Oxycodone is a semi-synthetic opioid prescribed for moderate to severe pain. It is the active ingredient in several widely used brand-name medications, including Percocet, OxyContin, and Roxicodone.1
Oxycodone relieves pain by acting on opioid receptors in the brain and nervous system, and it triggers a release of dopamine in the brain’s reward center. That is what makes it effective against pain and, at the same time, gives it a high potential for misuse, dependence, and addiction.2
Key Points
- Oxycodone is a semi-synthetic opioid and a Schedule II controlled substance with a high potential for addiction.
- Percocet, OxyContin, and Roxicodone all contain oxycodone but differ in formulation and added ingredients.
- OxyContin is an extended-release form, while Percocet pairs immediate-release oxycodone with acetaminophen.
- Regular use leads to physical dependence, and stopping suddenly causes withdrawal symptoms within a day.
- Most opioid overdoses involve slowed or stopped breathing, and naloxone (Narcan) can reverse them.
- Oxycodone addiction is treatable with medical detox, FDA-approved medications, therapy, and aftercare.
In This Article:
- What is oxycodone?
- Oxycodone vs. OxyContin, Percocet, and Roxicodone
- How oxycodone works and its side effects
- Oxycodone overdose and naloxone
- How long does oxycodone stay in your system?
- Oxycodone withdrawal
- Oxycodone addiction and treatment
- Oxycodone FAQs
What Is Oxycodone?
Oxycodone is a prescription opioid used to manage moderate to severe pain, including pain after surgery or injury and pain related to cancer. It is semi-synthetic, which means it is made in a lab from thebaine, a compound found in the opium poppy.1
Oxycodone was first synthesized in 1916 and has been used in medicine ever since.1 Today it comes in immediate-release forms that work quickly and wear off within a few hours, and extended-release forms that release the drug slowly to treat around-the-clock pain.
The U.S. Drug Enforcement Administration classifies oxycodone as a Schedule II controlled substance, the category for drugs that have accepted medical uses but also carry a high potential for abuse and dependence.1 On the street, oxycodone and its products go by names including oxy, OC, ox, roxy, and perc.1
Oxycodone vs. OxyContin, Percocet, and Roxicodone
Oxycodone is the active drug. OxyContin, Percocet, and Roxicodone are brand-name products that all contain oxycodone, but they differ in how the drug is released and whether a second ingredient is added.1
| Medication | What it is | Release | Other active ingredient | Typical pain relief |
|---|---|---|---|---|
| Oxycodone (generic) | The opioid drug itself, sold as a generic | Immediate-release or extended-release | None | About 4 to 6 hours (immediate-release) |
| OxyContin | Brand-name oxycodone | Extended-release | None | About 8 to 12 hours |
| Percocet | Brand-name combination product | Immediate-release | Acetaminophen | About 4 to 6 hours |
| Roxicodone | Brand-name oxycodone | Immediate-release | None | About 4 to 6 hours |
The practical differences come down to two things: how quickly the oxycodone is released, and what else is in the pill. Percocet adds acetaminophen, the pain reliever in Tylenol, which is why taking extra acetaminophen alongside it can put stress on the liver. OxyContin releases oxycodone slowly over many hours, so it is prescribed for steady, around-the-clock pain rather than short-term relief.
People often ask whether Percocet and oxycodone are the same. Percocet is oxycodone combined with acetaminophen, so it contains oxycodone but is not identical to the generic drug. Oxycodone is also sometimes confused with hydrocodone products such as Vicodin and Norco, but those contain a different opioid.
How Oxycodone Works and Its Side Effects
Oxycodone works by binding to opioid receptors in the brain and spinal cord, which blocks pain signals and triggers a release of dopamine. That dopamine response is part of why the drug can feel rewarding and why it can become habit-forming.2
Like all opioids, oxycodone can cause side effects. Some are common and mild, while others are serious. Common side effects include:
- Constipation, nausea, vomiting, or dry mouth
- Drowsiness, dizziness, or sedation
- Confusion or trouble concentrating
- Itching or skin rash
- Difficulty urinating
- Lower testosterone, reduced sex drive, or low energy with long-term use
- Tolerance, meaning a person needs more of the drug for the same effect, and physical dependence
Because oxycodone slows activity in the central nervous system, it can also slow breathing. At high doses, or when it is combined with alcohol or other sedatives, that effect can become life-threatening.2
Oxycodone Overdose and Naloxone
An oxycodone overdose is a medical emergency. The most dangerous sign is slowed or stopped breathing, and an overdose can be reversed with naloxone (sold as Narcan) if someone acts quickly.3
Warning signs of an opioid overdose include very small, pinpoint pupils, a person who cannot be woken or will not respond, slow or stopped breathing, gurgling or choking sounds, a limp body, and blue or gray lips, fingertips, or skin.
If you suspect an overdose, call 911 right away. Give naloxone if it is available; it is sold over the counter and is safe to use even if you are not certain opioids are involved. Try to keep the person breathing, and stay with them until help arrives.
Opioids were involved in about 76% of the roughly 105,000 U.S. drug overdose deaths recorded in 2023.3
Fewer than 1 in 5 people with opioid use disorder receive medications proven to treat it, such as methadone or buprenorphine.5
Opioids are involved in most U.S. overdose deaths. Illicitly manufactured fentanyl now drives the majority of those deaths, but prescription opioids like oxycodone still carry real overdose risk, especially when they are misused, taken in higher doses, or combined with alcohol or other depressants.3 Counterfeit pills made to look like real oxycodone are an added danger, because they may contain fentanyl. You can learn more about reducing these risks on our harm reduction page.
How Long Does Oxycodone Stay in Your System?
How long oxycodone stays in your system depends on the formulation and on individual factors such as metabolism, age, and kidney and liver health. As a general guide, oxycodone is detectable in urine for about one to three days, in saliva for one to two days, in blood for a few hours, and in hair for up to about 90 days.
Extended-release forms like OxyContin stay active in the body longer than immediate-release oxycodone or Percocet. For a full breakdown by drug test type and by product, see our detailed guide.
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Oxycodone Withdrawal
Once the body becomes physically dependent on oxycodone, cutting back or stopping can bring on withdrawal. The symptoms are rarely life-threatening on their own, but they are intensely uncomfortable and are a common reason people return to use.
Common withdrawal symptoms include muscle aches, abdominal cramps, nausea, diarrhea, sweating, chills, a runny nose, watery eyes, anxiety, trouble sleeping, and strong cravings. Symptoms usually begin within 8 to 24 hours of the last dose, peak around one to three days, and ease over about a week, though extended-release forms may start later. For the full timeline and how medical detox helps, see our guide to opioid withdrawal.
Oxycodone Addiction and Treatment
Oxycodone addiction is a treatable medical condition, not a failure of willpower. Effective treatment usually combines medical detox, FDA-approved medications, therapy, rehab, and long-term support.4
Signs of oxycodone addiction
Addiction, known clinically as opioid use disorder, shows up as a pattern of signs rather than a single symptom. Common signs include:
- Taking more oxycodone than prescribed, or taking it for longer than intended
- Strong cravings for the drug
- Needing higher doses to feel the same effect
- Withdrawal symptoms when not using
- Continuing to use despite problems with health, work, or relationships
Levels of care
Treatment for oxycodone addiction usually moves through several levels of care, matched to how severe the addiction is and whether other health conditions are present:
- Medical detox keeps a person safe and more comfortable while oxycodone leaves the body.
- Inpatient and residential rehab provides 24-hour care and structure, often right after detox.
- Outpatient programs, including partial hospitalization and intensive outpatient options, let people live at home while they receive treatment.
- Aftercare and ongoing support help maintain recovery and lower the risk of relapse.
Medication-assisted treatment
Medication-assisted treatment combines counseling with FDA-approved medications. For opioid use disorder, three medications are standard:5
- Methadone reduces cravings and withdrawal symptoms and is dispensed through licensed opioid treatment programs.
- Buprenorphine eases cravings and withdrawal while lowering overdose risk, and it is combined with naloxone in Suboxone.
- Naltrexone blocks the rewarding effects of opioids and is started after a person has fully detoxed.
Oxycodone FAQs
What is the difference between hydrocodone and oxycodone?
Both are opioids prescribed for pain, but they come from different sources. Hydrocodone is derived from codeine, while oxycodone is derived from thebaine. Both are effective, but oxycodone is generally considered more potent and carries a high potential for misuse.
What is the difference between tramadol and oxycodone?
Tramadol is a Schedule IV medication and is considered a weaker opioid. It also affects serotonin and norepinephrine, which can influence mood. Oxycodone is a Schedule II medication and is stronger, with a higher potential for dependence.
Can you take Tylenol with oxycodone?
Generic oxycodone does not contain acetaminophen, the active ingredient in Tylenol, so it is generally safe to take the two together.2 The important exception is combination products like Percocet, which already contain acetaminophen. Adding more Tylenol on top of those can exceed the safe daily limit for acetaminophen and harm the liver.
Is oxycodone an opioid, an opiate, or a narcotic?
Oxycodone is a semi-synthetic opioid. “Opioid” is the broad term for natural and lab-made drugs that act on opioid receptors, while “opiate” usually refers to substances that come directly from the poppy plant. “Narcotic” is a legal and everyday term for the same class of drugs.1
Does oxycodone make you sleepy?
Yes. Drowsiness and sedation are common side effects of oxycodone.2 It is not safe to drive or operate machinery while taking it, and people at risk of falls should use it under close supervision.
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References
- United States Drug Enforcement Administration. Oxycodone Drug Fact Sheet. DEA; 2025. https://www.dea.gov/sites/default/files/2025-01/Oxycodone-Drug-Fact-Sheet_0.pdf. Accessed June 2026.
- MedlinePlus. Oxycodone. U.S. National Library of Medicine; 2025. https://medlineplus.gov/druginfo/meds/a682132.html. Accessed June 2026.
- Centers for Disease Control and Prevention. About Overdose Prevention. CDC; 2026. https://www.cdc.gov/overdose-prevention/about/index.html. Accessed June 2026.
- Substance Abuse and Mental Health Services Administration. Treatment Options for Substance Use Disorder. SAMHSA; 2025. https://www.samhsa.gov/substance-use/treatment/options. Accessed June 2026.
- National Institute on Drug Abuse. Medications for Opioid Use Disorder. NIDA; 2025. https://nida.nih.gov/research-topics/medications-opioid-use-disorder. Accessed June 2026.
