Ester C has a neutral pH so it is gentle on the stomach. It is one of the top selling forms of vitamin C in the US, its popularity due to its easy absorption.
(Typically per tablet):
Ester C - 650mg
Vitamin C - 500mg
Ester C (Vitamin C as Calcium Ascorbate/Threonate), Cellulose, Calcium Carbonate, Hydroxypropyl Methylcellulose, Tablet Coating (Hydroxypropyl Methylcellulose, Cellulose, Colours: Titanium Dioxide & Iron Oxide), Silicon Dioxide, Stearic Acid, Magnesium Stearate.
Take 1 to 3 tablets daily, or as directed by a practitioner or pharmacist.
Do not exceed recommended daily dose.
Over 1000mg of vitamin C may cause mild stomach upset in sensitive individuals.