Hector had a history of strokes?
I was watching the scene where Gus' partner got killed at Eladio's villa. I had never noticed the way Hector supported his arm with his other hand as he took the shot of tequila, common among people who've had minor strokes. In the same scene when standing over Gus I noticed the same hand (weak one) is curled, again a common symptom of minor stroke (or strokes). I'm guessing this is why he was on the heart meds, that when swapped for sugar, triggered the full stroke that paralyzed him. Still love that you can notice little details like that after several watches.