Amoxicillin, brand name Amoxil, and amoxicillin-clavulanate -- Augmentin -- are antibiotics commonly prescribed for sinus infections, according to WebMD. If a patient is allergic to penicillin-related drugs, cefaclor and loracarbef are sometimes used. Treatment usually takes 10 to 14 days.
When an individual has had a sinus infection for less than four weeks, antibiotics are often not administered, according to MedlinePlus. In these cases, the infection usually clears up on it own. Antibiotics do not significantly hasten recovery time. However, patients with high fevers, headaches, facial pain or swelling around the eyes are generally medicated. Antibiotics are also prescribed for children with nasal discharge and cough.