Dry Beta Carotene - 10,000 IU 100 tab

Thyroxine, a thyroid hormone, stimulates the conversion of carotene into a usable nutrient and fat-splitting enzymes. Bile salts convert carotene. Individuals taking beta-carotene for extended periods of time should also supplement with vitamin E, as beta-carotene may reduce vitamin E levels.

Factors that interfere with the absorption of provitamin A are strenuous physical activity performed within 4 hours of consumption, consumption of mineral oil, excessive consumption of alcohol, excessive consumption of iron, and use of cortisone and other drugs. Intake of polyunsaturated fatty acids with carotene result in rapid destruction of carotene unless antioxidants are present.

Diabetics may not be able to convert carotene into provitamin A. An adequate supply of zinc is needed so that the liver can mobilize provitamin A out of its storage depots. Gastrointestinal and liver disorders, infections and any condition in which the bile duct is obstructed may limit the body's capacity to retain and use vitamin A.