Year-Round Daily Use; This Ester-C formula with citrus bioflavonoids is suitable for year-round use, but dosage can be increased during cold and flu season, or times of stress.

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

Well Retained; 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. This vegan, non-GMO formula contains no dairy, gluten, or soy .

Gentle On The Stomach; Sisu Ester-C 600 mg is a less-acidic vitamin C that is gentle on the digestive system.

Each vegetarian capsule contains:

Medicinal ingredients:

Vitamin C (calcium ascorbate)   |   600 mg

from Ester-C® brand calcium ascorbate

Calcium (calcium ascorbate)   |   72 mg

Citrus bioflavonoids (lemon, grapefruit, orange, mandarin orange–fruit)   |   100 mg

 

Contains no dairy, wheat, gluten, or soy.

Adult dosage: Take 1-2 capsules daily or as directed by a healthcare practitioner.

Verlhac, V., and J. Gabaudan. "Influence of vitamin C on the immune system of salmonids." Aquaculture Research 25.1 (1994): 21-36. http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2109.1994.tb00663.x/abstract Rivers, Jerry M. "Safety of High‐level Vitamin C Ingestion." Annals of the New York Academy of Sciences 498.1 (1987): 445-454. http://onlinelibrary.wiley.com/doi/10.1111/j.1749-6632.1987.tb23780.x/abstract