That Oral Decongestant in Cold Medicine May Not Work
A very common cold-aisle ingredient just failed its big test.
If your go-to cold medicine leaves you just as stuffy, you're not imagining it — a leading ingredient has an evidence problem.
The phenylephrine problem
Oral phenylephrine is the decongestant in many "non-drowsy" daytime cold and allergy products. In 2023, an FDA advisory panel concluded that, taken by mouth, it works no better than a placebo for congestion — it's largely broken down before it reaches your nose.
What actually helps
The old-school decongestant pseudoephedrine (kept behind the pharmacy counter) does work. So do nasal sprays — plain saline, or short-term medicated ones — plus steam and time.
The move
If oral cold medicine never seems to unclog you, that tracks with the science. Ask the pharmacist for pseudoephedrine, or reach for a saline or short-term nasal spray instead of relying on the pills on the open shelf.
Ask kiiwii
- Does phenylephrine work?
- What decongestant actually works?
- Is pseudoephedrine better?
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