Is methylprednisolone a diuretic?

A diuretic is any substance that tends to increase the flow of urine, which causes the body to get rid of excess water.

yes

Absolutely, it is! I would refer you to Materia Medica's page at: http://medherb.com/Materia_Medica/Tarasacum_Dandelion_as_a_diuretic.htm , where you can read about dandelion's diuretic qualities. In...

Foods that contain natural diuretics are cranberries and cranberry juice, coffee and other beverages that contain caffeine, and apple cider vinegar. Apple cider vinegar also contains potassium, so it...

Yes, watermelon is a natural diuretic.