When depression sufferers get put on an SSRI regimen (the most common type of antidepressant), it can be a bit tedious. These meds can take a while to be effective, which is not ideal for obvious reasons. Imagine having a stiff back for months, finally realizing you can take something for it, and then taking that medicine for days before getting any relief. Fortunately, new research could lead to faster, more effective antidepressants. Rockefeller University scientists described how SSRIs initiate action on nerve cells for the first time, which means innovators will be able to design better SSRIs on account of the whole now-we-actually-know-how-it-works thing. Here’s some more drugs we’ve been giving people for years even though we don’t know exactly what they’re doing.