Julio Cesar Chavez Jr., former boxing champ and son of one of Mexico's greatest-ever athletes, was recently treated at a psych hospital after his wife told police he consumed dozens of pills, and she was scared for his safety.
Sources tell TMZ Sports 37-year-old Chavez Jr.'s wife, Frida Chavez, contacted police in the Hollywood area on October 24 ... after she became worried about her hubby's health.
Frida -- who was previously married to Joaquin "El Chapo" Guzman's late son, Edgar Guzman Lopez -- told cops she believed Julio ingested a large amount of potent and potentially dangerous medication .