Los Angeles ( CNN ) -- Sage Stallone , the 36-year-old son of actor Sylvester Stallone , died of atherosclerosis , which brought on a heart attack , a spokesman for the Los Angeles County coroner said Thursday . Stallone was found dead in his Los Angeles home on July 13 by his housekeeper , who was asked by Stallone 's mother to check on him . No drugs were found in Stallone 's body other than an over-the-counter Tylenol-style pain medication , according to Lt. Fred Corral of the coroner 's office . Stallone 's family was recently notified of the findings , which will be detailed in a full autopsy report to be made public next week , Corral said . Sylvester Stallone made a public appeal last month for an end to `` speculation and questionable reporting '' about his son using drugs . `` Because when a parent loses a child there is no greater pain , '' Stallone said . `` Therefore I am imploring people to respect my wonderfully talented son 's memory and feel compassion for his loving mother , Sasha , because this agonizing loss will be felt for the rest of our lives . Sage was our first child and the center of our universe and I am humbly begging for all to have my son 's memory and soul left in peace . '' Sudden celebrity deaths often draw early speculation about drug involvement in Hollywood , but in several recent cases the cause of death proved to be natural . Although the investigation into actor Corey Haim 's death two years ago began as a `` suspected prescription medication overdose , '' toxicology tests `` revealed no significant contributing factors '' from drugs , the coroner later concluded . Pneumonia , not drug abuse , killed Haim . Similar speculation about drug use followed the December 2009 death of actress Brittany Murphy . The coroner eventually ruled that Murphy died from a combination of pneumonia , an iron deficiency and multiple drug intoxication . The drugs involved are legal and are used to treat respiratory infections , according to the autopsy report . Stallone was engaged to be married and was working on various film projects at the time of his death . He acted in several movies , including `` Daylight '' and `` Rocky V '' with his father . The younger Stallone also co-founded Grindhouse Releasing , a company that describes itself as `` dedicated to the restoration and preservation of motion pictures historically held in very low regard . '' CNN 's Douglas Hyde contributed to this report .
Over-the-counter pain medication only drug found in Stallone 's body , coroner says . Sylvester Stallone had appealed for end to `` speculation '' about his son using drugs . Stallone was found dead in his Los Angeles home on July 13 by his housekeeper . A full autopsy report is to be made public next week .