Beyond achieving its intended effect, a given medication may have additional good effects (“fringe benefits”) and additional bad effects (“adverse effects”). In the United States, drug development is regulated by the Food and Drug Administration (FDA), which requires pharmaceutical companies to list any symptom reported by a subject/patient while the drug is being tested, with the result being that the potential “adverse effects” listed in a drug’s package insert may be uncommon, or not even proven to be caused by the medication itself, so such lists must be interpreted with caution. The FDA Adverse Event Reporting System (FAERS) maintains a publicly available website that is more useful in that it not only lists possible adverse effects of a drug, but also their frequency, which is more informative than an undifferentiated list.