The chemicals similar to sildenafil, Viagra's active ingredient, which aren't noted on the Blue Steel and Hero product labels, "may dangerously affect a person's blood pressure level," an FDA news release states.
People with diabetes, high blood pressure, high cholesterol, or heart disease often take nitrates. ED is a common problem in men with these medical conditions. Because they may have been advised against taking ED drugs, these men may seek products like Blue Steel and Hero because the products are marketed as "all natural" or as not containing the active ingredients in approved ED drugs, the FDA notes.
The FDA advises people who have used either of these products to discontinue use and consult their health care professional if they have experienced any adverse events that they feel are related to the use of these products.
Consumers or health care professionals can report adverse events to the FDA's MedWatch program by phone at 800-FDA-1088 or on the FDA's web site.