FDA
According to a recent MedWatch Safety article, The Food and Drug Administration has warned consumers against purchasing or using the product PrimeZen Black 6000, which is marketed as a sexual enhancement product and sold on various websites and retail stores. Laboratory analysis by the FDA confirmed that the product contains sildenafil and tadalafil, the active ingredients in the prescription drugs Viagra and Cialis, respectively, and can interact with nitrates in prescription drugs, leading to dangerously low blood pressure levels.
