How do you make phlegm go away?

To help reduce phlegm, stay hydrated by drinking plenty of fluids, which can thin mucus. Inhaling steam from a hot shower or a bowl of hot water can also provide relief by loosening congestion. Over-the-counter expectorants can help clear mucus from the airways, and using a humidifier can add moisture to the air, easing throat irritation. If symptoms persist, consult a healthcare professional for further evaluation.