If you have to wait to get to the doctor, or just want to try something without the side effects of antibiotics, try odorless garlic soft gels!
You will need the highest dose of odorless garlic soft gels available at your local health food store or in the vitamin section of the pharmacy.
I recommend the odorless kind because the regular garlic soft gels will pass through your pores when you perspire. This type also have the advantage of avoiding "garlic breath"
Take 2 pills (1000 mg each) every 2 hours. A lot of doctors don't think that anything but prescriptions can do any good, but they agree that garlic surely cannot hurt. I continue to take my sinus medicine in conjunction with the garlic and feel a significant difference in 3 days.
This can be used instead of antibiotics if your infection isn't too bad. I take them whenever I feel sinusitis coming on.