Soledad, there are a ton of sinus, cold and flu remedies you can buy OTC (over-the-counter)...I live close to the "Big Thicket" in Texas, so I'm plagued by allergies/PND.....and since the FDA took out an important ingredient in the past few years, it's more difficult to find something that'll actually stop the PND, tickling, itching throat and resultant cough.....so I opt for a heavy-duty cold/flu caplet/capsule that lasts at least 6 to 12 hrs.....it usually does the job
Frannie B