablets.


These tablets contain Aspirin, which is a type of painkiller. It is used to relieve pain, swelling and high temperature. It can be used to treat headaches, migraine, neuralgia, toothache, sore throat, period pains and for the relief of sprains, strains, rheumatic pain, sciatica, lumbago, muscle aches, fibrositis, joint swelling and stiffness.

Do not take these tablets if you:
  • Are allergic to Aspirin, NSAIDs which includes those when in attacks of asthma, angioedema, urticaria or rhinitis have been precipitated by aspirin or any other NSAID or any of the other ingredients listed in section 6
  • Have a stomach ulcer or have had problems with ulcers in the past.
  • Suffer from haemophilia or any other bleeding condition
  • Suffer from gout or had in the past
  • Are in the last 3 months of pregnancy or are breast feeding.

Important warning:

Do not give this medicine to children under the age of 16 unless your doctor tells you. This is because there is a possible association between Aspirin and Reye’s syndrome when given to children. Reye’s syndrome is a very rare disease, which can be fatal.

Take special care and tell your doctor if you:
  • Are intolerant to some sugars as these tablets contain lactose
  • Have asthma or have ever had it in the past
  • Have dehydration
  • Have been told you are deficient in glucose-6-phosphate dehydrogenase

Tell your doctor or pharmacist if you are already taking any of the following medicines, as their effectiveness may be influenced by aspirin if they are taken at the same time.
  • Metoclopramide (for sickness and digestive disorders)
  • Blood thinning medicines such as Heparin, Warfarin or nicoumalone
  • Corticosteroids e.g. hydrocortisone (which can be used for arthritis, asthma, and inflammatory conditions)
  • Anti-inflammatory medicines or steroids for pain and inflammation e.g. ibuprofen
  • High blood pressure medicines e.g diuretic/water tablets, Angio-II receptor antagonists or ACE inhibitors
  • Epilepsy medicines e.g. Phenytoin, Sodium valproate
  • Methotrexate (for psoriasis, arthritis or tumours)
  • Antacids for indigestion
  • Probenecid or sulphinpyrazone for gout
  • Anti depressants e.g. citalopram
    Before using aspirin inform your doctor about the medicines you are taking. If you are using aspirin regularly seek advice of your doctor before taking any other medicine (including other medicines that you have bought).

Pregnancy and breast-feeding

Ask your doctor or pharmacist for advice before taking this medicine. Aspirin should not be taken in the last three months of pregnancy. Do not take this medicine if you are breastfeeding.


Dosage in adults, the elderly and children over the age of 16 years:

Take 1 to 3 tablets with water, every 4 hours. Do not take more than 4 doses in any 24 hours. A lower dose is recommended for the elderly.

When taking this medicine, it is important to remember the following:

  • Do not give to children aged under 16 years unless told to by your doctor
  • Do not exceed the stated dose
  • Seek medical attention IMMEDIATELY if you accidentally take too many tablets
  • If you miss a dose, do not take a double dose to make up for the missed dose
  • If symptoms persist for more than 3 days consult your doctor


Most people will not have problems, but some may get some.

If you get any of these serious side effects, stop taking the tablets. See a doctor at once:

  • You are sick and it contains blood or dark particles that look like coffee grounds
  • Pass blood in your stools or pass black tarry stools
  • Stomach problems including pain, indigestion or heartburn
  • Allergic reactions such as skin rash, swelling of the face, neck or throat, worsening of asthma, difficulty in breathing
  • Bleeding on the brain which may cause a severe headache or stroke

These other effects are less serious.

If they bother you talk to a pharmacist:

  • Feeling sick, being sick, changes to the stomach lining (swelling or ulcers)
  • Increased bleeding time when you cut yourself, bleeding under the skin which may look like bruising
  • Nose bleeds (if a nose bleed is severe or lasts for a long time, talk to a doctor straight away)
  • Hearing problems (e.g. ringing in the ears), feeling dizzy (vertigo), feeling confused

Reporting of suspected adverse reactions

Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via the Yellow Card Scheme at


Keep your medicine in a safe place where children cannot see or reach it.

Do not store above 25°C.

Do not use this medicine after the expiry date printed on the packaging.


The active ingredient in these tablets is aspirin 300mg.

The inactive ingredients are potato starch, lactose, and talc.

MA Holder and manufacturer:
Aspar Pharmaceuticals Ltd
Albany House
Acrewood Way
St Albans


Aspar Pharmaceuticals Ltd
29-30 Capitol Way

The distributor is
The Boots Company PLC

Aspirin 300mg tablets are available in blister packs of 2, 4, 8, 12, 16, 24, 32, 48, 50, 96 or 100 tablets and they are also available in container packs of 8, 16, 24, 25, 32, 50, 100, 250, 500, 1000 or 5000 tablets (Not all pack sizes are marketed).

PL 08977/0002

Date of leaflet revision: August 2019

Artwork reference: A-BO300/4

Company Contact Details

1 Thane Road West, Beeston, Nottingham, NG2 3AA


+44 (0)1159 592 565


+44 (0)1159 595 165