Enter your mobile number into the Epocrates Messenger Application to receive a standard rate alert for verifying the application. Receive 2 messages per request. Text STOP to 67588 to opt out. Text HELP to 67588 for help or call 1-800-230-2150 for more information. Message and Data Rates May Apply. Participating carriers include: Alltel, AT&T, MetroPCS, Cricket, T-Mobile, U.S. Cellular, Sprint, Boost, Virgin Mobile and Verizon Wireless.