You just need to find the right chemist. I have about 5 chemists that I'll regularly visit, depending on the need. One chemist has a great range of natural remedies, another has cheap baby formula, one has a particular cough lolly that I like, one sells a brand of ear plug that fit my ear better than the regular ones and one chemist agrees that PE isn't as effective as pseudo. She'll suggest the good stuff if she can see I have a cold without me having to ask. I guess also getting to know the pharmacist on a personal level helps. I personally don't actually like the feeling I get off psuedo... it can give me weird OOBE type feelings and make it difficult for me to socialize, but it does the job when I have a runny nose. I always hold off on using any cold and flu tablets as long as I possibly can. One more point, to the OP (although the thread is pretty old now). I've worked a lot in retail and have had to become familiar with the Trade Practices Act. You are right that you are entitled to a refund for goods which are not fit for the purpose for which they are sold, but your situation doesn't actually fit in to that category. Phenylephrine is still a decongestant (albeit a not particularly effective one) which is the purpose for which the medication was sold to you. Had you asked for a decongestant and the chemist sold you a pack of ibuprofen, then the product would not be fit for the purpose for which it was sold. Your situation is more like buying a tin of instant coffee and taking it back to the supermarket because it doesn't give the same caffeine kick as an espresso. The instant coffee is (arguably) still coffee but doesn't suit my individual needs. There's no "fault" (at least not yet proven) as such in the product, it just doesn't suit you, which is classified as a change of mind. Unfortunately, you have no legal rights in getting an exchange for a change of mind, although some retailers will offer a limited change of mind exchange period. Having said that, had I been the chemist, I would have refunded your money to keep you happy and hopefully get your future business.