Natures Aid tablets are made from a standardised extract of St John rsquo s Wort which have been extensively researched in Germany since the early 1980s. Scientific studies of the herb suggest that it acts to increase the activity & prolong the action of the neurotransmitters serotonin & noradrenaline in a similar manner to standard antidepressants but with many fewer reported side effects St. John s Wort has been traditionally used to help maintain a healthy emotional balance. It also act