Phenylephrine is completely worthless unless applied topically apparently, most of the over the counter decongestants don't really work that well.Liquid Mucinex Severe Congestion and Cough usually works pretty well for me.
Edit: Seems like it has the same active ingredients as what @God's Strongest Wardog recommended plus a bit of Phenylephrine HCI. So something along those lines.
A Common Nasal Decongestant Doesn’t Actually Work. What Should You Use Instead?
Nasal and sinus expert says there are far better and safer alternatives than phenylephrine that are available over the counter
www.bu.edu