The T 193 imprint identifies a combination prescription pain medication containing Oxycodone Hydrochloride (7.5 mg) and Acetaminophen (325 mg). Distributed by Camber Pharmaceuticals, Inc., this drug belongs to the combination narcotic analgesic class and is categorized as a Schedule II controlled substance in the United States due to its significant potential for abuse, physical dependence, and addiction.
Physical Identification
Physical Characteristic – Specification
- Active Ingredients – Oxycodone Hydrochloride (7.5 mg) + Acetaminophen (325 mg)
- Form – Solid oral tablet
- Shape – Capsule / Oblong
- Color – White to off-white
- Imprint – T 193 debossed on one side, plain on the reverse
- Drug Class – Opioid / Non-opioid Analgesic Combination
- CSA Schedule – Schedule II (Controlled Substance)
- If you hold a pill with a different shape or imprint code, do not assume it contains oxycodone and acetaminophen. Consult a pharmacist for visual verification.
Mechanism of Action
The T 193 tablet combines two distinct pain-relieving agents that work via complementary pathways to manage moderate-to-severe pain:
Oxycodone Hydrochloride (Opioid Analgesic)
- Receptor Agonism: Oxycodone is a semi-synthetic opioid that selectively binds to opioid receptors located throughout the central nervous system (CNS) and gastrointestinal tract.
- Signal Inhibition: Binding inhibits presynaptic neurotransmitter release and hyperpolarizes postsynaptic neurons, effectively blocking ascending pain signals along the spinal cord to the brain.
- CNS Perception: Alters the emotional response and perception of pain in the brain.
Acetaminophen (Non-Opioid Analgesic / Antipyretic)
- Prostaglandin Inhibition: Acetaminophen acts primarily in the central nervous system by inhibiting cyclooxygenase (COX) enzymes, reducing the synthesis of pain-inducing prostaglandins.
- Synergistic Effect: Enhances the analgesic action of oxycodone without adding opioid-related respiratory or sedative side effects, allowing for adequate pain relief at lower individual doses.
Indications & Clinical Usage
Oxycodone/Acetaminophen 7.5 mg/325 mg is indicated for the management of acute, severe pain in adults where alternative treatments (e.g., non-opioid analgesics or combination products) are inadequate or not tolerated.
- Important Usage Limits: Due to the risks of addiction, abuse, and misuse, it should only be prescribed for short durations unless managed under strict chronic pain protocols.
Dosage Guidance
Dosing must be strictly tailored to the severity of pain, individual response, and patient risk factors for opioid toxicity.
- Standard Adult Dosing: 1 tablet taken orally every 6 hours as needed for pain.
- Maximum Daily Dose Limits:
- Acetaminophen Limit: Do not exceed 4,000 mg of acetaminophen per day from all sources (including OTC drugs like Tylenol or cold medicines). Exceeding this limit causes severe liver damage.
- Opioid Titration: Doses should be kept to the lowest effective level for the shortest necessary duration.
Side Effects
Common Side Effects
- Central Nervous System: Drowsiness, sedation, dizziness, lightheadedness, and headache.
- Gastrointestinal: Nausea, vomiting, severe constipation, dry mouth, and abdominal pain.
- Skin/General: Itching (pruritus), sweating, or feeling faint upon standing.
Serious & Severe Adverse Effects
- Respiratory Depression: Unusually slow, shallow, or difficult breathing.
- Severe Hypotension: Significant drops in blood pressure, leading to fainting or collapse.
- Hepatotoxicity: Signs of liver toxicity (yellowing of skin/eyes, dark urine, upper right stomach pain).
- Adrenal Insufficiency: Long-term use can cause fatigue, weakness, anorexia, and low blood pressure.
- Serotonin Syndrome: High risk when taken alongside serotonergic drugs, leading to agitation, high fever, or rapid heart rate.
Precautions & Boxed Warnings
FDA Boxed Warnings (Black Box)
- Addiction, Abuse, and Misuse: Risk of opioid use disorder, overdose, and death.
- Life-Threatening Respiratory Depression: Can occur even when used as directed; highest risk during initiation or dose increases.
- Accidental Ingestion: Fatal to children or non-prescribed individuals.
- Neonatal Opioid Withdrawal Syndrome (NOWS): Prolonged use during pregnancy can cause life-threatening withdrawal in the newborn.
- Hepatotoxicity: Acetaminophen is linked to acute liver failure, sometimes requiring liver transplant or causing death.
- Risks from Concomitant Use with Benzodiazepines: Combining opioids with benzodiazepines, central nervous system depressants, or alcohol causes profound sedation, coma, and fatal respiratory failure.
Precautions
- Avoid Alcohol Entirely: Consuming alcohol with T 193 accelerates opioid absorption (“dose dumping”) and dramatically increases the risk of fatal overdose and liver injury.
- Discontinuation: Do not stop taking this medication abruptly after prolonged use. Sudden cessation causes severe opioid withdrawal (tremors, vomiting, anxiety, sweating, muscle cramps). Always taper off gradually under medical supervision.
- Driving and Machinery: Do not operate vehicles or dangerous machinery while taking this medication.