With the naturalljy occurring vitamin C metabolites (including L-threonic acid L-lyxonic acid and L-xylonic acid) that have been shown to enhance the absorption of vitamin C. Ester-C Plus is exclusively formulated for Solgar and provides a patented method of supplementing pH neutral (non-acidic) vitamin C to prevent digestive irritation. In addition, Ester-C Plus contains the vitamin C metabolites that occur along with vitamin C in nature. A special manufacturing process is employed to form a unique calcium ascorbate metabolite complex. Solgar´s Ester-C Plus offers the additional benefits of providing acerola, citrus bioflavonoids complex, rutin and rose hips in the Ester C ascorbate metabolite complex.SUITABLE FOR VEGANS.Each tablet of Solgar Ester-C Plus 1000mg Tablets provides: Vitamin C (as calcium ascorbate/threonate)1000mg, Citrus Bioflavonoids (as prep.)200mg, Acerola Fruit Powdered Extract 25mg, Powdered Rose Hips 25mg, Rutin 25mg. Solgar Ester-C Plus 1000mg Tablets are Tableted with these natural ingredients: dicalcium phosphate, microcrystalline cellulose, hydroxypropyl cellulose, silicon dioxide, vegetable stearic acid, magnesium stearate, cellulose gum, vegetable glycerin. Directions:As a food supplement for adults, one (1) tablet daily, preferably at mealtime, or as directed by a healthcare practitioner.