I accidentally took a backpack with fake vials and syringes through TSA. I'm a nursing student and forgot they were in there. Surprisingly, they didn't say anything about it.
I always take my testosterone and needles on the plane. Probably taken around 10 flights with testosterone in my hand luggage and never had a problem. I usually put my needles in my checked in baggage though.
And also probably depends on the country your travelling to. If they try confiscate it, just say you left your prescription at home. Worst case scenario is they just dispose of it.
I accidentally took a backpack with fake vials and syringes through TSA. I'm a nursing student and forgot they were in there. Surprisingly, they didn't say anything about it.