Drugs that shrink the swollen membranes in the nose and make it easier to breath. Decongestants can be taken orally or by nasal spray. Decongestant nasal spray should not be used for more than five days without the doctor s advice, and if so, usually only when accompanied by a nasal steroid. Many decongestant nasal sprays often cause a rebound effe...
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http://www.encyclo.co.uk/local/20973
Decongestants open nasal passages temporarily, dry up mucus, and constrict blood vessels in the lining of the nose. If overused, they can produce an increase in swelling and more congestion. In some people they can increase heart rate, cause sleeplessness, and elevate blood pressure.
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http://www.probertencyclopaedia.com/browse/ED.HTM
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