Desvenlafaxine Extended Release Tablets are a prescription medication used to treat major depressive disorder (MDD) in adults. They contain desvenlafaxine, a serotonin-norepinephrine reuptake inhibitor (SNRI), which helps balance chemicals in the brain that contribute to depression. The extended-release formulation allows the medication to be gradually released into the bloodstream over 24 hours, providing a consistent therapeutic effect with once-daily dosing. These tablets should be taken whole, not crushed or chewed, to maintain the extended-release properties. Common side effects may include nausea, dizziness, dry mouth, and insomnia. It's important to take desvenlafaxine as prescribed by a healthcare provider and not to abruptly stop the medication without consulting a doctor, as it may cause withdrawal symptoms.