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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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Caninsulin Cartridges (40iu/ml)

2.7ml cartridges x 10

This item requires a vet's prescription

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  • Vet price £77.54
  • Our price £49.73
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Estimated dispatch within 24 hours (subject to stock) See our delivery options

Prescription Info.
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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 37848 customer reviews


Very quick delivery with me the next day good price very Happy.


Excellent service quick del.


A very reliable, trustworthy and value for money service.


Really easy to use for prescription items and very good prices. Delivery fast and efficient. Would recommend to my family and friends


Excellent service - drugs delivered in good time


Bought frontline flea treatment at a fraction of the prices my vet charges and all with fast delivery! I would and have recommended this website.


excellent service. The food, which was sent by carrier arrived the day after it was ordered The capsules took rather longer


excellent prices, excellent customer services.


Ordering was okay and the following day we had an e-mail saying delivery would be the next working day. We waited in all day but no delivery arrived. The following morning another e-mail arrived saying it would be delivered that day. No apology or explanation. Fortunately this time it did arrive. Almost certainly a problem with the courier rather than Pet Drugs Online, but very irritating none the less.


So much cheaper than buying from the vets ,all medication is checked by a vet before its dispatched, so you know your buying safely online for your only complaint was i asked a question vis email and no one replied to it.

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