Substance use disorder (SUD) affects a person’s ability to control their use of alcohol or drugs. SUD can affect various areas of a person’s life, such as work, school, or family responsibilities.

A drug interaction happens when a substance affects how a drug behaves in the body. Some substances that can cause interactions include other drugs, supplements, food, and alcohol. Drug interactions ...

At-home drug tests are urine or saliva tests that can identify if illegal or prescriptions drugs are present in your body. These tests are an alternative to going in person to a laboratory or other ...