I'm currently staying in Istanbul and need to buy an over-the-counter medicine that is a little rare. I went around a few pharmacies around my hotel, but they're all relatively small and don't carry the product that I need. How can I locate a list of big pharmacies that would likely have a lot of choice? Is there a particular keyword that distinguishes small pharmacies from big ones?
In the end I was able to find what I'm looking for by traveling to a pharmacy in one of the big shopping malls (Emaar Square Mall), which had a section with food supplements that I was looking for. I guess the answer is thus to travel to the nearest large shopping mall instead of trying local pharmacies in downtown Istanbul.
Cover the counter pharmaceuticals are also sold online in Turkey and a lot of pharmacies list their inventories there, hence uncommon stuff also appears. Then one can either contact the stores individually or just order online. Few potential webpages to look,