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Onsior for Dogs 40mg
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
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Onsior for Dogs 40mg

This item requires a vet's prescription

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  • Vet price £2.24
  • Our price £0.76
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Onsior for Dogs 40mg

Onsior for Dogs is a non-steriodal anti-inflammatory medication which helps to reduce fever, pain and inflammation.

The active ingredient in Onsior is Robenacoxib. It is part of the coxib class of non-steriodal anti-inflammatory drugs (NSAID) which primarily helps with the treatment of pain and inflammation associated with osteo-arthritis in dogs.

Onsior is a prescription item and will be sent once a valid prescription is received. Please follow the instructions given by your vet.

Onsior starts at £0.29 - Click here to view the full Onsior range

What is Osteo-arthritis? Osteo-arthritis is a term which refers to a form of chronic joint inflammation caused by deterioration of joint cartilage. This can also be known as degenerative joint disease which is the permanent deterioration of the cartilage surrounding the joints. Older dogs are at higher risk of developing this condition.

They are supplied in individual 5mg, 10mg, 20mg and 40mg tablets or packs of 28. They are a round, beige tablet flavoured with artificial beef to make administration easier but most dogs will voluntarily take this medication.

Save over 60% on Onsior for dogs by shopping with Pet Drugs Online.

Established in 2005 and now Britain’s Biggest Retailer Of Veterinary Prescription Medicines

How many tablets does my dog need? The recommended dose of Onsior is 1mg per kg bodyweight daily (with a range of 1-2mg per kg). For example:

2.5-5kg - 1x 5mg tablet

5-10kg - 1x 10mg tablet

10-20kg - 1x20mg tablet

20kg-40kg - 1x 40mg

40kg+ - 2 x 40mg 

 It is advised to issue Onsior at the same time every day.

Do not administer with food. Studies have shown that giving Robenacoxib without food or at least 30 minutes before or after food had better efficacy.

Do not divide or break tablets.

Wash hands after handling medication.

Onsior for Dogs is a prescription item and will be sent once a valid prescription is received.

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 36938 customer reviews

Product

Excellent once again. Easy transaction and delivery was within 2 days of order.

Product

So quick and easy to find the products I wanted to purchase for my cats 🐈
Questionnaire was easy to follow, covered breed, age, and any healthcare issue.
Set my mind at rest knowing that the service was more than just selling.

Product

Quick and fast service

Product

Very, very expensive, especially with pricey postage. Doesn’t cover all the worm types like others. Probably will take my dog to vet next time. Not worth 17 pound I had to pay. Got it cos my dog will not take tablets but at that price it is better to go to vets and get full treatment and protection.

Product

Cat wire carrier arrived very quickly and promptly. Very pleased.

Product

Exactly as ordered, prompt delivery by standard post. Will use them again.

Product

Excellent, efficient service. Drugs always arrived on or before time. Have used them for some time and will continue to use them as long as I have animals to care for. Would recommend them without reservation .

Product

Very satisfied with the products.

Product

Very professional from the first contact, the way I had to register my dogs made my feel this was a real professional outfit not some over seas scam. I will be using you again and will recommend you to everyone I deal with as a breeder I only like to recommend people I have dealt with. Delivery was also very prompt well done.

Product

The online service is easy to use and has order history available to help save you time when ordering the same products.

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