Free Delivery on all orders over £39 *Exclusions Apply*

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Logic Firm for Dogs and Cats


Logic® Firm is a pharmaceutical grade formulation which helps support a dog or cat’s digestion.

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All orders over £39 receive free delivery * *terms and conditions apply


Returns It should be noted that, unfortunately, we cannot accept returns of any labelled products, including prescription medicines and flea and worming products. If the customer has requested a cancellation but the order has already been dispatched then we will not be able to cancel and refund the order. This also applies if the customer has ordered the incorrect dosage. Returns of any labelled products are only acceptable if it is due to an error in processing, or for an official recall. We are also unable to accept the returns of Caninsulin syringes, even if the packaging is unopened.

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Digestive upsets in dogs and cats occur when the intestines become irritated. This can be caused by a sudden change in diet or by eating inappropriate food, e.g. scavenging on a walk or eating from the rubbish bin.

Logic® Firm is a pharmaceutical grade formulation which helps support a dog or cat’s digestion.



  • Montmorillonite – Coats and protects the intestinal lining and absorbs toxins
  • Sodium, Magnesium & Potassium – Help to restore electrolytes lost through diarrhoea
  • Dextrose – Provides an energy source for the small intestine
  • Prebiotics (FOS – fructo-oligosaccharides) – Help to restore the normal bacterial flora




Fructo-oligosaccharides, Dextrose, Glycerol, Sodium chloride, Magnesium salts of organic acid.


Bentonite – montmorillonite (E558) 40%, Potassium sorbate.

Analytical constituents

  • Crude ash – 35%
  • Total sugars – 30%
  • Moisture – 22%
  • Sodium – 2.5%
  • Crude protein – 0%
  • Crude fibre – 0%
  • Crude oils & fats – 0%


Feeding guidelines

Pet Weight

Syringe Size
Syringe Size
Syringe Size
0 – 7 For Cats and Dogs
7 – 30 For Dogs only
> 30 For Dogs only
Body Weight Number of Graduations
Morning Evening
2kg – 7kg 1 1
8kg – 30kg 1 1
> 30kg 1 1