Pethidine

Addiction, Abuse, and Misuse

Because the use of Meperidine hydrochloride tablets exposes patients and other users to the risks of opioid addiction, abuse, and misuse, which can lead to overdose and death, assess each patient's risk prior to prescribing and reassess all patients regularly for the development of these behaviors and conditions [see Warnings and Precautions (5.2)].

Life-Threatening Respiratory Depression

Serious, life-threatening, or fatal respiratory depression may occur with use of Meperidine hydrochloride tablets, especially during initiation or following a dosage increase. To reduce the risk of respiratory depression, proper dosing and titration of meperidine hydrochloride tablets are essential [see Warnings and Precautions (5.3)].

Accidental Ingestion

Accidental ingestion of Meperidine hydrochloride tablets, especially by children, can result in a fatal overdose of meperidine [see Warnings and Precautions (5.3)].

Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants

Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. Reserve concomitant prescribing of Meperidine Hydrochloride Tablets and benzodiazepines or other CNS depressants for use in patients for whom alternative treatment options are inadequate [see Warnings and Precautions (5.4), Drug Interactions (7)].

Neonatal Opioid Withdrawal Syndrome (NOWS)

Advise pregnant women using opioids for an extended period of time of the risk of Neonatal Opioid Withdrawal Syndrome, which may be life-threatening if not recognized and treated. Ensure that management by neonatology experts will be available at delivery [see Warnings and Precautions (5.5)].

Opioid Analgesic Risk Evaluation and Mitigation Strategy (REMS)

Healthcare providers are strongly encouraged to complete a REMS-compliant education program and to counsel patients and caregivers on serious risks, safe use, and the importance of reading the Medication Guide with each prescription [see Warnings and Precautions (5.6)].

Cytochrome P450 3A4 (CYP3A4) Interaction

The concomitant use of meperidine hydrochloride tablets with all cytochrome P450 3A4 (CYP3A4) inhibitors may result in an increase in meperidine plasma concentrations, which could increase or prolong adverse reactions and may cause potentially fatal respiratory depression. In addition, discontinuation of a concomitantly used CYP 3A4 inducer may result in an increase in meperidine plasma concentration. Frequently reevaluate patients receiving meperidine hydrochloride tablets and any CYP 3A4 inhibitor or inducer [see Warnings and Precautions (5.7), Drug Interactions (7)].

Monoamine Oxidase Inhibitors (MAOIs) Interaction

Concomitant use of meperidine hydrochloride tablets with monoamine oxidase inhibitors (MAOIs) can result in coma, severe respiratory depression, cyanosis, and hypotension. Use of meperidine hydrochloride tablets with MAOIs within the last 14 days is contraindicated [see Contraindications (4), Warnings and Precautions (5.8), Drug Interactions (7)].