Merck issued a press release today responding to the FDA’s investigation. Along with the standard "we didn’t know about this problem until after it the market" disclaimer, the PR mentioned:
In a cumulative analysis recently provided to the FDA of Merck’s randomized, double-blind, placebo-controlled clinical trials, which included over 11,000 adults and children in over 40 studies who were treated with SINGULAIR, there were no reports of suicidal thoughts or actions and no completed suicides in the patients who received SINGULAIR.
Additionally, in a cumulative analysis recently provided to the FDA of Merck’s randomized, double-blind, clinical trials that compared SINGULAIR with other active agents to treat asthma (which included over 3,900 adults and children who were treated with SINGULAIR and over 3,400 who were treated with other asthma therapies), there was 1 patient who attempted suicide who received SINGULAIR, and there were 3 patients who attempted suicide who received other asthma therapies (including inhaled corticosteroids and long-acting beta-agonists). These studies were not designed to compare the rate of suicide in patients taking SINGULAIR with the rate of suicide in patients taking these other asthma agents.
Did Merck report that one suicidal attempt when compared to "other active agents to treat asthma"? It doesn’t say anything in their patient safety or prescribing information when I checked. Perhaps someone can find out whether they reported this in their clinical trials?
In the meantime, the Singulair section of medications.com is ablaze with parents who are now expressing concern over their children’s well-being on the drug. Apparently, issues have cropped up with the drug even before the FDA announced their investigation.
In a particularly odd link, the FDA is looking into Singulair, the asthma and allergy drug and its correlation with suicidal behavior. I’ve taken Singulair in the past and not once did it ever occur to me to think about an allergy medication being linked to suicidal behavior. The FDA also says that it could cause mood and behavior changes. The situation that alerted the FDA to this possibility is the story of 15-year-old Cody Miller who killed himself 17 days after switching from allergy medication Allegra to Singulair. Miller’s mother, Kate, approached his medication switch with extreme caution and informed herself of the possible side effects:
She checked the Merck website and the information sheet she got from the pharmacist on Singulair and found no red flags, so they were stumped when Cody started acting out of character.
I have to hand it to Merck: Once the Millers reported Cody’s death, they immediately updated Singulair’s warnings to include suicidal thoughts and actions. However, Cody died on August 4, 2007. Merck updated their information two months later. As of February 29, 2008, the FDA still hadn’t taken any action. Despite the updated warnings, however, doctors and pharmacists were unaware of the new information.
The Singulair website carries the updated side effects, but you have to search it out in the patient information PDF on the fourth of five pages.
If you check with the FDA, you’ll find nothing. That’s because they admit they haven’t updated their website on Singulair since 2001.
According to the FDA’s MedWatch safety information, they have only begun their investigation today. They say it will take 9 months for them to “complete their investigation.” We may not hear of the FDA’s conclusions until early 2009. If this is a single, isolated incident, the FDA may just say the results are inconclusive and allow Merck rip the warning off their patient safety information. It is also important to note, however, that Singulair has also been linked to depression and anxiety.
Continue reading “Singulair and Suicidal Behavior”