Rennie relieves acid indigestion, heartburn, nervous indigestion, acidity, flatulence, upset stomach, dyspepsia, or billiousness.With a smooth fresh taste Adults including elderly persons: Two tablets to be sucked or chewed as required. Repeat whenever discomfort is felt to a maximum of sixteen tablets a day.Children 6-12 years: One tablet as required up to a maximum of eight tablets a day.Not recommended for children under 6 years