Darvon is a Propoxyphene drug taken for relieving mild to moderate pain. Overdose of propoxyphene can cause breathing problem or drowsiness. It can be fatal if taken with alcohol or antidepressants. The most severe result can be death of the patient.

Use of Darvon can result in many side effects such as nausea, vomiting, constipation, light headedness, dizziness, drowsiness, or headache. It is advisable to consult a doctor if of the mentioned side effect is noticed. Some patients have experienced fast/irregular heartbeat, severe dizziness, fainting, seizure, slow/shallow breathing, and unusual drowsiness/difficulty waking up as side effects of using Darvon. There can be some allergic reactions too such as rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

Call your doctor if you have any of these serious side effects: – shallow breathing, slow heartbeat; feeling light-headed, fainting; confusion, hallucinations, unusual thoughts or behavior; seizure (convulsions); or jaundice (yellowing of the skin or eyes) after use of Darvon. Other side effects of Darvon are feeling dizzy or drowsy; nausea, vomiting, stomach pain, constipation; headache, muscle pain; blurred vision; or mild skin rash.

There are now proven evidences that propoxyphene can cause serious disturbances to the heart’s electrical rhythm. Studies were conducted in this regard after consumer groups have pleaded for the drug’s ban over its sever side effect as heart ailments. This lead to a ban of Propoxyphene drugs Darvon and Darvocet produced by Xanodyne Pharmaceuticals. The Food and Drug Administration (FDA) banned these drugs and called for its withdrawal from the market.

Propoxyphene, which is most widely known as Darvon or Darvocet, is a medication classified as both an analgesic and narcotic. It has low efficiency rate and high probability to cause addiction and tolerance. It has proved to cause serious heart problems. This has stirred people using Darvon around the world.

Kristine Esposito from Queens, New York, a 31-year-old lady has filed a lawsuit against Xanodyne Pharmaceuticals, accusing the company that the drug caused a fatal blow to her heart. Because of this, she had to be on lifetime medications with frequent medical assessment. There are many such cases in open now. Different studies done on this regard support the claim. They confirm that this drug can cause dangerous alteration in the heart’s rhythm, which can lead to stroke, cardiac depression or sudden death.

The US Drug Watchdog says, “Darvocet, Darvon, and Propoxyphene are perhaps the most prescribed pain pills in history, and they may also be the deadliest. Most US citizens do not know these drugs could have contributed to a heart attack, severe heart rhythm issues, the need to control their heart beat with medication, or a pacemaker to normalize their heart’s rhythm.” They have found that use of Darvon can lead to Heart Arrhythmia, Heart Attack, Suicide, and Sudden Death. Some victim now has a Pacemaker because of serious heart rhythm issues and some of the victim now has to take heart medications to control their heart’s rhythm, for the rest of their lives.