Yes, the nasal spray is very effective. It is absorbed right where you need it and decongests your nose immediately. Consumers will still be able to buy it in a nasal spray. Because it is taken topically, there's no need for it to be metabolized.
You get some rebound congestion with the nasal spray, which is why an oral medication is preferred over the nasal. You don't want to use nasal phenylephrine all the time because if you quit using it, the congestion will be worse. You don't want to use it every day, whereas you can take oral Sudafed daily for congestion.