I used to throw my empty insulin cartridges into the bin, I now use an insulin pump so have to fill the cartridges for this from the old fashioned vials.. The empty vial and the finshed insulin pump cartridge all gets put into the waste bin..
Insulin pens aren't exactly clinical waste product, but actually come under the safe disposal of medication regulations!
Which basically means, that any full or partly used medication must be returned to the chemist who prescibed it for self disposal!!! Any empty packaging can be thrown in normal waste bin! so the pen is nothing more than empty packaging..
Even used test stips aren't considered clinical waste! Check the insert leaflet it tells you these can be disposed in normal waste!!!
This type of debate, actually shows that health and safety gone made in some circumstances indeed...
I remeber the days, that we used to put our used syringes into a old drinks can, when full tape securely and into the rubbish bin..