Calpol infant suspension, six plus suspension, suspension sachets and fastmelts all contain the active ingredient paracetamol, which is a simple painkilling medicine used to relieve mild to moderate pain and fever. (NB. Paracetamol is also available without a brand name, ie as the generic medicine.
Despite its widespread use for over 100 years, we still don't fully understand how paracetamol works to relieve pain and reduce fever. However, it is now thought that it works by reducing the production of prostaglandins in the brain and spinal cord.
Prostaglandins are produced by the body in response to injury and certain diseases. One of their actions is to sensitise nerve endings, so that when the injury is stimulated it causes pain (presumably to prevent us from causing further harm to the area). As paracetamol reduces the production of these nerve sensitising prostaglandins it is thought it may increase our pain threshold, so that although the injury remains, we can feel it less.
It is thought paracetamol reduces fever by affecting an area of the brain that regulates our body temperature (the hypothalamic heat-regulating center).
Paracetamol is about as effective as aspirin at relieving mild to moderate pain and reducing fever, but unlike aspirin it has no anti-inflammatory effect.
Paracetamol can be used to relieve mild to moderate pain associated with conditions such as headaches, toothache, teething, colds and flu. It is also useful for reducing fever and discomfort associated with colds and flu and following vaccinations.
Calpol preparations contain children's doses of paracetamol. Calpol fastmelts are tablets that disperse on the tongue to form a paste that can be swallowed without the need for water, although they can also be dispersed in a teaspoonful of water or milk.
This medicine should not be used if your child is allergic to one or any of its ingredients. Please inform your doctor or pharmacist if your child has previously experienced such an allergy.If you feel your child has 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 children 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 medicine'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.
You should not give your child other medicines that contain paracetamol in combination with this medicine, as this can easily result in exceeding the maximum recommended daily dose of paracetamol. Many cold and flu remedies and over-the-counter painkillers contain paracetamol, so be sure to check the ingredients of any other medicines before giving them in combination with this one, or ask your pharmacist for advice.
Cholestyramine reduces the absorption of paracetamol from the gut. It should not be taken within an hour of taking paracetamol or the effect of the paracetamol will be reduced.
Metoclopramide and domperidone may increase the absorption of paracetamol from the gut.
Long-term or regular use of paracetamol may increase the anti-blood-clotting effect of warfarin and other anticoagulant medicines, leading to an increased risk of bleeding. Regular monitoring of blood clotting times should be performed if paracetamol is used regularly with these medicines. This effect does not occur with occasional pain-killing doses.
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Paracetamol tablets, capsules, caplets, soluble tablets, suspension and suppositories are also widely available without brand names, ie as the generic medicine.
The quantity and strength of paracetamol supplied in the container or packet will determine whether it can be bought only from pharmacies, or from other retail outlets such as supermarkets and garages.
NB. Paracetamol is known as acetaminophen in the USA and some other countries.