Most people do not suffer from any side effects from aspirin. Sometimes side effects such as nausea, stomach pain and indigestion are experienced. If the aspirin is taken alongside food, these side effects are less likely to appear.

Some more serious side effects may occur in rare cases. These include bleeding in the intestines or stomach and ulceration. Such side effects are more common in elderly people than younger people. If you experience blood in vomit or stools after using this medicine, stop using it immediately and consult a doctor.

If you feel the need to use Disprin for more than three days, consult with a doctor or pharmacist first.

Avoid taking painkillers for headaches too often, as this can make the headaches worse.

Aspirin should only be given to children under 16 years old if prescribed by a doctor. Use of aspirin in children has been linked to a condition called Reye's syndrome, which while rare, can prove fatal. The exact cause of Reye's syndrome is unknown, but it appears to be associated with the use of aspirin in children with a virus. For children under 16, there are plenty of paracetamol and ibuprofen products that have no association with Reye's syndrome to use.

Aspirin may have harmful effects on the baby, and can cause a delayed or prolonged labour. Consult with a doctor before taking aspiring at any stage of pregnancy, and never use aspirin during the third trimester.

Aspirin in significant quantities can pass into breast milk and cause harm to a nursing child. Consult with a doctor before using aspiring while breastfeeding.

Consult with a doctor or pharmacist before using aspirin alongside other medicines, including herbal and non-prescription medicines.If aspirin is taken alongside other medicines that increase the risk of bleeding, there may be an increased risk of bleeding.

You should not take aspirin alongside the medicine methotrexate, as aspiring reduces the body's ability to remove methotrexate.

If aspirin is taken alongside acetazolamide or loop diuretics (suc as furosemide or bumetanide), there can be an increased risk of experiencing side effects.

Aspirin can have the effect of reducing the absorption of vitamin C in the gut.