[casiotone]

There have been various trials with MDMA/LSD showing efficacy in treating some mental disorders. And they are probably even more effective than SSRIs, seeing as how we don't even know how or why SSRIs seem to work, if they even do. (But, of course, don't self-medicate, talk to your doctor.)

SSRIs are not strictly addictive but they do cause very unpleasant withdrawal effects as your brain gets used to a 'normal' level of serotonin again.