ACP for Dogs and Cats

ACP for Dogs and Cats
2mg/ml for Injection » 20ml Bottle
10mg Tablet (Priced per Tablet)

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  • 2mg/ml for Injection » 20ml Bottle £164.61
  • 10mg Tablet (Priced per Tablet) £0.47

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£0.47 to £164.61


ACP is available as an injection or as 10mg tablets and the active ingredients is acepromezine. It is used as a mild tranquiliser or sedative for dogs and cats. It is no longer licensed for use in horses. ACP produces a mild to moderate sedative effect. Increasing the dose will not usually cause deeper sedation, but will instead make the sedation last longer. ACP also has some anti-emetic, anti-histamine and other effects. The injectable form is available for use by veterinary surgeons.

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Medication Datasheets

Reviews (3)

Summary of Reviews for ACP for Dogs and Cats

Overall 4
Ease Of Use
Value For Money
Absence Of Side Effects
2 out of 3 (67%) customers would recommend this product.
5 stars (1 reviews)
4 stars (1 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 help from Viovet
Verified Purchase

By on 1 March 2020

The product helps sedate my old dog at night. I would like to say how helpful Viovet are in helping sort out the prescription from my vet.

Customer recommends this product

35 ACP
Verified Purchase

By on 2 November 2017

On this occasion it was ineffective. It would not be appropriate for me to recommend this product as i’m not a vet. Customer service was excellent.

Customer does not recommend this product

45 Useful if used carefully
Verified Purchase

By on 10 April 2017

We've tried all sorts of other pills and potions to destress one of our dogs who hates long journeys in the car. She gets very distressed. You have to use ACP carefully as it does have a very distinct sedation effect.

However, get the timing of administering the dose right. Don't give it way before you intend to travel as it will not work in our experience. About 30 - 45 minutes before commencing a long journey appears about right to us.

Your dog will then hopefully be much calmer for a journey. Does not work 100% of the time but certainly works more often than not.

If is doesn't appear to be working DON'T ADMINISTER A FURTHER DOSE.

Customer recommends this product

Q & A

Below are some recent questions we've received regarding ACP for Dogs and Cats, including answers from our team.

23 July 2021 at 8:05pm

Safe for old lab terrified of car journeys?

Debbie P

Just checking this is a safe option for our old lab who becomes rigid with fear and shakes and pants on car journeys. She is also taking vivitonin and previcox.

  • VioVet Staff

ACP is a prescription only sedative medication that can be used for anxieties like this. However it does not remove the fear itself, it will just make your dog sleepy during the fear. This means your dog's fear may actually be worse, still fearful but less able to react and move when experiencing the fear. It is recommended you discuss the use of this medication with your vet as it may not be the most appropriate option.

We have a wide range of oral calmers you can try though that would be suitable. Here is a link to these on our site.

4 April 2021 at 3:27pm


Glen Taylor

Are ACP tablets safe for a dog (20kg) to take while taking Vivitonie. 100mg twice a day.

  • VioVet Staff

If your dog is on Vivitonin for a certain condition then I advise running past your vet whether to continue to use ACP tablets as this may interfere with the underlying disease they are treating. ACP is also a prescription medication so the specific doseage will need to be recommended by your vet anyway.

1 April 2021 at 9:03pm

For car travel


I'm planning a long car journey for a holiday and would like to take my dog, but she gets very over excited when we go in the car. Would it be safe to use this medication on her?

  • VioVet Staff

ACP tablets are a prescription only sedation drug and so can only be dispensed and used alongside veterinary advice. They an be used for car travel as you describe but usually only if the fear or excitement is moderate/severe. If you are looking for over the counter calmers then I recommend our own brand SettleMe range. These can be given 1 to 2 hours before the intended effect is required and work great for mild/moderate fears or excitement.

7 May 2016 at 10:02am

Acp for horses


Hi just wanted to know why you can't use Acp tablets on horses as I can't get the paste near my horse so the tablets would be great if I could get some

  • VioVet Staff

ACP is ACP, so either formulation should work if they are given at an appropriate dose etc. However vets are supposed only to prescribe licensed medication and the tablets are licensed for dogs and cats. In the past they were often used for horses but when the gel was introduced and licensed for horses, this became the automatic "correct" treatment. It is up to your vet if they want to prescribe an unlicensed drug. You can ask them - they might feel able to do so if you have a good reason, but they are in a difficult position legally. We are able to supply whatever has been prescribed, but nothing else.

28 October 2015 at 8:57pm

Is there any medical conditions in a cat that would make ACP a risky choice for sedation?


is there any medical conditions in a cat that would make ACP a risky choice for sedation?

  • VioVet Staff

ACP is generally very safe as long as it is not over-dosed. Your vet should ensure it is safe before prescribing ACP knowing your individual cat.

11 September 2015 at 10:55am

ACP for cage rest cats?


My cat was run over a fortnight ago. He has a broken pelvis. Cage rest was fine for the first 4 days now he's going mad. He climbed the inside of his cage and fell and is now walking oddly (appointment made with vet). He won't rest! I was wondering if ACP is compatible for use alongside metacam? Mostly for night time (when he fell) and when we're having to go to work (to pay the vet bills) because he's going to do himself a mischief.

  • VioVet Staff

ACP might help, you will need to check with your vet about this. It is not a great plan to be used for weeks though. Sometimes confining a cat to one room in the house works OK and it is remarkable how well most cases of fractured pelvis heal, despite what cats do. You will need to discuss this with your vet and make a plan with him/her.

5 March 2015 at 12:15am

Sedating sheep?

Emily Lorenz

When I moved into my house last March, the house came with 4 sheep. As the new spring approaches, it's coming time to shear them. Would this work to sedate sheep long enough to keep them calm for shearing? They're very scared of people. Hoping this would make them calm. Would it?

  • VioVet Staff

ACP does have an effect in sheep, but can be unpredictable in very nervous sheep and may seem ineffective, even with quite a large dose.It is prescription only anyway, so your vet would have to write out a prescription for what they feel would be effective. Xylazine (Rompun) would be many vets' choice for this job. We could get some for you if you send us a prescription.

21 April 2014 at 11:07pm

Wanting to purchase dog sedative

Alma Vollans

Hi there. I am wishing to purchase a dog sedative. My dog is a very anxious one which is very nervous in crowded situations. I get married Saturday and I am concerned that he will be very distressed on the day.

  • VioVet Staff

Medication like this has to be prescribed by your vet and has to be used with care, so we will not be able to help in this instance. Possibly your dog could be looked after elsewhere for the day?

28 October 2013 at 8:30pm

Can they be used on a nightly bases for several years as my basset won't settle


My bassett has been on these on and off for two years especially when its windy a raining now this month I'm on his thirteenth tab stopped it several times and he was stressed and barking and wouldn't settle spent night on sofa with him I have a feeling I might need him on them for a few months not sure vet will alow such long use he's on ten mg could he be on them for a year if needed he only has several years left as is nearly eleven

  • VioVet Staff

ACP does seem to be very safe, but it is not usually given every day for years.They might well not work so well after a while. There are quite a few herbal products which are intended to be used for the same thing and they appear very effective for some dogs, though not all. I would suggest trying a few alternative products so that you are not using the same thing all the time. If you hover your cursor over "Dogs" on the website menu, then click on the field labeled Behaviour & Brain, there are a lot of alternative products you could try. Zylkene works very well for some dogs, or Calmex seems to be popular. Adaptil works well for some too. Valerian compound is a very traditional treatment and still sells well too. Lots to choose from!

18 August 2013 at 5:13am

ACP tablets to treat 6 month female pup with ADHD


6 month mixed breed medium sized pup post desex operation( with ADAH) quietens down after 1 ACP tablet twice a day for 15 days. Is it dangerous to keep her on this medication, if so for how long. Healthy pup but with ADAH very hard to control and has possible signs of being savage as she matures. Elderly owner I wonder if there is any other safe medication to handle her complaint. Thank you, Lorna

  • VioVet Staff

Long-term use of ACP is not recommended. Your dog might tend to become tolerant to the medication, and after a while it might start to have unexpected or adverse effects. There are herbal treatments which work well for some dogs, such as Dorwest Scullcap and Valerian tablets, which appear to be very safe. Zylkene tablets will have a calming effect on some dogs, though these are more expensive.

At just 6 months old, we would recommend getting advice from a qualified and experienced behaviourist, who will almost certainly have some good advice which would be worth following. This is much more likely to work well long-term than relying on medication. You could contact the Association of Pet Behaviour Counsellors at for the best advice. We have heard of many surprisingly good responses from this approach.

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