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.
Headaches. Calcium propionate, like all forms of propionic acids, is linked to migraine headaches. Fermented foods, which naturally produce calcium propionate, have historically been linked to headaches; however, no clinical trials have shown a statistically significant link to this claim.alcium and sodium propionate have the potential to permanently damage your stomach lining by exacerbating gastritis and inducing severe ulcers. You should avoid fast-food products that have a higher ratio of calcium propionate, such as buns, pastries and pizza.