Most cases of pneumonia can be managed at home with over-the-counter and prescription medications and a lot of rest. Keeping well hydrated is important. In addition to drinking water, try electrolyte drinks (like Pedialyte or Gatorade), herbal teas, and warm chicken broth. To promote clearing phlegm from your lungs, avoid cough suppressants. Instead, your healthcare provider may recommend taking an expectorant, such as Mucinex (guaifenesin), the thin mucous making it easier to expel.