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.
Dark green leafy vegetables and beets tend to be among the foods highest in natural nitrates. If trying to increase your nitrate intake, eating arugula, celery, lettuce, beets, spinach, watercress and chervil are good options as they contain more than 250 milligrams of nitrates per 100 grams, or 3.5 ounces.trawberries and melons are the fruits that help you produce the most nitric oxide, and other fruits, including raspberries, cherries, bananas, raisins, prunes and figs, also provide some nitric oxide. These are small amounts, however, with a banana providing less than 5 milligrams of nitrates in each 100-gram serving.