The FDA said Shangai Chaojimengnan male sexual-enhancing dietary supplements contain undeclared active ingredients that could interact with nitrates in drugs taken for disorders commonly associated with erectile dysfunction, including diabetes, high blood pressure, high cholesterol and heart disease. The Chinese-made products are sold under the names Super Shangai, Strong Testis, Shangai Ultra, Shangai Ultra X, Lady Shangai and Shangai Regular.

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