Doctors give trusted answers on uses, effects, side-effects, and cautions: Dr. Turck on does flonase raise blood pressure: Antihistamine shouldn't raise blood pressure. FLONASE products are allergy relief medicines that work right in your nose to help block your allergic reaction at the source to relieve the symptoms that make you uncomfortable. Flonase is a nasal spray containing fluticasone propionate. Fluticasone propionate is a corticosteroid that prevents the release of substances in the body that cause inflammation. Flonase has also been associated with hypersensitivity reactions (for example, skin rash, itching, facial swelling, and anaphylaxis). The recommended starting dosage of Flonase in adults is 2 sprays (50 mcg of fluticasone propionate each) in each nostril once daily (total daily dose, 200 mcg). Drug Hi, flonase is a synthetic corticosteroid and some people may have allergic reactions to this medication. It has an elimination half-life of approximately 7.8 hours. Breathe easy with any of our 9 Flonase coupons for May 2019! Top discount today: $10.00 Off! Other adverse reactions with Flonase Nasal Spray observed with an incidence less than or equal to 3% but greater than or equal to 1% and more common than with placebo included: blood in nasal mucus, runny nose, abdominal pain, diarrhea, fever, flu‑like symptoms, aches and pains, dizziness, and bronchitis. INDICATIONS. FLONASE® Nasal Spray is indicated for the management of the nasal symptoms of perennial nonallergic rhinitis in adult and pediatric patients aged 4 years and older. What does Flonase do? Flonase is a nasal spray purposed to relieve allergy symptoms including nasal congestion, runny nose, sneezing, itchy nose, itchy eyes, and watery eyes. How to use Flonase Spray, Suspension. If you are using the over-the-counter product to self-treat, read and follow all directions on the product package before using this medication.