Tryptophan, found in food, is an important ingredient in the neurotransmitter serotonin. But is that enough to support it as a possible mood booster? The research is decidedly mixed.
Sertraline is effective at treating mild and moderate depression.
Taking antidepressants during pregnancy is linked with various health issues, but stopping taking antidepressants can be even more problematic.
The increasing placebo response rate in depression is likely driven by an increasing expectation that treatment will work.
The flowering tops and aerial parts of the St John's Wort plant are used medicinally in the form of tinctures and tablets to treat a number of conditions affecting the nervous and immune systems.