Is augmentin (amoxicillin and clavulanate) (or the generic) 875 mg. A good medicine to take for sinus infections and what else can help, including over the counter. Thank you.?

Yes . Augmentin (amoxicillin and clavulanate) is a good, broad spectrum antibiotic for sinus infection- it is Amoxicillin and clavulanate which helps prevent resistant infections. You could use a decongestant (and or antihistimine) over the counter to help with symptoms (can be used at the same time).