Last night I wanted to die. I have had periodic, severe bouts of sinusitis over the years. Yesterday’s episode came on suddenly and hit me hard. Augmentin has been a life saver for me. I have taken countless courses of this antibiotic that combines amoxicillin and clavulanic acid. Amoxicillin alone is not as effective against the bacteria that cause sinusitis. But the addition of clavulanic acid is a game changer and has rescued me many times.