Happened to get this introduced by the Chinese medical hall's owner, when someone has a very bad ulcer, and my throat had been itch to sore. It's when the tradition sea salt water came to no avail, this made handy and effective.
Googled a bit on it, apparently it is made of natural products. Oh I love it then. Made in Germany. I would think its more worth the money compared to the bottled Listerine. RM25+ for a small bottle like this, needs only dash oh drip , mix with water to gargle. Tried it out, and it's effective. Taste good too.
Next in my natural lab, I may experiment some mount wash instead. Found some interesting recipe while googling, it's fun to a naturalist!