How long does it typically take for most antidepressants to start showing noticeable effects?

Most antidepressants generally begin to show noticeable effects within a timeframe of 2 to 4 weeks after starting treatment. The correct answer, which indicates 3 weeks, reflects this common clinical observation.

The reason for this timeline is that while some individuals may experience improvements in symptoms such as anxiety, sleep, or energy levels sooner, the full therapeutic effects, especially in terms of mood improvement, typically require a few weeks. This delayed onset is due in part to the physiological changes needed in the brain's neurotransmitter systems to effectively alleviate depressive symptoms.

In practice, healthcare providers often advise patients to be patient and continue taking their prescribed medication, as early discontinuation due to lack of immediate effects can hinder recovery. Thus, expecting noticeable benefits around the 3-week mark is consistent with clinical guidelines and patient experiences.