Marmema's post is false. Neither syringe nor insulin can be purchased "over the counter."
Interesting, my son has diabetes and we have purchased both over the counter for about 12 years now. Additionally I often buy entire boxes of syringes for vaccinating our goat herd.
You may live in a state where it is not allowed, but you should be careful in posting about things.
"...and most forms of insulin are accordingly available over the counter in the United States..."