Darvocet A500

Generic Name: Acetaminophen

  • What is Darvocet A500?

    Darvocet A500 contains two medicines, acetaminophen and propoxyphene, and is used to relieve mild to moderate pain.

  • What is the most important information I should know about Darvocet A500?

    There have been numerous cases of accidental and intentional overdose with Darvocet A500, either alone or in combination with other central nervous system depressants, including alcohol. Many of these deaths have occurred in patients with a history of emotional disturbances or suicidal tendencies. Talk to your doctor if you take antidepressants, muscle relaxants, sedatives, or tranquilizers.

    Darvocet A500 can cause your blood pressure to drop, which can make you feel dizzy and faint if you get up too fast from sitting or lying down. Low blood pressure is also more likely to happen if you take other medicines that can also lower your blood pressure. Severe low blood pressure can occur if you lose blood or take certain other medicines.

    Darvocet A500 contains acetaminophen. Acetaminophen can cause serious liver problems if you take more than the recommended dose. Do not take more Darvocet A500 than prescribed. Do not take any other medicines that contain acetaminophen while also taking Darvocet A500. Many products contain acetaminophen, such as many cold medicines, pain relievers, or fever reducing medicines. Ask your doctor or pharmacist if you are not sure.

    Darvocet A500 can cause sleepiness and may affect your ability to make decisions, think clearly, or react quickly. Do not drive, operate heavy machinery, or do other dangerous activities until you know how Darvocet A500 affects you.

    Darvocet A500 can cause physical dependence if you take it for more than a few weeks. Do not suddenly stop taking Darvocet A500. You could experience uncomfortable withdrawal symptoms (e.g., nausea, vomiting, diarrhea, anxiety and shivering) because your body has become used to the medicine. Talk to your doctor about slowly stopping Darvocet A500 to avoid withdrawal symptoms.

  • Who should not take Darvocet A500?

    Do not take Darvocet A500 if you are allergic to propoxyphene or acetaminophen, if you are having an asthma attack or have severe asthma, trouble breathing, or lung problems.

    Do not take Darvocet A500 if you have a bowel blockage called paralytic ileus, if you are depressed or suicidal, or have a history of suicidal ideation.

  • What should I tell my doctor before I take the first dose of Darvocet A500?

    Tell your doctor about all prescription, over-the-counter, and herbal medications you are taking before beginning treatment with Darvocet A500. Also, talk to your doctor about your complete medical history, especially if you have a history of head injury, drug or alcohol abuse or addiction, lung problems, such as chronic obstructive pulmonary disease or severe asthma, liver or kidney problems, or problems with your pancreas or gallbladder. It is especially important to talk to your doctor if you are >65 years old. Let your doctor know if you are planning to have surgery with general anesthesia or have a history of drug or alcohol abuse or addiction.

  • What is the usual dosage?

    The information below is based on the dosage guidelines your doctor uses. Depending on your condition and medical history, your doctor may prescribe a different regimen. Do not change the dosage or stop taking your medication without your doctor's approval.

    Adults: The usual dosage of Darvocet A500 is one tablet every 4 hours orally as needed for pain. The dose will be adjusted based on how you respond to the medicine.

  • How should I take Darvocet A500?

    Take Darvocet A500 exactly as prescribed. Do not change your dose or stop taking Darvocet A500 without first talking to your doctor.

    Do not take more than 6 tablets in 1 day. In the case of an overdose, call your doctor or emergency department immediately.

  • What should I avoid while taking Darvocet A500?

    Avoid alcohol while taking Darvocet A500.

    Avoid other narcotic pain medications. Taking a combination of pain medications may cause more side effects. Do not take more than prescribed.

    Avoid other medications that contain acetaminophen, such as Tylenol products or over-the-counter cold and cough preparations. Overdose may lead to liver damage.

    Do not drink grapefruit juice or eat grapefruit while you are taking Darvocet A500.

    The use of Darvocet A500 is not recommended for you if you are taking a monoamine oxidase inhibitor (MAOI) or have taken a MAOI in the past 14 days. Ask your pharmacist if any other drugs you may be taking are in this category.

  • What are possible food and drug interactions associated with Darvocet A500?

    If Darvocet A500 is taken with certain other drugs, the effects of either could be increased, decreased, or altered. It is especially important to check with your doctor before combining Darvocet A500 with the following: other narcotic pain medications, amiodarone, anti-anxiety medicines, anti-arrhythmics, antidepressants, antinausea medicines, birth control pills, blood pressure medicines, blood thinners, clarithromycin, ketoconazole, itraconazole, carbamazepine, diltiazem, erythromycin, fluconazole, grapefruit juice, lamotrigine, monoamine oxidase inhibitors (MAOIs), muscle relaxants, probenecid, sleeping pills, tranquilizers, verapamil, zidovudine.

  • What are the possible side effects of Darvocet A500?

    Side effects cannot be anticipated. If any develop or change in intensity, tell your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking this drug.

    Side effects may include: abdominal pain, constipation, dizziness, headache, lightheadedness, minor visual disturbances, nausea, skin rashes, sleepiness, vomiting, weakness

    Stop taking Darvocet A500 immediately and call your doctor if you have changes in blood pressure and heart rate, confusion, dizziness or fainting, loss of appetite, nausea, sedation, abdominal pain, trouble breathing or if you stop breathing.

  • Can I receive Darvocet A500 if I am pregnant or breastfeeding?

    The effects of Darvocet A500 on pregnancy are unknown, and it may pass into breast milk. Talk to your doctor if you are pregnant, planning to become pregnant or are breastfeeding. If you take Darvocet A500 regularly before your baby is born, your newborn baby may have withdrawal symptoms because his or her body has become used to the medicine.

  • What should I do if I miss a dose of Darvocet A500?

    If you missed a dose of Darvocet A500, take the dose as soon as possible unless it is almost time for the next dose. Do not take two doses at the same time.

  • How should I store Darvocet A500?

    Store at room temperature.

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