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Adverse Drug Reactions

Medicines and drugs are prescribed by your doctor to treat and manage illness and disease. Sometimes, medications do not work the way they are supposed to and can cause problems. An adverse drug reaction is defined as a harmful or unintended reaction to a drug that is prescribed to you by a doctor in the correct amount and taken in the right way. Adverse drug reactions are quite common. A French study of 2067 adults reported that 14.7% experienced drug reactions to one or more drugs (Vervloet and Durham, 1998). Fatal drug reactions occur in only 0.1% of medical inpatients. The drugs which are usually responsible are antibiotics non-steroidal anti-inflammatories (NSAIDs), and neuroleptics.

Anyone can experience an adverse drug reaction. People who take more than three or four medications everyday are more likely to have an adverse drug reaction. This is because there is a higher likelihood of interferences between drugs causing ineffectiveness or harmful reactions. It is a good idea to work with your family doctor to try to limit the medications you are on at one time. If you have more than one doctor, make sure that you tell each of your doctors about all the medicines that you are taking. It is a good idea to try to only go to one drug store so that your pharmacist gets to know you and all of the medicines that you take. Medicines that do not need a prescription , such as vitamins, health food products and herbs can also adverse reactions, so tell your doctor or pharmacist if you are using these as well. Make sure that you never take old medicines, even those you have used before. Just because you did not have an adverse reaction then, does not mean you will not have one now. Never use medicines that were prescribed for a friend or relative. You may be on a different combination of drugs that could cause an adverse reaction. Or you may react differently to the medicine than the other person did.

Be aware of changes in your body and tell your family doctor if there is any change in symptoms. Common adverse drug reactions are skin rash, easy bruising, bleeding, severe nausea and vomiting, diarrhea , constipation , confusion and breathing difficulties. Reactions can be immediate, accelerated, which occurs within three days, or late-occurring which occurs after more than three days of using the drug. The most common adverse reaction is a rash. Adverse drug reactions occur most often in young and middle aged adults, and are twice as common in women. Asthma and pregnancy can cause even greater adverse reactions to drug. If you experience what you think to be an adverse drug reaction, go immediately to your family doctor. They may tell you to stop taking the medication so that the reaction will go away by itself. The doctor may prescribe a different medication to treat the reaction. Always make sure you talk to your doctor first before stopping a medication. Never stop taking it on you own.

 

See Also:
About Dementia > Treatments for Dementia > Neuroleptics
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Last updated August 20, 2007
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