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.
The only way to determine this is to do a sulfur exclusion trial. Sulfur foods and supplements are those containing a thiol group. Some sulfur foods are not obviously sulfury (like coffee and chocolate). NAC is an example of a thiol supplement.The negative effects of sulfur on high cysteine people may occur over a 4-7 day period after the last sulfur ingestion.vailable here. Foods high in thiols. 1  artichokes, Jerusalem but not French. 2  asparagus. 3  bakery products containing whey, cysteine, eggs or enzymes. 4  bean curd/tofu milk. 5  bean sprouts. 6  beans of all sorts.