It can be hard to notice when someone is struggling with substance use, especially when the drug is a medication like methadone. Many people take methadone as part of treatment, but it can also be misused. You may notice changes in mood, sleep, behavior, or daily habits and start to worry. Still, you might not be sure what the signs mean or what to do next. Learning how to tell if someone is using methadone can help you understand what may be happening and how to respond. Support and treatment are available, and many people find help through rehab centers in West Virginia. Knowing the signs early can help you talk to your loved one, set boundaries, and encourage them to get the help they may need.