Hi what is the dose of cefdinir for someone with pneumonia. Been sick in bed with the flu for 10 days. Fever, aches, couch,, and more. Turned into pneumonia. Has been treated with Tamiflu, inhaler, cough medicine, now cefdinir. Prescribed 300 mg. 2X day for 10 days. She has taken 3 doses. No better. Trouble breathing . She is 41 years old. I have never seen her so sick. Should she go to the emergency room?