And much like a drug dealer that would sell you crack or any other illegal drug, the people that stole these things, to possibly sell to other countries, apparently dont care about the people that could potentially get these meds from a doctor.
Actually they don't go to doctors.
In Spain an Mexico (other countries too, but I've personally seen this in those two countries while on travel), the people on the front lines for health care are not doctors or nurses...they are pharmacists. They diagnose, prescribe meds, give injections, etc. They also recommend OTC treatments too. Patients generally only go to doctors when pharamacists cannnot treat them.
When I was in the Pyrennees on assignment my American counterpart developed an odd skin rash while we were working in a server room. He asked me to take him to the Farmacia because the pharmacist on duty spoke French and Spanish, but not English. I had gotten a headache from the noise and thought that picking up some Advil was a good idea. The pharmacist diagnosed the rash as a chemical burn. Was he around any acids or solvents? Yes, changing out the industrial sized batteries. She prescribed a cream to treat it and told him to come back in 24 hour if it didn't get better, or if it got worse. (He was fine).
She asked me what was wrong, I said just a headache, she said she recommended Paracetemol. (Paracetemol? What the...?) I asked her to describe what it was, she said it was a headache medicine. Uh...that doesn't tell me much. Will it make me sleepy? Prolly not. Will it make me nauseous? Prolly not. I went back to the office and plugged the word in to Google...its what the rest of the world calls ordinary Tylenol.
So, picture these seemingly independent Farmacias, and someone comes in with an offer to sell them medicines. The pacaging is sealed...hey maybe the larger Farmacias would buy a whole pallet of the the meds. Everything looks like it just came from the factory. I can envision that happening where I was, which was basically a mountain resort town popular with the locals.
Now in Mexico, where things are far more corrupt, I can see uglier and nastier things happening with the medicines. But I would not be at all surprised if these meds end up on Farmacia shelves in some country or another and sold just like regular meds.
So here you have someone who's a diabetic, who's relying on insulin, and its not all its cracked up to be. But then again, the shady docs and other medical people dont care, because they're getting drugs/meds, from a different source, possibly cheaper, the dealers are getting what they want, which is cash, so in the end, its the innocent person thats the real victim.
I would be that's a particular risk with liquids. A pill that is the wrong size or color may be easily recognizable, but a liquid that you never touch? How woud you know?
So, whether or not these places know the meds are stolen or not is one thing, but in the case of the insulin, which was not stored properly (when it was stolen I'm assuming) it's given to the pharmacy, unknowingly, and they're dispensing it out. 
