What is a button of heroin?

A button of heroin typically refers to a small amount of the drug, often around 1 to 2 grams, packaged for individual use. The term can vary regionally and may describe the physical appearance of the heroin, which can be in a small ball or clump form. Heroin is an illegal opioid that is highly addictive and poses significant health risks, including overdose. Its use and distribution are illegal in many countries.