Generic Name: oxycodone and aspirin (Oral route)
AS-pir-in, ox-i-KOE-done hye-droe-KLOR-ide
Oxycodone hydrochloride/aspirin has the potential for addiction, abuse, and misuse, which can lead to overdose and death. Assess each patient's risk before prescribing, and monitor for development of these behaviors or conditions. Serious, life-threatening, or fatal respiratory depression may occur. Monitor closely, especially upon initiation or following a dose increase. Accidental ingestion of oxycodone hydrochloride/aspirin, especially in children, can result in fatal overdose of oxycodone hydrochloride. Prolonged use of oxycodone hydrochloride/aspirin during pregnancy can result in neonatal opioid withdrawal syndrome, which may be life-threatening if not recognized and treated. If opioid use is required for a prolonged period in a pregnant woman, advise the patient of the risk of neonatal opioid withdrawal syndrome and ensure that appropriate treatment will be available. Concomitant use or discontinuation of concomitantly used cytochrome P450 3A4 inhibitors and inducers may affect the plasma levels of oxycodone and lead to fatal respiratory depression, profound sedation, opioid toxicity, and/or opioid withdrawal. Monitor patients carefully when oxycodone hydrochloride/aspirin and cytochrome P450 3A4 inhibitors and inducers are concurrently used. Concomitant use of benzodiazepines and opioids may result in profound sedation, respiratory depression, coma, and death. Reserve concomitant prescribing for patients with inadequate alternative treatment options. Limit dosages and durations to the minimum required and follow patients for signs and symptoms of respiratory depression and sedation .
Medically reviewed on April 30, 2018.
Commonly used brand name(s)
In the U.S.
Available Dosage Forms:
Therapeutic Class: Opioid/Salicylate, Aspirin Combination
Pharmacologic Class: NSAID
Chemical Class: Salicylate, Aspirin
Uses For Endodan
Oxycodone and aspirin combination is used to relieve moderate to moderately severe pain. Oxycodone belongs to the group of medicines called narcotic analgesics (pain medicines). It acts on the central nervous system (CNS) to relieve pain.
Aspirin is used to relieve pain and reduce fever in patients. Aspirin belongs to the group of medicines known as salicylates and acts on the immune system to reduce inflammation. It is also known as an antiinflammatory analgesic.
When oxycodone is used for a long time, it may become habit-forming, causing mental or physical dependence. However, people who have continuing pain should not let the fear of dependence keep them from using narcotics to relieve their pain. Mental dependence (addiction) is not likely to occur when narcotics are used for this purpose. Physical dependence may lead to withdrawal side effects if treatment is stopped suddenly. However, severe withdrawal side effects can usually be prevented by gradually reducing the dose over a period of time before treatment is stopped completely.
This medicine is available only with your doctor's prescription.
Before Using Endodan
In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:
Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.
Appropriate studies have not been performed on the relationship of age to the effects of oxycodone and aspirin combination in the pediatric population. Because of aspirin's toxicity, use in children is not recommended. Do not give aspirin to a child who has chickenpox or flu symptoms, unless approved by a doctor. Aspirin can cause a life-threatening reaction called Reye syndrome.
Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of oxycodone and aspirin combination in the elderly. However, elderly patients are more likely to have age-related liver, kidney, or lung problems, which may require caution and an adjustment in the dose for patients receiving oxycodone and aspirin combination.
There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.
Interactions with Medicines
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.
- Influenza Virus Vaccine, Live
Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
- Alipogene Tiparvovec
- Alteplase, Recombinant
- Amtolmetin Guacil
- Chloral Hydrate
- Choline Salicylate
- Dabigatran Etexilate
- Eslicarbazepine Acetate
- Ethacrynic Acid
- Flufenamic Acid
- Mefenamic Acid
- Methylene Blue
- Morphine Sulfate Liposome
- Niflumic Acid
- Nimesulide Beta Cyclodextrin
- Nitrous Oxide
- Opium Alkaloids
- Pentosan Polysulfate Sodium
- Protein C
- Reteplase, Recombinant
- Salicylic Acid
- Sodium Oxybate
- Sodium Salicylate
- Tenofovir Disoproxil Fumarate
- Tiaprofenic Acid
- Tolfenamic Acid
- Tolonium Chloride
- Varicella Virus Vaccine, Live
Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
- Enalapril Maleate
- St John's Wort
- Valproic Acid
Interactions with Food/Tobacco/Alcohol
Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using this medicine with any of the following is usually not recommended, but may be unavoidable in some cases. If used together, your doctor may change the dose or how often you use this medicine, or give you special instructions about the use of food, alcohol, or tobacco.
- Grapefruit Juice
Using this medicine with any of the following may cause an increased risk of certain side effects but may be unavoidable in some cases. If used together, your doctor may change the dose or how often you use this medicine, or give you special instructions about the use of food, alcohol, or tobacco.
Other Medical Problems
The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:
- Addison disease (adrenal gland problem) or
- Alcohol abuse, or history of or
- Bleeding problems or
- Brain tumor, history of or
- Chronic obstructive pulmonary disease (COPD) or
- Cor pulmonale (serious heart condition) or
- Drug dependence, especially with narcotics, or history of or
- Gallbladder disease or gallstones or
- Head injury, history of or
- Hypothyroidism (an underactive thyroid) or
- Hypovolemia (low blood volume) or
- Kyphoscoliosis (curvature of the spine with breathing problems) or
- Peptic ulcer disease, active or history of or
- Problems with passing urine or
- Prostatic hypertrophy (enlarged prostate, BPH) or
- Vitamin K deficiency—Use with caution. May increase risk for more serious side effects.
- Hemophilia or
- Lung disease or breathing problems (eg, respiratory depression), severe or
- Stomach or bowel blockage (eg, paralytic ileus) or
- Viral infection—Should not be used in patients with these conditions.
- Hypotension (low blood pressure) or
- Pancreatitis (inflammation of the pancreas) or
- Seizures, history of—Use with caution. May make these conditions worse.
- Kidney disease or
- Liver disease—Use with caution. The effects may be increased because of slower removal of the medicine from the body.
Proper Use of oxycodone and aspirin
This section provides information on the proper use of a number of products that contain oxycodone and aspirin. It may not be specific to Endodan. Please read with care.
Take this medicine only as directed by your doctor. Do not take more of it, do not take it more often, and do not take it for a longer time than your doctor ordered. This is especially important for elderly patients, who may be more sensitive to the effects of pain medicines. If too much of this medicine is taken for a long time, it may become habit-forming (causing mental or physical dependence).
This medicine should come with a Medication Guide. Read and follow the instructions carefully. Ask your doctor if you have any questions.
The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.
The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.
- For oral dosage form (tablets):
- For moderate to moderately severe pain:
- Adults—One tablet every 6 hours as needed. Your doctor may adjust your dose if needed. However, the dose is usually not more than 12 tablets per day.
- Children—Use and dose must be determined by your doctor.
- For moderate to moderately severe pain:
If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.
Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.
Keep out of the reach of children.
Do not keep outdated medicine or medicine no longer needed.
Ask your healthcare professional how you should dispose of any medicine you do not use.
Store the medicine in a safe and secure place. Do not throw unused medicine in the trash. Ask your pharmacist about the best way to dispose of medicine you do not use.
Precautions While Using Endodan
It is very important that your doctor check your progress while you are taking this medicine. This will allow your doctor to see if the medicine is working properly and to decide if you should continue to take it.
Using this medicine while you are pregnant can harm your unborn baby. Use an effective form of birth control to keep from getting pregnant. If you think you have become pregnant while using the medicine, tell your doctor right away.
Check with your doctor before using Percodan® with alcohol or other medicines that affect the central nervous system (CNS). The use of alcohol or other medicines that affect the CNS with Percodan® may worsen the side effects of this medicine, such as dizziness, poor concentration, drowsiness, unusual dreams, and trouble with sleeping. Some examples of medicines that affect the CNS are antihistamines or medicine for allergies or colds, sedatives, tranquilizers, or sleeping medicines, medicine for depression, medicine for anxiety, prescription pain medicine or narcotics, medicine for attention deficit and hyperactivity disorder, medicine for seizures or barbiturates, muscle relaxants, or anesthetics, including some dental anesthetics.
Do not use more of this medicine or take it more often than your doctor tells you to. This can be life-threatening. Symptoms of an overdose include extreme dizziness or weakness, slow heartbeat or breathing, seizures, trouble breathing, and cold, clammy skin. Call your doctor right away if you notice these symptoms.
This medicine may be habit-forming. If you feel that the medicine is not working as well, do not use more than your prescribed dose. Call your doctor for instructions.
Dizziness, lightheadedness, or fainting may occur when you get up suddenly from a lying or sitting position. Getting up slowly may help lessen this problem. Also, lying down for a while may relieve the dizziness or lightheadedness.
This medicine may make you dizzy, drowsy, or lightheaded. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are dizzy or not alert.
Using narcotics for a long time can cause severe constipation. To prevent this, your doctor may direct you to take laxatives, drink a lot of fluids, or increase the amount of fiber in your diet. Be sure to follow the directions carefully, because continuing constipation can lead to more serious problems.
Check with your doctor right away if you have the following symptoms while using this medicine: acid or sour stomach, bloody or black, tarry stools, heartburn, nausea, vomiting, stomach pain, or vomiting of blood or material that looks like coffee grounds.
This medicine may cause a serious type of allergic reaction called anaphylaxis. Anaphylaxis can be life-threatening and requires immediate medical attention. Call your doctor right away if you have a rash, itching, hoarseness, trouble breathing, trouble swallowing, or any swelling of your hands, face, or mouth while you are using this medicine.
Using this medicine while you are pregnant may cause neonatal withdrawal syndrome in your newborn babies. Tell your doctor right away if your baby has an abnormal sleep pattern, diarrhea, a high-pitched cry, irritability, shakiness or tremors, weight loss, vomiting, or fails to gain weight.
Check with your doctor right away if you have anxiety, restlessness, a fast heartbeat, fever, sweating, muscle spasms, twitching, nausea, vomiting, diarrhea, or see or hear things that are not there. These may be symptoms of a serious condition called serotonin syndrome. Your risk may be higher if you also take certain other medicines that affect serotonin levels in your body.
Using too much of this medicine may cause infertility (unable to have children). Talk with your doctor before using this medicine if you plan to have children.
Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.
Endodan Side Effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:Incidence not known
- Abdominal pain, cramping, or tenderness
- bleeding gums
- blood in the urine or stools
- bloody, black, or tarry stools
- blue lips, fingernails, or skin
- blurred vision
- burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
- change in consciousness or confusion
- chest pain or discomfort
- clay-colored stools
- coughing or vomiting blood
- dark-colored urine
- decrease in urine volume or frequency
- decreased appetite
- difficult, fast, noisy breathing, sometimes with wheezing
- difficulty in passing urine (dribbling)
- dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
- dry mouth
- fast, slow, irregular, pounding, or racing heartbeat or pulse
- feeling of hostility or irritability
- feeling of warmth
- feeling that something terrible will happen
- headache, sudden, severe
- hives, itching, or skin rash
- increased menstrual flow or vaginal bleeding
- increased sweating
- irregular, fast, slow, or shallow breathing
- large, flat, blue or purplish patches in the skin
- large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
- loss of consciousness
- muscle cramping, weakness, or tremors
- muscle pain or stiffness
- nausea or vomiting
- numbness or tingling in the hands, feet, or lips
- painful or difficult urination
- pains in the stomach, side, or abdomen, possibly radiating to the back
- pale skin
- pinpoint red or purple spots on the skin
- prolonged bleeding from cuts
- puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
- red or black, tarry stools or dark urine
- sunken eyes
- swelling of face, ankles, hands, feet, or lower legs
- tightness in the chest
- unusual bleeding or bruising
- unusual tiredness or weakness
- vomiting of material that looks like coffee grounds, severe and continuing
- weak or feeble pulse
- weakness or heaviness of the legs
- weight gain
- wrinkled skin
- yellow eyes or skin
Get emergency help immediately if any of the following symptoms of overdose occur:Symptoms of overdose
- Continuing ringing or buzzing or other unexplained noise in the ears
- decreased awareness or responsiveness
- enlarged pupils
- extremely high fever or body temperature
- fast, weak heartbeat
- hearing loss
- increase in heart rate
- severe sleepiness
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:More common
- Relaxed and calm feeling
- bloated, full feeling
- blurred or loss of vision
- change in color perception
- cold sweats
- constricted, pinpoint, or small pupils (black part of the eye)
- cool, pale skin
- double vision
- excess air or gas in the stomach
- false or unusual sense of well-being
- flushed, dry skin
- fruit-like breath odor
- halos around lights
- increased hunger or thirst
- increased urination
- lack or loss of strength
- night blindness
- overbright appearance of lights
- red eyes
- redness of the skin
- seeing, hearing, or feeling things that are not there
- sleepiness or unusual drowsiness
- slurred speech
- trouble sleeping
- tunnel vision
- unusual drowsiness, dullness, tiredness, weakness, or feeling of sluggishness
- weight loss
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
See also: Side effects (in more detail)
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
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More about Endodan (aspirin / oxycodone)
- Endodan Side Effects
- During Pregnancy
- Dosage Information
- Drug Images
- Drug Interactions
- Support Group
- 0 Reviews – Add your own review/rating
- Drug class: narcotic analgesic combinations
Other brands: Percodan