Vicerex is not for everyone: Although Vicerex contains all-natural ingredients with no known side effects, the formula has been known to support higher levels of the key cholinergic neurotransmitters associated with sexual arousal. For this reason, erections may last longer than normal. Consult a physician if an erection persists for more than three hours. These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat cure or prevent any disease.