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I'd been using the most well-known brand (manufactured in the U.S.), but Amazon seems to think buyers in California and several other states need a prescription for pen needles (they do not!). Or perhaps the change was related to the launch of Amazon Pharmacy in November of 2020.
The Pip needles are equally sharp, and thus no more painful than those manufactured by that well-known, national brand. They are also easy to unscrew from the insulin pens, and so far, I have not discovered any with their sanitary seals broken. I'd definitely buy again.
I love that these are so thin, and they are very compact as well. The other pen needles the nurses gave me have this spring loaded needle that always ends up going to deep and is much larger than this needle. Since I'm on blood thinners the other needles always end up bleeding. These are small enough where I don't have that problem, and since they are smaller in overall size I can get more of them into the sharps container before I need to replace it.
Seriously, these things are 1/4 of an inch. That's tiny. Makes me wonder if the medication is actually getting inside or stuck in a layer of fat! lol These screw on to my Saxenda pen perfectly, insert into my flesh easily, and I feel nothing. Highly recommended!