It is not recommended that you take more than one tablet of Roman's Prostate Health supplement per day. Doing so may increase your chance of experiencing side effects. The daily dose of each of the ingredients was specifically chosen based on existing research. It is unclear what effects taking more of each ingredient will have. Taking more than one tablet per day may also put you over the Tolerable Upper Intake Level (UL) for selenium, which is 400 mcg per day. Regularly ingesting more than the UL for selenium can lead to hair loss, nail changes, nausea, vomiting, diarrhea, mental status changes, vision changes, numbness or tingling in the extremities, and abnormalities on brain imaging.