Flonase, Nasacort and Nasonex are intranasal corticosteroid sprays — the most effective over-the-counter class for nasal allergy symptoms such as congestion, sneezing, runny nose and itchy, watery eyes. All three are once-daily, now sold over the counter, and calm nasal inflammation in the same way, so the real differences are narrow: which steroid, whether the spray has a scent, the youngest age it's approved for, and how quickly the full effect builds. They're used daily to prevent and control symptoms, and per MedlinePlus the full benefit develops over days rather than arriving with the first spray.
There's no single "best" — Flonase, Nasacort and Nasonex are clinically comparable intranasal steroid sprays, so the honest choice comes down to scent, approved age and personal preference. Nasacort (triamcinolone) is scent-free and alcohol-free and OTC from age 2; Nasonex (mometasone) is prescription-strength mometasone now sold over the counter, also scent-free and OTC from age 2; Flonase (fluticasone propionate) has a light floral scent and is OTC from age 4. All three are used once daily and build to full effect over several days to a couple of weeks, and all carry the usual nasal-steroid cautions — use only in the nose, watch for nosebleeds, and use the least amount needed in children. This is general information, not medical advice — ask a pharmacist or doctor.
| Flonase fluticasone | Nasacort triamcinolone | Nasonex mometasone | |
|---|---|---|---|
| Active ingredient | Fluticasone Propionate | Triamcinolone Acetonide | Mometasone Furoate |
| Our rating | 72/100 | Not yet rated | 70/100 |
| Typical price | — | — | $0.41 /g |
| Active steroid | Fluticasone propionate (50 mcg/spray) | Triamcinolone acetonide (55 mcg/spray) | Mometasone furoate (50 mcg/spray) |
| Scent / formulation | Light floral scent (formula contains phenylethyl alcohol) | Scent-free and alcohol-free (no fragrance or alcohol listed) | Scent-free, alcohol-free (no fragrance or alcohol listed) |
| Approved ages (OTC) | 4 years and older (do not use under 4) | 2 years and older | 2 years and older |
| Time to full effect | Improves in 1–2 days; full benefit builds over several more days | Can help the first day; up to about 1 week for full benefit | Improves in 1–2 days; 1–2 weeks for full benefit |
| Good to know | The original Flonase Allergy Relief (fluticasone propionate) has a light floral scent and is OTC from age 4; its label also lists relief of itchy, watery eyes. | Scent-free and alcohol-free, and OTC from age 2 — a good fit if smell or aftertaste bothers you. | Prescription-strength mometasone that became available over the counter in 2022; scent-free and approved from age 2. |
Ratings are our independent FDA recall-safety score. General information, not medical advice.
Flonase (fluticasone)
The original Flonase Allergy Relief (fluticasone propionate) has a light floral scent and is OTC from age 4; its label also lists relief of itchy, watery eyes.
Nasacort (triamcinolone)
Scent-free and alcohol-free, and OTC from age 2 — a good fit if smell or aftertaste bothers you.
Nasonex (mometasone)
Prescription-strength mometasone that became available over the counter in 2022; scent-free and approved from age 2.
Per MedlinePlus and their FDA Drug Facts labels, all three relieve the same nasal allergy symptoms and are meant to be used every day — the full benefit builds over several days (up to about a week for Nasacort, 1–2 weeks for Nasonex), so don't judge them after one dose. Pick by practical fit: Nasacort (triamcinolone) and Nasonex (mometasone) are scent-free, alcohol-free and OTC from age 2; Flonase (fluticasone propionate) has a light floral scent and is OTC from age 4. Use only in the nose — never spray into the eyes — and know that long-term daily use of intranasal corticosteroids can cause nosebleeds and, rarely, raise the risk of cataracts or glaucoma, and may slow growth rate in children, so use the lowest effective amount and check with a doctor before prolonged use or for a young child; these sprays are not for the common cold. Pharmaranks layers an independent FDA recall-safety score and a live NADAC cost-per-dose on top, so you can weigh safety record and price alongside these clinical facts. This is general information, not medical advice — ask a pharmacist or doctor, especially if you're pregnant, treating a child, or have glaucoma or another eye condition.