UK Registered Veterinary Retailer

Stomorgyl Tablets for Dogs & Cats

Stomorgyl Tablets for Dogs & Cats
2 » Priced per Tablet

  • 2 » Priced per Tablet £0.39
  • 10 » Priced per Tablet £0.89
  • 20 » Priced per Tablet £1.39

Selection of 3 products from

£0.39 to £1.39


Stomorgyl Tablets contain two antibiotics, metronidazole and spiramycin. These act together to combat the types of bacteria often found within the mouth. Stomorgyl is used for infections around the teeth sockets (periodontitis) and related problems in cats and dogs. The coated tablets should be given whole, once daily for 5 to 10 days.

Need help or advice? Contact us:

  • Landline: 01582 842096
  • Mon - Fri: 8:30am - 5:00pm
  • Sat: 9:00am - 1:00pm (Collections only)
  • Email: [email protected]

All prices include VAT where applicable.

Medication Datasheets

10 » Priced per Tablet

Stomorgyl 2, 10, 20 Film-coated Tablets

Qualitative and quantitative composition

Three strengths are available:

Stomorgyl 2: Spiramycin 150,000 IU and Metronidazole 25 mg

Stomorgyl 10: Spiramycin 750,000 IU and Metronidazole 125 mg

Stomorgyl 20: Spiramycin 1,500,000 IU and Metronidazole 250 mg

Colourants: Ponceau 4R 0.06 mg Titanium dioxide E171 0.20 mg

For the full list of excipients, see below.

Pharmaceutical form

Film-coated tablet. Pink circular convex scored tablet.

Clinical particulars

Target species

Dogs and cats.

Indications for use

For the treatment of periodontal and related oral conditions in dogs and cats.


Do not use in animals with a known hypersensitivity to spiramycin or metronidazole.

Special warnings for each target species


Special precautions for use in animals


Special precautions to be taken by the person administering the product to animals

In case of accidental ingestion obtain medical advice if needed. Wash hands after use. Should direct skin contact occur, wash affected area. Should accidental eye exposure occur, flush the eyes immediately with water and seek medical attention if needed.

Adverse reactions

None known.

Use during pregnancy, lactation or lay

Safety in pregnant dogs and cats has not been demonstrated.


The product should not be used concurrently with other antibiotics of the macrolide group.

Amounts to be administered and administration route

By oral administration. For dogs and cats, 23.4 mg spiramycin and 12.5 mg metronidazole/kg bodyweight, once daily for up to 5 to 10 days.

Stomorgyl 2: 1 tablet/2 kg bodyweight once daily for 5-10 days.

Stomorgyl 10: 1 tablet/10 kg bodyweight once daily for 5-10 days.

Stomorgyl 20: equivalent to 1 tablet/20 kg bodyweight once daily for 5-10 days.

Do not break or crush the tablets.


No signs of toxicity were seen in cats receiving 5 times the recommended dose, or in dogs receiving 8 times the recommended dose.

Pharmaceutical particulars


Aluminium Oxide (hydrated), Sorbitol, Dextrin (white), Gelatin, Citric acid monohydrate, Magnesium stearate, Wheat starch, Ponceau 4R (E124), Titanium dioxide (E171), Hypromellose 6 m Pa s, Polyethylene glycol 2000.

Major incompatibilities

None known.

Shelf life

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

Special precautions for storage

Do not store above 25 °C. Store in a dry place. Protect from light.

Immediate packaging

Packs of 5 blister strips each containing 10 tablets.


Any unused product or waste materials derived from such products should be disposed of in accordance with local requirements.

Marketing Authorisation Number

Vm 08327/4083-85

Legal category

Delivery Information

How quickly do you deliver?

Under almost all products on our website is an Estimated dispatch time, check this for a delivery prediction specific to the item you are looking to purchase. These badges are updated live based on the stock levels we have and also those of our suppliers - so are usually very accurate, but cannot be guaranteed. In more general terms, we aim to dispatch all orders within 1 working day of receiving payment (and a prescription if required). If we cannot do so within 3 working days we will contact you by email.

What do you charge for delivery?

For UK delivery, we charge the following:

Order Total Weight Delivery
£0-£28.99 Under 2kg £2.99
2kg+ £4.99
£29-£38.99 Under 2kg Free
2kg+ £4.99
£39+ Under 2kg Free
2kg+ Free

Prices quoted are for delivery to all parts of mainland UK except certain Scottish postcodes (where the price is higher for items sent by courier. Delivery of food abroad (including Channel Islands, N. Ireland and other islands around the UK) is charged at a higher price and free delivery is not available. Temperature controlled products, such as Insulin, are also not always subject to the standard and/or free delivery options.

For full information on our delivery charges, including prices on heavy deliveries to Scotland and abroad, see our delivery information page.

We can deliver most items to all around the world, but prices do vary. The majority of light weight orders (less than 1.5kg) can be delivered for a flat rate of £10. For an accurate estimate of the delivery charge, please put the items you require in your basket and use the "Estimate Delivery" system on the shopping basket page (you only need to enter your country and postal/zip code) for a quick quote. For deliveries to the USA you may need to go to the checkout page and enter your full address to get a quote (as some services need your state in order to quote too). For more information on international deliveries, please see our delivery information page.

Delivery of aerosols

Due to restrictions aerosols can't be sent by Royal Mail. We appreciate your understanding.

Delivery of temperature controlled items

Some products, such as insulin and frozen food, need to be delivered in insulated packaging to prevent them from getting too warm (or too cold) during transit from us to you. Purchasing any of these items in your order will result in a £1.99 charge being added to the total to cover the high cost of the insulated packaging materials. You only pay the £1.99 once per order, regardless of how many temperature controlled items you purchase in that order.

How do I cancel or return an order?

Please call us as soon as possible if you need to amend or cancel an order on 01582 842096. If your order has been processed for dispatch we will be unable to cancel or amend the order. You will however be able to return your product for a full refund*.

To return an item, you must contact us by phone or email to arrange this BEFORE posting any product back to us. We will explain the process at this stage for you.

*For full details on returns, see our terms and conditions page.

Reviews (2)

Q & A

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

15 December 2015 at 11:56pm

Can the tablet make my cat sick?


My cat feels bad and with temperature and her breathing is quite fast and that all happened after i gave the antibiotic. Btw i broke it in to two pieces would that cause he feel unwell?

  • Non-Executive Director

These tablets are coated and it is advised that they are swallowed whole, not broken. I am uncertain why this is the case because both of the antibiotic ingredients are safe to use in cats. If she seems unwell in any way it is best to contact your own vet for advice. A check up might be needed.

21 November 2015 at 3:43pm

Stomorgyl 10 uses


Hi, I've just been given this tablet to treat my puppies diarrhea, but after googling them it says it's used to treat oral infections?? Have I been given the wrong antibiotic?

  • Non-Executive Director

I think your vet will have intended to use this antibiotic. The license granted for a medicine has to be very specific and is often very limited. However many vets (and doctors) will prescribe antibiotics for purposes other than the licensed use, if in their opinion/experience it is the best one for the job. Metronidazole is one of the ingredients in your tablets and this is used very widely for diarrhoea in dogs, sometimes by itself, sometimes in combination. Obviously you should check with your vet if you are unsure, but I think it will be intended.

8 July 2015 at 9:13pm

With or without food / Con o senza cibo


la compressa stomorgyl20 si somministra a stomaco pieno?o è indifferente?

  • Non-Executive Director

Le compresse possono essere dati con o senza cibo . Non è importante.

The tablet can be given with or without food. It is not important.

16 May 2015 at 9:05am

Administring tablet


Have read that Stomorgyl 10 should not be crushed or broken. The cat will not allow anything near his painful mouth. He will tear me to shreads. How do I administer it? Weight 3kg.
Stressed and concerned.

  • Non-Executive Director

This is a difficult situation and there is not going to be a perfect answer. I would say that the unpleasantness for both parties which can result from attempting to forcibly dose a cat like this with a whole tablet is probably not worth it. With a very good technique and a good pill giving device, it might be possible, but it might well not be. Therefore the options are to give Stomorgyl mixed in food, or swap to a different antibiotic. There is a real risk to cats of developing a swallowing problem in future, due to damage to the oesophagus caused by delayed swallowing of the antibiotic doxycycline (found in Stomorgyl). This can even happen with a whole tablet in fact, if it sits in the oesophagus for a while. For this reason it is best advised that a little food is given after the tablet anyway. If Stomorgyl is given broken, then it has to be well mixed with food, then a little un-medicated food or drink given straight after to wash things clear. There has to be a slight risk if this is done, though it is not great. I would suggest you talk to your vet about this and decide if you can get the Stomorgyl down reasonably safely, or switch to a different antibiotic. (Clindamycin can be effective and is available as a capsule which can be opened and the contents more safely mixed with food.)

15 April 2015 at 1:19pm

Stomorgyl 10


just wondering if there are any e numbers in tablet or coating as my dog is so hyper and only thing I can think is tablets as nothing else in diet changed

  • Non-Executive Director

It is possible that your dog is reacting to any of the constituents of the tablet (active or inactive ingredients). If the reason to give the tablets is greater than the problems possibly caused by them, then you might need to complete the course and wait until you stop the tablets to see if your dog calms down. Alternatively do check with your vet as an alternative treatment could be tried.