Would herion overdose make you throw up black?

A heroin overdose can lead to various symptoms, including nausea and vomiting. However, if someone vomits black material, it may indicate the presence of blood that has been digested, often referred to as "coffee ground" vomit. This could suggest serious internal bleeding or other complications and requires immediate medical attention. If you suspect an overdose, it is crucial to seek emergency help right away.