Has more side effects than Allegra since it has pseudoephedrine in it. The antihistamine (fexofenadine) can cause dizziness, drowsiness, dry eyes/mouth, and constipation. The decongestant (pseudoephedrine) can make your blood pressure higher and can make it harder to sleep.
Food preservatives (or additives) contained in certain foods can trigger headaches. Nitrates and nitrites are additives in: 1  Hot dogs. 2  Ham. 3  Sausage. 4  Bacon. 5  Lunch meats and deli-style meats.6  Pepperoni.7  Other cured or processed meats. 8  Some heart medicines.ood preservatives (or additives) contained in certain foods can trigger headaches. Nitrates and nitrites are additives in: 1  Hot dogs. 2  Ham. 3  Sausage. 4  Bacon. 5  Lunch meats and deli-style meats. 6  Pepperoni. 7  Other cured or processed meats.
2. Foods containing high levels of nitrites and nitrates âmay be highly predictable migraine triggers in some individuals.â. Cured and smoked meats, such as cold cuts, hot dogs, bacon, and sausage contain high levels of nitrates.oods High in Nitrates. Foods containing high levels of nitrites and nitrates âmay be highly predictable migraine triggers in some individuals.â. Cured and smoked meats, such as cold cuts, hot dogs, bacon, and sausage contain high levels of nitrates.