Gripe water is a non-prescription product sold in many countries around the world to relieve colic and other gastrointestinal ailments and discomforts of infants. No evidence supports the efficacy of gripe water and one limited study in India questions whether the consumption of gripe water is related to vomiting in babies that already showed signs of colic. The original formula contained alcohol and sugar in addition to sodium bicarbonate and dill oil. Present-day products do not contain alcohol, and may contain fennel, ginger, chamomile or lemon balm in addition to or replacement for dill oil. Some gripe water products still contain sugar, while others may contain charcoal. Amounts given are one to several teaspoons (5 ml = one teaspoon) per day.