Especially this applies to elderly people and those who already have serious mental disorders. By its nature, St. John's wort is a weakly toxic plant, which should not be used for a long period. Source
តាមធម្មជាតិរបស់វាផ្លូវដំណាំរបស់ St. John គឺជារុក្ខជាតិពុលដែលមិនគួរប្រើក្នុងរយៈពេលយូរ។