One of the supplements that some Penangites swear by is this Vitamin C supplement. It can be found in Penang and Bangkok under the name CDR - Calcium-D Redoxon. I’ve been taking it for the past few months.
I’ve found a close cousin - simply Redoxon - on the Walgreens website. Simply put - they are different - and I’ve come to the conclusion that they are in fact different products marketed under the same name.
The latter is made in the Czech Republic (I was not actually able to find the name of the manufacturer), is yellower rather than orange (almost the color of piss), and effervesces slower and less than the former which is made by Bayer in Indonesia.
Curious with all the lawsuits on trademark and patent infringements that there have not been one in this case.