I have been taking 2 antibiotics constantly for almost three years. (Lyme Disease)<br />
I take three capsules daily of Mega Flora by Mega Food. It has kept me well.
Doxycycline mono and nystatin. I also pulse tindamax two weeks at a time.
The mega flora is sold in my health food store and is kept refridgerated
Try inner health plus. Or if not, even something like Yakult should be okay :)
Sinositus can be due to hey fever. Try Beconase nasal inhaler Sray.
I take Onken Bio set Yogart.