Does methadone have a shelf life?

Yes, methadone does have a shelf life, which is typically indicated on the medication's packaging or label. Generally, it is effective for about 1 to 2 years from the date of manufacture, depending on storage conditions. Using methadone past its expiration date may reduce its efficacy and safety, so it's important to follow guidelines and consult a pharmacist if unsure. Always dispose of expired medications properly.