Synulox Antibiotic for Dogs & Cats

Synulox Antibiotic for Dogs & Cats
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50mg Tablets » Priced per Tablet
250mg Tablets » Priced per Tablet
500mg Tablets » Priced per Tablet
Palatable Drops » 15ml
RTU Injection 40ml

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  • 50mg Tablets » Priced per Tablet £0.42
  • 250mg Tablets » Priced per Tablet £0.99
  • 500mg Tablets » Priced per Tablet £1.95
  • Palatable Drops » 15ml £13.60
  • RTU Injection 40ml £25.02
  • RTU Injection 100ml £66.91

Selection of 6 products from

£0.42 to £66.91

Description

Synulox is the most commonly used antibiotic for dogs and cats in the UK. It contains amoxycillin and clavulanic acid which act together to provide a safe and effective antibiotic with activity against a wide range of bacteria. The tablets are flavoured to ease administration to dogs and cats and are given twice daily. They will normally be eaten from the hand, or can be crumbled and added to food. Synulox is safe to use during pregnancy and lactation in dogs and cats. Smaller animals can be given Synulox Drops, but they are not suitable for small herbivores such as rabbits and guinea pigs, which can develop serious enteritis following the use of this type of antibiotic.
Synulox LC is supplied in single-use syringes to treat mastitis in milking cows.

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Medication Datasheets

Reviews (21)

Summary of Reviews for Synulox Antibiotic for Dogs & Cats

Overall 5
Effectiveness
Ease Of Use
Value For Money
Absence Of Side Effects
21 out of 21 (100%) customers would recommend this product.
5 stars (14 reviews)
4 stars (6 reviews)
3 stars (1 reviews)
2 stars (0 reviews)
1 stars (0 reviews)

Only verified purchasers of this product can leave a review.

Antibiotics
Verified Purchase

By Fenella Howard on 29 July 2025

Do the job they should do.

Customer recommends this product

Great antibiotic
Verified Purchase

By Betina Adams on 29 March 2025

Life saver

Customer recommends this product

Excellent antibiotics
Verified Purchase

By Pauline Atkinson on 10 September 2024

I am very happy with these antibiotics. They have cleared the infection in my dog and she is back to normal

Customer recommends this product

Oliver’s tabs.
Verified Purchase

By Andrew Hardy on 15 August 2024

Seems to be working fine.

Customer recommends this product

Antibiotics
Verified Purchase

By Tina Claxton on 4 January 2024

Excellent and cheaper then vets

Customer recommends this product

1 person found this review helpful

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Q & A

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

16 September 2025 at 12:21pm

Dog ear infection

Is your product an antibiotic

  • VioVet Staff

Yes, Synulox is an antibiotic used to treat a variety of bacterial infections in dogs and cats. It contains the active ingredients amoxicillin and clavulanic acid, which work together to provide broad-spectrum antibacterial activity against a wide range of bacteria.

5 July 2025 at 11:02pm

Abcess

Jo Forman

Treatment for my 4.5kg cat with an infection on the face from what looks like a bite.

  • VioVet Staff

Since this is a Prescription Medication, it will be your Vet who will prescribe you this medication to treat an infection. We are unable to advice further.

11 April 2025 at 8:11am

Sharon smith

Do these work for a ear infection in a dog?

  • VioVet Staff

This is prescription medication, you would need to contact your vet.

21 March 2025 at 12:58pm

Cat, potential UTI and pregnant

Maya

Can these be used with pregnant cats?

  • VioVet Staff

I would advise you to seek veterinary advise, your vet will only prescribe this to your pregnant cat if it is safe and suitable.

18 October 2022 at 3:19pm

How much per day for a 14 stone Mastiff

Nicolle Brooks

My English Mastiff will not take the tablets prescribed by our vet. We have tries every way and think the only way now is liquid.
He’s very poorly with an infection after meniscus surgery. He won’t eat, just stands with his head down crying.

  • VioVet Staff

It is strongly advised you discuss this further with your prescribing vets. Synulox palatable drops are only appropriate for small dogs or puppies/kittens, the volume you will need to give per dose will be way too large for a Mastiff to use the drops appropriately.
There are many other antibiotics available, including injectable. Your vet will be able to advise.

5 October 2022 at 12:45am

Prescription

Andrew

Does this product need prescription?

  • VioVet Staff

Yes it does as this is a prescription only medication (POM-V licensed). More information on written prescriptions can be found in the link provided here.

17 July 2022 at 10:24pm

Administration

Louise

How many 500 mg antibiotics do I need to give my large Barbados for a tooth abscess ?

  • VioVet Staff

This is a prescription only medication so you will need to discuss the correct doseage with your vet, they will need to write a prescription for your for us to dispense it to you.

18 June 2022 at 9:37am

Injection or oral

Cheshycats

Hi the option that says injection? Is this and oral injection just straight into the mouth with a syringe?

  • VioVet Staff

This is a prescription only medication and so you should only use it alongside your vets advice. The injectable version (RTU injection) must be injected by the subcutaneous or intramuscular route. The oral version (Palatable drops) can be administered via syringe into the mouth, or onto the feed.

9 April 2022 at 8:01am

How to give

Chloe

The tablets are very hard and quite big for a cat. Is there a suggested way to give? Cat is very poorly and not eating so easiest way possible required please. Too big to force pill, I just end up covered in it.

  • VioVet Staff

The datasheet for this medication states the following regarding administration:
By the oral route. Synulox palatable tablets are often accepted from the hand even by sick cats and dogs. Alternatively, the tablets may be crushed and added to a little food.

If you are still struggling after trying the above then it is advised you contact your vet. An alternate option may be required.

8 April 2022 at 12:11pm

Hotspot skin wound

Pinky

My dog jas had two hot spot wounds open up on the back of his neck and behind one ear. Will these antibiotics do the job?

  • VioVet Staff

Antibiotics are prescription only medications and so can only be used alongside a prescription from your vet. These antibiotics are often prescribed for skin conditions and so they may be appropriate but you will need to contact your vet for them.

If you are treating a hot spot (a superficial skin infection) then surface scrubs like Vetruus CLX Wipes are a good choice. Ideally the area should be clipped to clear any hair and if cleaned with a good wipe twice daily then it should clear within 5 to 7 days. It is important to know that this is a hot spot though, if you are unsure you should chat to your vet.

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