Pseudoephedrine is the one that is both proven to be effective and is the precursor to meth. Phenylephrine is the useless placebo that they put in the tablets on the shelf only because it can’t be used to make meth. It should be torn off the shelves because it’s useless.
The only reason the ‘PE’ (marketing term for the ineffective phenylephrine) tablets might be helpful is because they usually also have paracetamol (acetaminophen) in them which is probably the only bit that works. They don’t work as a decongestant for most people like pseudoephedrine does though.
The only reason the ‘PE’ (marketing term for the ineffective phenylephrine) tablets might be helpful is because they usually also have paracetamol (acetaminophen) in them which is probably the only bit that works. They don’t work as a decongestant for most people like pseudoephedrine does though.