Experimental Antidepressants Offer Faster Relief

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In one test, the researchers found that one of the serotonin receptor agonists took effect after only three days and completely erased the depressive symptoms after one week.

For instance, mild stress has been shown to reduce consumption of sugar water by rodents -- a behavior alleviated by weeks of SSRI treatment. But the McGill researchers found that one of the serotonin receptor agonists produced effects within three days and seemed to removed the depressive symptoms within a week.

The new drugs, however, may have side effects. "There are potential side effects, and that's where the rub could be with clinical trials," Frye said.

More information

For more on depression, visit the U.S. National Institute of Mental Health.