My son and I were recently ill, he was first, and bought antibiotics, after 3-4 days he had no change, then when I got his bug I also bought meds. After three days when there was no change whatsoever I checked the meds, I knew something was wrong when there was no improvement for either of us. My investigations showed no usual code ID bar and I checked out the lab in India to find no response. As some of you may be aware there are false meds on the world market. The US has been hit a lot with this problem. Now it looks like the DR has joined the fold. CHECK CHECK CHECK when you are buying meds. It is a common thing here for the poor to buy 2, 3 etc pills at a time as it is all they can afford. So check the box before you buy, check it has the instruction leaflet inside from a reputable lab. Maybe the pharmacies here know, maybe they dont. I am taking this further and will keep you posted.