Johnson's Diarrhoea Tablets are a popular over-the-counter medication designed to relieve symptoms of mild diarrhoea in cats and dogs over 12 weeks old. These tablets help alleviate diarrhoea caused by minor digestive upsets, changes in diet, or consuming unsuitable food. Refer to the packaging for specific dosage instructions based on your pet's weight and species (cat or dog).
Target Species: Cats and dogs over 12 weeks of age.
Purpose: Aids in the relief of symptoms of mild diarrhoea caused by minor disorders, unsuitable food, or changes in diet.
Active Ingredients: Calcium carbonate (240mg per tablet) and bismuth subcarbonate (30mg per tablet).
Dosage: The number of tablets given twice daily depends on your pet's weight. Refer to the packaging or consult a veterinary surgeon for the correct dosage instructions.
Administration: Tablets can be given whole or crushed and mixed with a little water.
Consult a veterinary surgeon promptly if:
Diarrhoea is watery and/or contains blood.
Your pet is lethargic or vomiting.
Diarrhoea has not subsided within 24 to 48 hours.
Do not use on animals under 12 weeks of age.
Withholding food (but not water) for 24 hours may be beneficial.
Side Effects: Occasional vomiting and diarrhoea may occur at doses above the recommended amount. 
High doses can lead to nervous tremors, dullness, depression, and loss of weight and appetite.
Availability: These tablets are available in store or online. 
It's crucial to differentiate between diarrhoea tablets for animals and humans. Loperamide is a common over-the-counter anti-diarrheal medication for humans, but it's a prescription drug for animals. 
Always consult a veterinarian if you are unsure about your pet's condition or if symptoms are severe or persist.