I've noticed that in the UK all phenylephrine based OTC medications also contain paracetamol (acetaminophen) and often caffine. They are just an expensive way to buy two very cheap compounds with an added bit of placebo effect from the flashy packaging.

I can't take pseudoephedrine due to high blood pressure and I've found that the most effective thing for me, especially at night, is paracetamol, a blast from a nasal spray, and one of those nasal strips that help keep your nostrels open a bit more. It's not quite up there with the real Sudafed, but it's generally enough to get me a good night's sleep.