what does sertraline do
Sertraline is a type of antidepressant called a selective serotonin reuptake inhibitor (SSRI) . Serotonin is a neurotransmitter â a chemical that relays signals between the cells in your brain.SSRIs increase the amount of serotonin in your brain, and this is how sertraline is thought to improve the symptoms of depression.erotonin is a neurotransmitter â a chemical that relays signals between the cells in your brain. SSRIs increase the amount of serotonin in your brain, and this is how sertraline is thought to improve the symptoms of depression.