Allergies are an immune system response that occurs when the body reacts to substances, such as bee venom, pet dander or pollen. The Mayo Clinic notes that signs of an allergic reaction include congestion, an itchy nose, watery or swollen eyes and peeling or flaking skin. In some instances, allergies can lead to hives, chest tightness, shortness of breath and wheezing. Fortunately, common allergy medicines can combat many of these symptoms.
Prednisone
Prednisone, commonly sold as Meticorten, Liquid Pred, Sterapred or Prednisone, is a steroid medication that treats allergies, ulcerative colitis, psoriasis and breathing disorders. Specifically, this medication decreases inflammation within the body. Drugs.com indicates that prednisone's less serious side effects include dizziness, headache, stomach pain, bloating, acne and dry skin. In some instances, prednisone leads to increased sweating and changes in the distribution of body fat. Serious side effects include visual problems, shortness of breath, rapid weight gain, depression and pancreatitis. Signs of pancreatitis include nausea, vomiting and stomach pain. Sometimes, prednisone can lead to low potassium and very high blood pressure. Signs of low blood potassium levels include confusion, increased urination, muscle weakness and a limp feeling. Symptoms of extremely high blood pressure include blurry vision, headache, seizures and an irregular heartbeat. Notify a physician when prednisone leads to these effects. The medicine is a tablet or liquid, taken daily.
Flunisolide
Flunisolide, commonly sold as Nasarel or Nasalide, is another steroid medication that treats year-round or seasonal allergies. Like prednisone, it also decreases inflammation. Drugs.com notes that flunisolide's less serious side effects include a sore throat, cough, changes in the sense of smell and burning or stinging in the nose. Its serious side effects include chronic nosebleeds, a poor appetite, weight loss, nausea and weakness. Notify a physician if these effects develop while on this medicine. Flunisolide is a nasal spray; two sprays are squirted into the nostril two or three times daily.
Cetirizine
Cetirizine, commonly sold as Zyrtec, also helps relieve allergy symptoms. According to MedlinePlus, cetirizine's less severe side effects include stomach pain, diarrhea, vomiting, excessive tiredness and a dry mouth. This medication's serious side effects include trouble breathing or swallowing. Go to the emergency room immediately if these effects develop. This medication is a tablet or liquid taken daily.
