Many people with mild-to-moderate anxiety problems use complementary or alternative medicine. Camomile has been used as a traditional herbal remedy for its relaxing and calming effect and causes few side effects. However, there have not been many clinical trials into the effectiveness of camomile for anxiety. In a small trial involving 57 people researchers from the University of Pennsylvania studied the effectiveness of camomile at combating anxiety compared to a placebo. They found that the group taking camomile showed a significantly reduced score on the Hamilton Anxiety Rating Scale compared to the placebo group and suffered no more side effects than those taking the dummy treatment.
Amsterdam, Jay D. ... [et al] - A randomized, double-blind, placebo-controlled trial of oral matricaria recutita (chamomile [sic]) extract therapy for generalized anxiety disorder Journal of Clinial Psychopharmacology August 2009, 29(4), 378-382