Drug users are rejecting a new batch of syringes in Australia's needle exchange programs, saying they're too blunt and too flexible and that the tips are snapping off in people's arms.

The trend is causing alarm among needle and syringe program workers who say they have been inundated with complaints about them.

Health workers are worried about a new batch of syringes being given out at needle and syringe exchanges. Credit:Jessica Hromas

They fear the problem is driving people to use old and shared equipment that puts them at risk of HIV and Hepatitis C, and will cause people to abandon their services altogether.

Frontline workers told Fairfax Media that drug users have been reporting problems with the Terumo syringes for the past few months. The users say the needles are causing injuries to their veins and blood spillage - problems that can lead to bacterial infections and blood borne virus transmission. Some have required surgery to remove needle tips stuck in their arms.