How long does St. John's wort take to work?


Quick Answer

It may take up to four weeks for individuals to feel the full effect of St. John���s wort, according to the University of Maryland Medical Center. Individuals typically take St. John���s wort to relieve mild to moderate depression.

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How long does St. John's wort take to work?
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Full Answer

St. John���s wort is not effective for all forms of depression, and it shouldn���t be used as a substitute for medical care. According to the National Center for Complementary and Alternative Medicine, inadequate treatment may cause the depression to become severe. In addition, St. John���s wort can interfere with prescription medications such as antidepressants, birth control pills and warfarin. Taking St. John's wort and antidepressants concurrently may increase the body���s serotonin levels to life-threatening concentrations.

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