Although the AREDS Formula includes 15,000 IU of the beta-carotene form of vitamin A, studies have shown that beta-carotene increases the risk of lung cancer in smokers. Therefore, both current smokers and those people who have habitually smoked within the past 20 years are advised to remove beta-carotene from their macular degeneration regimen.
The VisiVite Formulas below are notable for their removal of beta-carotene. Since the AREDS results, additional studies have provided evidence that additional ingredients may improve the appearance, structure and function of the retina. VisIVite AREDS2 Select Formula contain both Lutein and Zeaxanthin, which like beta-carotene are carotenoids found in green leafy vegetables, have been shown to be very beneficial. VisiVite Lutein formula contains lutein but not zeaxanthin, and is more affordable. VisiVite AREDS2 PLUS+ Gold Formula has higher lutein and zeaxanthin, as well as several other antioxidants.