A system for alerting a user of undesired components in purchase items is provided. The system comprises receiving a list of undesired components of purchased items, and defining an alert to a user of an undesired component in a purchased item, the alert comprising an alert timing configuration and an undesired component identification. The system further comprises receiving a notice that the user purchased an item, determining whether a listing of the purchased item has been automatically collected, and generating a list of components of the purchased item when the purchased item listing has been automatically collected, and obtaining from the user the list of components of the purchased item when the purchased item listing has not been automatically collected. The system further determines whether the purchased item contains an undesired component, and upon determining that the purchased item contains art undesired component, sends the alert to the user.