I am considering buying rapamycin from Turkey, as it seems the closest choice in the EU so far.
Can you share your sites in Turkey where you or someone you know have bought rapamycin from? (and if possible some details like date of purchase, manufacturer, brand, quality etc, is it ok to carry a bag with supplements and rapamycin through check-points)
Most Turkish pharmacies don’t ask for prescriptions so you should be able to go to any pharmacy and buy it. However, they might not have it in stock so you could call a few before. It’s OK to fly with supplements and drugs and go through safety. There are two pharmacies at the airport (IST), before passport control, you might be able to buy it, they speak English but better to call them beforehand as well (and they might be more expensive).