Chamomile (Matricaria chamomilla) is a natural relaxant that helps soothe the nerves insomnia and helps in anxiety, skin irritations, arthritis, menstrual cramps, gastrointestinal upset, flatulence, colic, nervous diarrhea, bedwetting caused by bladder irritation, fevers, colds and flu. Chamomile essential oil has a relaxing effect on the digestive tract.