selective serotonin reuptake inhibitors (SSRIs) are a class of drugs that are used to treat depression and anxiety disorders. They work by blocking the reabsorption of serotonin, a neurotransmitter that regulates mood, sleep, and appetite, in the brain. This increases the amount of serotonin available in the synaptic cleft, where it can bind to receptors and exert its effects. SSRIs are generally considered safe and effective, but they may cause some side effects such as nausea, insomnia, sexual dysfunction, and withdrawal symptoms.
