Darvon, the brand name for propoxyphene, is a narcotic medication used to control mild to moderate pain. The medication is available by prescription only in a 65mg tablet form, and is administered as needed for pain. According to RxList.com, if Darvon is used for an extended period of time, the medicine may need to be slowly weaned to prevent withdrawal symptoms. As with all medicines, unwanted side effects may occur with the use of Darvon.
Common Side Effects
Depression to the central nervous system may occur while taking Darvon. Symptoms of this depression include drowsiness and sedation. Dizziness may occur, as well as nausea and vomiting. According to MedlinePlus, constipation, a skin rash and mood changes may happen after taking the medication.
Serious Side Effects
Darvon may cause suicidal thoughts, coma, cardiac arrest, confusion, difficulty breathing and convulsions. Additional severe side effects include death due to cardio-respiratory arrest and a dependence on the medication. Other symptoms that signify serious complications include pinpoint pupils in the eyes, a slowing down of the heartbeat, low blood pressure and cold, clammy skin.
Drug Dependence
Darvon is a narcotic medication, and dependence may occur for patients using the medicine for long periods of time. During use, a potential for abuse may also occur because a patient can build up a tolerance to the medicine. An increase in the prescribed dosage or taking the medicine for longer than prescribed may create a physical dependence on Darvon. Withdrawal symptoms include abdominal cramping, muscular pain, diarrhea, insomnia, irritability and a runny nose.
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