| Founded | December 2014 |
|---|---|
| Founded by | Sierra Santana Brothers |
| Founding location | Buenavista Tomatlán, Michoacan |
| Years active | 2014–present |
| Territory | Michoacan |
| Ethnicity | Mexican |
| Criminal activities | Drug trafficking, money laundering, arms trafficking, extortion, murder, kidnapping |
| Allies | La Nueva Familia Michoacana Los Blancos De La Troya Guardia Michoacana Cártel Independiente de Acapulco (defunct) Beltrán-Leyva Cartel (defunct) |
| Rivals | Jalisco New Generation Cartel La Barredora Knights Templar Cartel |
Los Viagras also known as Los Sierra is an armed wing of the LNFM Cartel in the state of Michoacán, Mexico.[1] It was founded by the Sierra Santana Brothers, being led by Rodolfo Sierra Santana (Alias ”El Tronado”) for whom arrest warrants have been issued in connection with multiple counts of homicide, robbery, extortion, and kidnapping.[2] The group mainly operates in Zamora, Jacona, Tangancicuario, Sahuayo, and Uruapan Regions.