Overview
11 DESCRIPTION Tramadol hydrochloride is an opioid agonist in an extended-release tablet formulation for oral use. The chemical name is (±) cis -2-[(dimethylamino) methyl]-1-(3-methoxyphenyl) cyclohexanol hydrochloride. Its structural formula is: The molecular weight of tramadol hydrochloride is 299.84.
Mechanism of Action
12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Tramadol hydrochloride extended-release tablets contain tramadol, an opioid agonist and an inhibitor of reuptake of norepinephrine and serotonin. Although the mode of action of tramadol is not completely understood, the analgesic effect of tramadol is believed to be due to both binding to μ-opioid receptors and weak inhibition of reuptake of norepinephrine and serotonin. Opioid activity of tramadol is due to both low affinity binding of the parent compound and higher affinity binding of the O-desmethyl metabolite M1 to μ-opioid receptors. In animal models, M1 is up to 6 times more potent than tramadol in producing analgesia and 200 times more potent in μ-opioid binding.
Indications
- 1 INDICATIONS AND USAGE Tramadol hydrochloride extended-release tablets are indicated for the management of severe and persistent pain that requires an opioid analgesic and that cannot be adequately treated with alternative options, including immediate-release opioids. Limitations of Use • Because of the risks of addiction, abuse, misuse, overdose, and death, which can occur at any dosages or duration, and persist over the course of therapy, [see Warnings and Precautions (5.
Common Doses
- 100 mg
- 300 mg
Dosage
2 DOSAGE AND ADMINISTRATION Tramadol hydrochloride extended-release tablets should be prescribed only by healthcare professionals who are knowledgeable about the use of extended-release/long-acting opioids and how to mitigate the associated risks. (2.1) Use the lowest effective dosage for the shortest duration of time consistent with individual patient treatment goals. Reserve titration to higher doses of tramadol hydrochloride extended-release tablets for patients in whom lower doses are insufficiently effective and in whom the expected benefits of using a higher dose opioid clearly outweigh...
Black Box Warning
WARNING: SERIOUS AND LIFE-THREATENING RISKS FROM USE OF TRAMADOL HYDROCHLORIDE EXTENDED-RELEASE TABLETS Addiction, Abuse, and Misuse Because the use of tramadol hydrochloride extended-release 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 (5.1)] .
Contraindications
- 4 CONTRAINDICATIONS Tramadol hydrochloride extended-release tablets are contraindicated for: all children younger than 12 years of age [see Warnings and Precautions (5.4)] post-operative management in children younger than 18 years of age following tonsillectomy and/or adenoidectomy [see Warnings and Precautions (5.4)] . Tramadol hydrochloride extended-release tablets are also contraindicated in patients with: Significant respiratory depression [see Warnings and Precautions (5.
Side Effects
- 6 ADVERSE REACTIONS The following serious or otherwise important adverse reactions are described in greater detail, in other sections: Addiction, Abuse, and Misuse [see Warnings and Precautions (5.1)] Life-Threatening Respiratory Depression [see Warnings and Precautions (5.2)] Ultra-Rapid Metabolism of Tramadol and Other Risk Factors for Life-Threatening Respiratory Depression in Children [see Warnings and Precautions (5.6)] Neonatal Opioid Withdrawal Syndrome [see Warnings and Precautions (5.4)] Interactions with Benzodiazepines and Other CNS Depressants [see Warnings and Precautions (5.
Interactions
- 7 DRUG INTERACTIONS Table 2 includes clinically significant drug interactions with tramadol hydrochloride extended-release tablets. Table 2: Clinically Significant Drug Interactions with Tramadol Hydrochloride Extended-Release Tablets Inhibitors of CYP2D6 Clinical Impact: The concomitant use of tramadol hydrochloride extended-release tablets and CYP2D6 inhibitors may result in an increase in the plasma concentration of tramadol and a decrease in the plasma concentration of M1, particularly when an inhibitor is added after a stable dose of tramadol hydrochloride extended-release tablets is...