I've had my BD Mirco-Fine Ultra Pen Needles changed to Glucoject Pen Needles, without being informed as to why. My advise on this, AVIOD !!!! Reasons are :-
1) The cap just keeps turning without stopping. Therefore, you will never know if you got a good seal. And yes if its not properly sealed you will get insulin leakage.
2) The needles WILL sometimes bend when pushed into your skin (sorry can't think of the correct word for push)
3) They also bend easily. You'll know when it's bent, when you have to apply a lot of force when pushing down on the plunger. Thats when you'll have to replace the pen needle for another and hope that does NOT bend !
4) You'll end up wasting several needles before you're able to inject correctly.
And yes ... the surgery had not even informed me of the change. I just thought that this was a subsistude and that I'll be back to my normal pen needles the following month. Only to get the substitute pen needles again for the next 4 months.
Onto the surgery now, but have to wait until 4pm tonite to see if they, GP, have change me back to my normal pen needles.
GP need to seriously get onboard, when they are making a change