4ml Bottle for Injection (25mg/ml)

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  • 4ml Bottle for Injection (25mg/ml) £79.19


Zycortal is a new treatment for Addison's disease (hypoadrenocorticism) in dogs. It is given by injection at approximately 1 month intervals. The precise dose and frequency is calculated by your vet in response to blood test results and clinical assessments made durong the initial phases of treatment.

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  • Sat: 9:00am - 1:00pm
  • Email: [email protected]

All prices include VAT where applicable.

Medication Datasheets

Reviews (59)

Summary of Reviews for Zycortal

Overall 5
Ease Of Use
Value For Money
Absence Of Side Effects
59 out of 59 (100%) customers would recommend this product.
5 stars (48 reviews)
4 stars (10 reviews)
3 stars (1 reviews)
2 stars (0 reviews)
1 stars (0 reviews)

Only verified purchasers of this product can leave a review.

55 Great drug
Verified Purchase

By on 7 February 2022

Keeping him alive. Injection once a month for Addisons

Customer recommends this product

55 Excellent product
Verified Purchase

By on 24 September 2021

Value for money

Customer recommends this product

45 Zycortal for my Adog Molly
Verified Purchase

By on 23 July 2021

It is increasing in cost which is distressing. VetMedic is cheaper I have just found out. It sometimes stings when given. USA have PercontinV which doesn't sting.

Customer recommends this product

45 Effective product
Verified Purchase

By on 26 March 2021

Very good product helps my dog with addisons desease

Customer recommends this product

55 Zycortal
Verified Purchase

By on 27 February 2021

a life saver for Candy as she has Addisons Disease. Saves me money as i inject her myself every month

Customer recommends this product

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Q & A

Below are some recent questions we've received regarding Zycortal, including answers from our team.

24 June 2021 at 5:27pm

Addisons dog

Sue Norris

Can I ask the vet for a 6months supply to keep costs lower?

  • VioVet Staff

Your vet can prescribe as much as they feel is safe for your pet. You can ask your vet this but dependant on your pet it may not be safe to prescribe this much at once.

16 May 2017 at 2:58pm

Shelf life

Abigail Newell

  • VioVet customer since 2009
  • From: Hertfordshire, United Kingdom

Can you tell me the shelf life of a 4ml bottle of Zycortal please. Thank you.

  • VioVet Staff

Shelf life of the veterinary medicinal product as packaged for sale: 3 years

Shelf life after first opening the immediate packaging: 120 days

8 June 2016 at 12:29am

Syringe and needle

Cathy Forrester

  • VioVet customer since 2016
  • From: Kent, United Kingdom

Does the syringe and needle come with it or do I need to buy them separately. Thank u.

Also can you tell me how I go about sending the pricrption. Can I send it by recorded delivery and where do I send the pricrption to.

Sorry this is the first time I'm ordering a pricrption drug online so I'm not quit sure how to go about it.


  • VioVet Staff

This product is just the liquid for injection, there are no syringes or needles supplied. It is normally administered by a vet who will have such things to hand anyway. If your vet considers that you can administer this yourself, he/she should give you full instruction on how to do this. Some vets will provide the prescription so that you can buy the medication more economically, then you can take it to the veterinary premises and a nurse or vet can inject it for you for a nominal fee. This depends on the individual vets. If you are to inject this yourself, you can buy syringes and needles from the website. (A 21g x 5/8" needle is normally used on a 1ml or 2ml syringe, depending on the dose to be given.) Personally I would be very wary of you giving the injection yourself unless you have proper training or experience to do this, but that decision is down to the vet writing out the prescription. Some people are giving the injections very successfully thensleves (just as they are for diabetic dogs).

Once you have a written prescription from your vet, you can scan it in and email it to us, or take a photo of it with your mobile phone and email that to us.You can fax it or upload it to the website when placing the order, or you can post it to us. The possibilities are endless! Details are all on the website. When we receive a copy of the prescription we might well ring your vet just to check that all is well before we supply against it. Your simplest option is to email it to us using [email protected]

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