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  • Title: Extended-release Tramadol (ULTRAM ER): a pharmacotherapeutic, pharmacokinetic, and pharmacodynamic focus on effectiveness and safety in patients with chronic/persistent pain.
    Author: Barkin RL.
    Journal: Am J Ther; 2008; 15(2):157-66. PubMed ID: 18356636.
    Abstract:
    Tramadol is a centrally acting synthetic opioid analgesic that has a dual mechanism of action, binding to mu-opioid receptors and weakly inhibiting the neuronal reuptake of norepinephrine and serotonin. Extended-release (ER) tramadol tablets (ULTRAM ER) are indicated for the management of moderate to moderately severe chronic (also referred to as persistent) pain in adults who require around-the-clock treatment of pain for an extended period of time. Because once-daily tramadol ER results in less frequent fluctuations in plasma concentrations than equivalent daily doses of short-acting tramadol, it may benefit patients experiencing pain throughout the dosing interval. On the basis of computer-generated pharmacokinetic models, one can easily transition patients who are receiving short-acting tramadol for chronic/persistent pain to tramadol ER, by calculating the current total daily dose of short-acting tramadol and starting tramadol ER at the nearest lower 100-mg-dose increment. In clinical studies, tramadol ER significantly reduced pain in patients with chronic pain from osteoarthritis and improved pain-related sleep parameters, joint stiffness, and physical function. Tramadol ER has been shown to be safe and well-tolerated and may be a suitable alternative for patients with inadequate analgesic response or contraindications (eg, cardiovascular disease, gastrointestinal ulcer) to use of nonsteroidal anti-inflammatory drugs (NSAIDs) or cyclooxygenase-2 (COX-2) inhibitors. The proven efficacy and safety profile--and the low potential for abuse--make tramadol ER a viable therapeutic option for the management of chronic/persistent nonmalignant pain in some patients. This article reviews the pharmacology, pharmacokinetics, pharmacodynamics, dosage, delivery system, administration, analgesic efficacy, and safety and tolerability profile of tramadol ER.
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