Is that true for every type and format? You can walk into walmart and get regular and NPH insulin over the counter, no questions asked. Newer ones require a Rx.

I do think that the US is obnoxiously conservative, and far more medications should be OTC.

Instead, you cant even buy kidney friendly cat food without an expensive Rx from a vet and tons of controls. Heaven forbit someone buy it without proper consultation. Think of the Kittens!

Edit: after some reading, it seems that Canada and US are outliers in the west for allowing OTC insulin. UK and Europe requires Rx for all insulin.

Asia is more mixed. Japan, Korea: Rx required. China, Rx on paper, OTC in practice. India OTC

Is that true for every type and format

Yes, OTC for everything. I've heard that some pharmacists ask more questions about types which are commonly abused by body builders but that's about the extent of it.

Funny story since you mention cats: My brother's cat was diabetic and prescribed long acting insulin which cost $250/vial. I looked it up and... apparently it was just relabeled lantus, because of course nobody is going to waste money on a separate manufacturing line. Ended up buying it from my local pharmacy, without a prescription, instead of using the vet prescription.

> Instead, you cant even buy kidney friendly cat food without an expensive Rx from a vet and tons of controls.

Meanwhile, half the flea treatment medications available OTC are straight up toxins to the cat.