How long does Zoloft take to work?
Reviewed by Dr. Akinwande Akintola, MD - Sun Jul 19 2026
Sleep and appetite often improve inside two weeks. Mood and anxiety take longer, typically four to six weeks at the right dose. If you feel nothing by week six, that's not failure. It usually means the dose needs adjusting or a different medication fits you better, per NIMH's guidance on antidepressants.
This is exactly why we score every visit with PHQ-9 and GAD-7. "Is it working?" becomes a number you can watch move instead of a feeling you second-guess. Weighing it against the other common first choice? Here's Lexapro vs. Zoloft.
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