SISU - Ester-C® 1,000 mg, Bonus* 150 tabs

High-potency tablets enhanced with citrus bioflavonoids to help strengthen your immune system

High Potency Vitamin C; Enhanced with vitamin C-rich acerola cherry extract and citrus fruits as well as bioflavonoids and rutin for superior immune system support in fewer doses.

Immune Support & More; This antioxidant-rich Ester-C® formula supports immune health and allergy relief and helps maintain strong bones, gums, and teeth.

Gentle & Well Retained; Ester-C® is a less-acidic vitamin C that is gentle on the digestive system; Clinical studies show that Ester-C® increases vitamin C levels in the body for up to 24 hours.

Superior Absorption; Regular vitamin C is first buffered with calcium, then a special process transforms it into trademarked Ester-C®.