Finding the Right Antidepressant
Although antidepressants have helped thousands of people manage their depression, finding the right drug (or drug combination) for you can be a challenging task.
Many cases of depression are thought to be caused by deficiencies in any of three chemicals in the brain: serotonin, norepinephrine, and dopamine. Some patients might only require medication addressing one of these chemicals, while others need to manage two of them, or even all three.
Psychiatrists almost always begin by prescribing selective serotonin reuptake inhibitors (SSRIs) including Prozac, Paxil, Lexapro, and Zoloft. These pills block the reuptake of serotonin, thus allowing the brain to benefit from the chemical for longer amounts of time without actually increasing the quantity of serotonin produced. SSRIs are generally mild in terms of side effects, although sexual side effects (loss of libido) are a problem for some patients.
If you try several SSRIs and still feel depressed, your doctor might start you on a different class of drugs called serotonin-norepinephrine reuptake inhibitors (SNRIs), which work like SSRIs, except that they target both serotonin and norepinephrine. These include Cymbalta, Effexor, and Ixel.

