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.
Here are the top 10 nitric oxide foods : 1. Beets â Beetroot juice contains nitrates that are shown to decrease blood pressure and improve athletic performance. 2. Collard greens â Green leafy vegetables are high in nitrate content. 3. Nuts â Walnuts and Brazil nuts are rich in L-Arginine and vitamin E that are important for NO production. 4. Spinach â Contains high nitrate content and one of the excellent nitric oxide foods. 5. Kiwi fruit â Contains high vitamin C required for NO production.