Looking at the mentioned prices on the review, I'll wager that for that 10% which might (!!) be supported science you are better off going to a store which is 1) cheaper 2) doesn't resort to pseudoscience.
Pharmacies here (NL) have two points of sale: one for prescribed medicine, one for over the counter. But the over the counter also sells other stuff such as a thermometer for babies, pads, tampons, and candy such as liquorice and peppermint. IMHO a pharmacy should not sell candy, or any pseudoscientific BS for that matter. Other than that you're better off going to such a store -if they got what you need and are open, that is.