Saw palmetto extract may decrease the effectiveness of estrogen products by reducing estrogen levels in the body via its antiestrogenic effects.  It can interfere with the use of birth control pills that contain estrogen as an active ingredient. As a result, it is recommended that an additional form of birth control, such as a condom, be used to prevent pregnancy in patients taking birth control pills with saw palmetto extract. In addition, saw palmetto extract can also interfere with hormone replacement therapy by reducing the effectiveness of estrogen pills. The combination of saw palmetto extract with estrogen products should be used with caution. 
Headquartered in Eustis, Florida USA (near Orlando), Valensa International manufactures dietary ingredients, condition-specific formulations that are used in nutritional supplements, and functional foods to support a healthy lifestyle and enhance health. Valensa is the proud owner of more than 60 US and International Patents for Formulations and Manufacturing (Deep Extract ® Supercritical CO 2 and O2B ® Peroxidation Blocker stabilization.) Valensa is committed to production and processing that supports the environment and fair labor practices for those that work the land and participate in the production process.