Roxicodone (Immediate-Release Oxycodone) - Prices & Where to Buy

What Is Roxicodone?

Roxicodone is the brand name for immediate-release oxycodone, a potent opioid analgesic belonging to the opioid agonist class. Oxycodone is one of the most commonly prescribed opioid pain medications in the United States.

Unlike OxyContin, which is the extended-release formulation of oxycodone, Roxicodone is designed to release the full dose immediately upon ingestion, providing rapid pain relief. It is typically used for acute pain management where fast onset of action is needed.

Roxicodone is designated as a Schedule II controlled substance under the federal Controlled Substances Act, indicating a high potential for abuse that may lead to severe psychological or physical dependence.

How Roxicodone Works

Oxycodone works by binding to mu-opioid receptors in the central nervous system (CNS). These receptors are distributed throughout the brain, spinal cord, and peripheral tissues, and play a key role in pain modulation.

When oxycodone binds to mu-opioid receptors, it activates them, producing analgesia, euphoria, sedation, and respiratory depression. The activation of these receptors inhibits ascending pain pathways and alters the perception of pain.

Immediate-release oxycodone has a rapid onset of action (approximately 15 to 30 minutes) and a half-life of approximately 3 to 5 hours. Effects typically last 3 to 6 hours, making it suitable for acute pain management.

FDA Schedule & Classification

FDA-Approved Uses

Oxycodone is FDA-approved for the management of moderate to severe pain where the use of an opioid analgesic is appropriate.

• Post-surgical pain: Rapid relief following surgical procedures
• Acute pain: Pain from injuries, fractures, or medical conditions requiring immediate analgesia
• Cancer pain: May be used for breakthrough cancer pain
• Severe chronic pain: When non-opioid medications are insufficient (typically reserved for severe cases)

Roxicodone is intended for short-term use when possible. Opioid use disorder risk increases with duration of therapy. The CDC recommends that when opioids are used for acute pain, the duration should generally be limited to 3 days or less.

Dosage Forms & Strengths

Immediate-Release Tablets

The usual starting dose for opioid-naive adults is 5 to 15 mg every 4 to 6 hours as needed for pain. The dose should be titrated based on the patient's analgesic response and side effect profile. The maximum recommended daily dose should be individualized based on the severity of pain and the patient's clinical response.

Elderly patients and those with hepatic or renal impairment may require lower starting doses with slower titration.

Side Effects

Common Side Effects

• Constipation — the most common side effect
• Nausea and vomiting — especially when initiating therapy
• Dizziness
• Headache
• Drowsiness and sedation
• Pruritus (itching)
• Dry mouth
• Excessive sweating
• Lightheadedness
• Weakness

Serious Side Effects

Contact your healthcare provider or seek emergency medical attention if you experience:

• Respiratory depression — slow, shallow, or difficulty breathing; the primary cause of opioid-related death
• Severe allergic reaction (anaphylaxis)
• Severe hypotension
• Adrenal insufficiency
• Serotonin syndrome — agitation, hallucinations, rapid heart rate, fever
• QT prolongation — irregular heartbeat

Drug Interactions

Major Interactions (Avoid or Use Extreme Caution)

• Other opioids — concurrent use increases risk of respiratory depression and death
• Benzodiazepines — profound sedation and respiratory depression; FDA black box warning
• Alcohol — significantly increases sedation and respiratory depression risk
• MAO inhibitors — potentially fatal interactions; avoid concomitant use
• Serotonergic drugs (SSRIs, SNRIs, triptans) — risk of serotonin syndrome
• CYP3A4 inhibitors (ketoconazole, erythromycin, ritonavir) — may increase oxycodone levels significantly

Moderate Interactions (Monitor Closely)

• Anticholinergic drugs — additive constipation and urinary retention
• St. John's Wort — may decrease oxycodone effectiveness
• Mixed agonist-antagonist opioids (buprenorphine, nalbuphine) — may reduce analgesic effect

Precautions & Warnings

• Pregnancy: May cause neonatal opioid withdrawal syndrome. Prolonged use during pregnancy can result in life-threatening withdrawal symptoms in the neonate.
• Breastfeeding: Opioids are excreted in breast milk and can cause serious adverse effects in breastfed infants. Breastfeeding is generally not recommended.
• Elderly patients: Increased sensitivity to opioids. Start at lower doses and titrate slowly.
• Liver disease: Oxycodone is metabolized by CYP3A4 and CYP2D6. Hepatic impairment can significantly increase drug levels.
• Kidney disease: Active metabolites may accumulate. Use with caution and dose adjustment.
• Respiratory conditions: Use extreme caution in patients with COPD, asthma, or sleep apnea.
• History of substance use disorder: Increased risk of misuse. Use with caution and close monitoring.
• Driving and machinery: Do not drive or operate heavy machinery until you know how this medication affects you.
• Opioid Overdose Risk: Have naloxone (Narcan) available. Educate family members on recognizing signs of overdose.

When to Contact a Clinician

• Pain is not improving or is worsening after starting the medication
• You notice new or unexpected side effects
• You feel you need to take more medication to achieve the same effect (tolerance)
• You are having difficulty functioning at work or home due to sedation
• You are experiencing mood changes, depression, or thoughts of self-harm
• You are pregnant or planning to become pregnant
• You have questions about how long you should take this medication
• You want to stop the medication — never stop abruptly without medical guidance

Seek emergency care immediately if you experience seizures, difficulty breathing, severe allergic reaction, loss of consciousness, or symptoms of overdose.