I have 10 year old border collie x bitch, which has had diabetes for 3 years.

She has a strict diet and receives an insulin injection twice per day of 17 mls

We have recently been switched to "caninslin" with syringes of the same name.

We have noticed the costs have increased (not that it was ever cheap) to the stage where we use a bottle of insulin costing $47 every 9 days. We use about $5 in syringes in the same time.

Can anyone advise us of alternative types of insulin, or sources of supply that will enable us to reduce this burden?