Micropirin enteric coated tablets contain the active ingredient acetylsalicylic acid, otherwise known as aspirin. (NB. Aspirin is also available without a brand name, ie as the generic medicine.)
Aspirin belongs to a group of medicines called non-steroidal anti-inflammatory drugs (NSAIDs). It works by blocking the action of a substance in the body called cyclo-oxygenase.
Cyclo-oxygenase is involved in the production of various chemicals in the body. These are known as prostaglandins, prostacyclins and thromboxane. By blocking the action of cylo-oxygenase, aspirin prevents the production of these chemicals.
Aspirin prevents blood cells called platelets from producing thromboxane. Thromboxane is one of the chemicals that causes platelets to clump together and start off the process of blood clotting. Stopping its production reduces the likelihood of clots forming in the blood.
A blood clot that forms inside the blood vessels is known as a thrombosis and can be dangerous, as it can cause a blockage that cuts off the blood supply to an organ. A blockage in the arteries supplying blood to the heart or brain can cause a heart attack or stroke.
Blood clots and blockages mainly result from a build up of atherosclerosis on the inside of blood vessels. Atherosclerosis is a build up of cholesterol and fat cells that narrows the blood vessels and makes their interiors rough and bumpy. This makes it more difficult for blood to flow through the vessels, and increases the likelihood of clots forming in the vessels. People with angina, or who have already suffered a heart attack or stroke, are at risk of having another because of the atherosclerosis in their arteries. Low dose aspirin is used to lower the risk of this.
High doses of aspirin (300mg and over) also prevent the production of prostaglandins. Prostaglandins are produced in response to injury or certain diseases and would otherwise go on to cause pain, swelling and inflammation. High doses of aspirin are therefore used to relieve pain and inflammation. See the factsheets linked at the end of this article for more information about this use of aspirin.
Aspirin is also used in the emergency situation of a heart attack. Anyone who has the symptoms of a heart attack (chest pain, possibly radiating towards the arm or neck, shortness of breath) should take one 300mg aspirin tablet as soon as possible, as this has been shown to increase the chances of surviving a heart attack. This is because the aspirin prevents the blood clot that is blocking the supply of blood to the heart from growing any bigger. The tablet can be crushed under the tongue for faster absorption into the bloodstream, as the area under the tongue is very rich in blood vessels.
This medicine should not be used if you are allergic to one or any of its ingredients. Please inform your doctor or pharmacist if you have previously experienced such an allergy.If you feel you have experienced an allergic reaction, stop using this medicine and inform your doctor or pharmacist immediately.
Certain medicines should not be used during pregnancy or breastfeeding. However, other medicines may be safely used in pregnancy or breastfeeding providing the benefits to the mother outweigh the risks to the unborn baby. Always inform your doctor if you are pregnant or planning a pregnancy, before using any medicine.
Medicines and their possible side effects can affect individual people in different ways. The following are some of the side effects that are known to be associated with this medicine. Just because a side effect is stated here does not mean that all people using this medicine will experience that or any side effect.
The side effects listed above may not include all of the side effects reported by the drug's manufacturer.For more information about any other possible risks associated with this medicine, please read the information provided with the medicine or consult your doctor or pharmacist.
If you are taking any other medicines you should check with your pharmacist before taking this one to ensure that the combination is safe.
People taking anticoagulant medicines used to prevent the blood clotting, eg warfarin, should not take aspirin to relieve pain or inflammation. This is because the higher doses of aspirin used for pain relief can irritate the stomach lining, as well as increasing the effects of warfarin, both of which increase the likelihood of bleeding. Lower doses of aspirin used for a blood-thinning effect are safer, but should only be used by people taking anticoagulants such as warfarin on the advice of a doctor.
There may be an increased risk of bleeding if aspirin is taken with other 'blood-thinning' (antiplatelet) medicines such as clopidogrel or dipyridamole.
Aspirin reduces the rate at which the body can remove the medicine methotrexate. The two should not usually be used together.
There is an increased risk of side effects if aspirin is taken with other non-steroidal anti-inflammatory drugs (NSAIDs), eg ibuprofen, diclofenac, indometacin. For this reason, aspirin should not be taken with any other NSAID. Low-dose aspirin used for anti-blood-clotting purposes is an exception to this, but should only be used with other NSAIDs on the instruction of a doctor.
There may be an increased risk of bleeding or ulceration of the stomach or intestines if aspirin is taken with corticosteroids, eg prednisolone, dexamethasone.
There may be an increased risk of side effects if aspirin is taken with acetazolamide.
Micropirin tablets have a special 'enteric coating' that is designed to stop the aspirin from irritating the stomach. Antacids (indigestion remedies) should not be taken at the same time of day as Micropirin tablets, because they allow this special coat to dissolve and thus stop it protecting the stomach.
|Angettes 75||Aspro clear||Caprin (300mg)|
|Caprin (75mg)||Disprin||Disprin direct|
|Maximum strength aspro clear||Nu-seals (300mg)||Nu-seals (75mg)|
Aspirin tablets, dispersible tablets, enteric-coated tablets and suppositories are also available without a brand name, ie as the generic medicine.