What is the best way to make tongue swelling go away?

See MD!: Tongue swelling can be caused by multiple causes including, allergy; some rare diseases; trauma (such as inadvertently biting the tongue); dental problems. In short, treatment depends on the cause of the swelling. See a physician.

Need a Dx first: The more important question is to find out what is causing your tongue to swell. Once a diagnosis is made then appropriate treatment can be rendered.