I don't know about sinus cocktails either I usually just take some OTC medications - don't need anything that drastic but considering you DO take antibiotics for bacterial infections but NOT for virus' (Unlike what most people think) if you think you have an infection you'll need to get one.
You shouldn't really be getting the flu or virus' on treatment because you are on antivirals right now. There should be enough in you to keep that stuff at bay at least for the most part. But bacteria is a different thing.
Still you can't overdue antibiotics or you do seem to build up an immunity to them - then when you really get sick they don't work.
We are SUPPOSED to have all those vaccinations - flu, hepb and hepa. All of us have. You should have a flu shot every year from now on, now that you have a chronic disease.
i would get your sinus prob sorted first,i wish i had of had all my flu shots b4 tx cos iv read several times its not gd to hav vaccinations on tx or chemo etc.
i have had every bug,virus flue thing goin around since tx and its made tx so bad and my wbc r very low and the flues dont help them get higher.
I don't know about the sinus cocktail but you should see your dr. before tx just in case. Regarding feeling sick, everyone is different. Some folks never miss a beat. I was horribly sick for 4 to 5 months. But, my husband has held up fairly well, all his labs are normal except for a small drop in his hemoglobin.
Wishing you well. Stacie