Mechanism of Action: Sertraline works by selectively inhibiting the reuptake of serotonin, a neurotransmitter in the brain. By blocking the reuptake of serotonin, sertraline increases the levels of serotonin

I have depression and medicate for it, 50mg a day of sertraline and it helps but some days are worse than others. It's not a simple fix. When I started taking sertraline tablets I got bad side effects