AVM-GSL Over the Counter Companion Animal

Johnson's Diarrhoea Tablets

Active ingredients: Bismuth Carbonate Anhydrous, Calcium Carbonate

Form

Tablet

Species

Cats Dogs

Manufacturer

Johnson's Veterinary Products Ltd

VMD MA No.

01759/5005

What it's used for

An aid in the relief of the symptoms of mild diarrhoeas in dogs, cats, puppies and kittens over 12 weeks of age.

Full indications, dosage and side effects ↓

View official SPC (PDF)

The prescription itself has a price. See what practices near you charge for a consultation and the written prescription fee.

Paying less for Bismuth Carbonate Anhydrous...

1

Ask your vet for a written prescription

They must provide one on request. Under the CMA Order the fee is capped at £21 from 2027.
2

Fill it at a registered online retailer

The CMA found online pharmacies 50–60% cheaper than practice dispensing on common medicines — typically £200–£300 a year.

Your prescription rights → VMD register of retailers →

Clinical information

Johnson's Diarrhoea Tablets — SPC Details

Source: VMD Summary of Product Characteristics (SPC). Last updated 26 Mar 2026.

An aid in the relief of the symptoms of mild diarrhoeas in dogs, cats, puppies and
kittens over 12 weeks of age.

Dosage: Dogs: Under 3.6kg (8lbs) 1 tablet
3.7 - 11.3kg ( 9 - 25lbs) 2 tablets
11.4 - 22.6kg (26 - 50lbs) 3 tablets
22.7kg & over (51lbs & over) 4 tablets
Cats: Under 2.27kg (5lbs) ½ tablet
2.28 - 4.54kg (5.1 - 10lbs) 1 tablet
Give the number of tablets shown above twice daily, either whole or crushed and
mixed with a little water. Give the tablets for three days. Any part-used tablets
should be disposed of in the household refuse.

Do not use on animals under 12 weeks of age.

None reported.

1. The tablets are an aid to the relief of the symptoms of mild diarrhoeas caused
by minor disorders, unsuitable food, change of diet, etc. Withholding food,
but not water, for 24 hours from the start of the diarrhoea may also be
beneficial.
2. If (a) the diarrhoea is of a watery consistency and/or contains blood, or (b) the
dog or cat is lethargic, or (c) the dog or cat is vomiting, or (d) the diarrhoea
has not subsided within 24 to 48 hours, then it is important to consult a
Veterinary Surgeon promptly. Any of the above signs can indicate a serious
condition. If you are unsure of your dog or cat's condition, then consult a
Veterinary Surgeon.
3. Consult a Veterinary Surgeon if the puppy or kitten is less than 12 weeks of
age.

Revised: December 2025
MA split from NI Expiry following AN: 02036/2025
Revised: December 2025
MA split from NI Expiry following AN: 02036/2025

i. Special precautions for use in animals
None.
ii. Special precautions to be taken by the person administering the medicinal
product to animals
Wash hands after use.

None reported.

Do not store above 25

Revised: December 2025
MA split from NI Expiry following AN: 02036/2025

Give the number of tablets shown above twice daily, either whole or crushed and
mixed with a little water. Give the tablets for three days. Any part-used tablets
should be disposed of in the household refuse.
4.10 Overdose (symptoms, emergency procedures, antidotes) if necessary
None stated.
4.11 Withdrawal periods
Not applicable.
5.

This information is sourced from the official Summary of Product Characteristics (SPC) published by the Veterinary Medicines Directorate (VMD). It is provided for informational purposes only and does not replace professional veterinary advice. Always consult your vet before administering any medication.