This problem with processing credit cards in these pharmacies could be due to the interference of LegitScript, an unscrupulous organization backed by the nefarious profit-seeking pharmaceutical industry who try to close down or make life difficult for prescription-free pharmacies selling cheap drugs.
LegitScript have an agreement with the VISA credit card international network, so that when LegitScript snap their fingers, VISA responds like a poodle, removing the credit card processing facilities from any pharmacy that LegitScript say.
It's not that these pharmacies are dodgy, it's just that they may be having their credit cards facilities taken away by LegitScript.
I am glad I took the time to set up bitcoin payment wallet on my computer. This is a very convenient and easy way to pay, easier than credit cards, and makes life a lot simpler, especially since some pharmacies give around 10% discount for bitcoin customers.
Instructions to set up a bitcoin wallet on your computer, tablet or smartphone are given in
this post.[/QUOTE
I've used bitcoin many times recntly