Beta Carotene (and other Carotenoids)


Carotenoids are a group of pigments that are foundnaturally in dark green, red and yellow fat-soluble compounds. Over 600 different carotenoids have been identified, with 30-50 having provitamin A activity. Alpha, gamma, and beta carotenes are converted primarily in the intestinal mucosa to vitamin A (retinol). Approximately 33% of beta carotene from food gets absorbed and only 33% of the absorbed beta carotene is converted to retinol.

Supplement Forms:


Provitamin A Carotenoid Food Sources:

Nonprovitamin A Carotenoid Food Sources:

Causes of Deficiency:

Adverse Reactions and Toxicity:

Drug/Nutrient Interaction:

Biochemical Functions:

Clinical Indications:

Copyright 1998 - 2008 by L. Vicky Crouse, ND and James S. Reiley, ND. All rights reserved (ISSN 1527-0661).