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Caninsulin Cartridges (40iu/ml)
Simple steps for pet prescriptions
  • 1Get a prescription from your vet
  • 2Place your order with Pet Drugs Online
  • 3Attach a prescription and tell us about your pet, read more
  • 4Our vets will double check your order
  • 5Your order is dispatched right away
Next day delivery*
Place your order by 12 noon and we'll get it to you the next working day.
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*Mon-Fri only, products must be in stock
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Caninsulin Cartridges (40iu/ml)

This item requires a vet's prescription

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35765 Reviews
  • Our price £13.52
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Caninsulin Cartridges (40iu/ml)

Caninsulin Cartridges (40iu/ml) are for the treatment of insulin deficiency (diabetes) in dogs and cats. It is supplied in packs of 10 x 2.7ml cartridges for use with the Caninsulin VetPen.

Caninsulin Cartridges are a prescription item and will be sent once a valid prescription is received. An additional £5.99 will be added to the order, as it is required to be delivered next day and be signed for. This item will only be dispatched Monday-Thursday.

Save over 30% on Caninsulin Cartridges when you buy from Pet Drugs Online.

Caninsulin needs to be kept below 25°C to ensure its efficacy. During periods of hot weather dispatches may be temporarily delayed.
Keep out of reach of children.
Shelf life of the veterinary medicinal product as packaged for sale: 2 years
Shelf life after first opening of the immediate packaging: 28 days

How to Administer

Caninsulin should be administered once or twice daily. Always make sure to alternate the injection site on a daily basis to avoid irritation. Before each use, invert the vial a few times until a homogenous suspension is obtained. A 40 IU/ml insulin syringe should be used.

The cartridge should be used with VetPen. Within the package will be a leaflet with detailed instruction for use to be followed.

If the needle is removed from the skin too early, sometimes small drops of insulin may leak from the needle, this can mean an incomplete dosing. If this occurs, do not attempt to re-dose. Wait and give your pet its usual dose at the next injection.

To check the most up to date information about this product, please read its Summary of Product Characteristics (SPC) on the Veterinary Medical Directorate’s (VMD) Product Information Database:

View summary of product characteristics (SPC)

For orders over £29 postage is free. For orders under £29 we charge £2.99 for postage

For Light items (under 2kg) our standard method is Royal Mail Second Class (there are a few exceptions, so if in doubt check our Delivery page).

To get it faster you can upgrade Light items to Royal Mail 1st Class or a Guaranteed Next Day Courier service, Saturday Courier or even before 12 noon services. There's a small fee, but if you're in a hurry they are worth considering. To qualify for next working day delivery, orders must be placed before 12 Noon Monday to Thursday. There is no standard Saturday courier delivery.

Heavy items weighing 2kg and more are sent via courier. If ordered before noon Monday to Thursday, Heavy items will be delivered next working day. Heavy items ordered after 12 Noon Friday, or anytime Saturday and Sunday will dispatched on Monday for a Tuesday delivery.

Please note that if you are purchasing a mix of Light and Heavy items at the same time, these will be sent separately. The Heavy items being sent by Courier, the Light items by Royal Mail Second Class.

All exceptions to these guidelines are noted in the product description.
For more information, view our Delivery page.

If you see the "prescription required" sign next to an item you’d like to order, it means the item can only be issued with a prescription. While you can add these items to your shopping cart and pay for them along with other non-prescription products, we can’t dispatch them until we’ve received a prescription.

Product reviews for prescription products are not allowed by the RCVS. But here is what our customers say about our service:

Service reviews have been compiled from 35760 customer reviews


very efficient service, good website - easy to use, cheapest products I could find online


Efficient service if a little slow delivery


Easy efficient website, competitive prices, and fast delivery.

That works for me!


Quick, efficient and good pricing!


Good price and prompt delivery.


Good fast service at the right price for quality medical


Excellent, prompt and simple service.


Compared websites for Advantage Flea Treatment and found Pet Drugs to be the cheapest (inc Postal fees). Item dispatched speedily. Item well packed. Would highly recommend.


The person I spoke to on the phone was very helpful. For some reason i had trouble ordering on the website, so she took my order over the phone and explained delivery charges, all done in 5 mins. The order came by royal mail and was a day earlier than expected.

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