Trazodone reaches peak blood levels within about 1 to 2 hours of a dose, which is why its sedating effect for sleep is often noticeable quickly. However, when it is prescribed for depression, the antidepressant benefit builds gradually over weeks as serotonin receptor activity adjusts — this is true of essentially all antidepressants, not something specific to trazodone. Give it the full trial period your prescriber recommends before judging whether it is working for depression specifically.
How long does it take for trazodone to start working?
Short answer: For sleep, many people notice an effect the first night. For depression, full benefit typically takes 2 to 4 weeks of consistent use, similar to other antidepressants.
Editorially reviewed
Not medical advice. This answer is general and educational. Your prescriber knows your full history and can give guidance specific to you.