Lucemyra is an oral, selective alpha 2-adrenergic receptor agonist that reduces the release of norepinephrine. The actions of norepinephrine in the autonomic nervous system are believed to play a role in many of the symptoms of opioid withdrawal.
The safety and efficacy of Lucemyra was supported by two randomized, double-blind, placebo-controlled clinical trials of 866 adults meeting Diagnostic and Statistical Manual-IV criteria for opioid dependence who were physically dependent on opioids and undergoing abrupt opioid discontinuation.
The studies evaluated benefit using the Short Opiate Withdrawal Scale of Gossop (SOWS-Gossop), which is a patient-reported outcome instrument that assesses opioid withdrawal symptoms. These symptoms include feeling sick, stomach cramps, muscle twitching, feeling of coldness, heart pounding, muscular tension, aches and pains, yawning, runny eyes and insomnia.
For each opioid withdrawal symptom, patients are asked to rate their symptom severity using four response options (none, mild, moderate and severe), with the SOWS-Gossop total score ranging from 0 to 30, where a higher score indicates a greater withdrawal symptom severity. SOWS-Gossop scores were lower for patients treated with Lucemyra compared to placebo, and more patients completed the treatment period of the studies in the Lucemyra group compared to placebo.
The most common side effects from treatment with Lucemyra include hypotension, slow heart rate, sleepiness, sedation and dizziness. Lucemyra was also associated with a few cases of fainting. Lucemyra effect the heart’s electrical activity, which can increase the risk of abnormal heart rhythms. When Lucemyra is stopped, patients can experience a marked increase in blood pressure.
After using opioid drugs, patients may be more sensitive to the effects of lower amounts of opioids if relapse does occur, and taking opioids in amounts that were used before withdrawing from opioids can lead to overdose and death.
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