Someone I love has chronic pain managed with (legally prescribed) opioids, and they have constant low-level anxiety that a bureaucratic mixup will result in their medication being denied (or heaven forbid they lose a prescription, or that they'll need a refill when their doctor is on vacation and the locum will be 'suspicious of drug seeking behavior'.
They had to sign a document that if they lost a prescription, they understood that they would be denied a refill, even though (a) there isn't actually any reason to physically hand them the piece of paper, it could all be done between the doctor and pharmacy, and (b) people with chronic pain typically also exhibit various degrees of 'being distracted' due to that same pain.
I could go on, and TBH, my friend hasn't had any gaps in getting their medication, but the current wave of anti-opioid hysteria is concerning.