post #31 of 33
1/27/07 at 5:10am
The cold medicines on the shelves have phenylephrine whereas the stuff behind the counter has pseudoephedrine (I think someone else mentioned this).
I think the phenylephrine is crap when taken systemically (orally). It's worked when I have used it in a nasal spray, however. Pseudoephedrine has a much longer half life, so that's my theory as to why it works better orally than phenylephrine. If I take more than the recommended dosage of phenylephrine in tablets by themselves with the acetaminophen, DXM, and antihistamine separately , it works better for me... so it's possible the recommended dosage isn't high enough either.
It's a pain in the butt to go "behind the counter" but it's worth it to me! I haven't heard anyone say that phenylephrine works well orally since they changed the law (and I worked in a pharmacy at the time it happened).
Anyway, I hope you feel better by now. Men... can't live with 'em, can't live without 'em!