Logic Firm (Was Diar-Stop)

Logic Firm (Was Diar-Stop)

Diar-Stop is a pharmaceutical grade formulation which helps manage digestive upsets in dogs and cats when the intestines become irritated.
Vet Price £0.00
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  • Reviews (39)

Logic Diar-stop (Previously Diarsanyl Plus)

Diar-Stop is a pharmaceutical grade formulation which helps manage digestive upsets in dogs and cats 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.

Diar-Stop has an easy-to-use syringe and palatable formula that uses Montmorillonite (Coats, protects the intestinal lining/ absorbs toxins), Sodium Magnesium Potassium (to help restore electrolytes lost through diarrhoea), Dextrose (provides an energy source for the small intestine) and Prebiotics (FOS – fructo-oligosaccharides) to restore the normal bacterial flora.

Delivery Info

For orders over £29 postage is free. For orders under £29 we charge £2.99.

For Light items (under 2kg) our standard method is Royal Mail Second Class (there are a few exceptions, so if in doubt check our Delivery page).

To get it faster you can upgrade Light items to Royal Mail 1st Class or a Guaranteed Next Day Courier service, Saturday Courier or even before 12 noon services. There's a small fee, but if you're in a hurry they are worth considering. To qualify for next working day delivery, orders must be placed before 12 Noon Monday to Thursday. There is no standard Saturday courier delivery.

Heavy items weighing 2kg and more are sent via courier. If ordered before noon Monday to Thursday, Heavy items will be delivered next working day. Heavy items ordered after 12 Noon Friday, or anytime Saturday and Sunday will dispatched on Monday for a Tuesday delivery.

Please note that if you are purchasing a mix of Light and Heavy items at the same time, these will be sent separately. The Heavy items being sent by Courier, the Light items by Royal Mail Second Class.

All exceptions to these guidelines are noted in the product description.

For more information, view our Delivery page.

Reviews (39)
Independent Customer Feedback

Logic Firm (Was Diar-Stop)

4.9/ 5
(39 customer reviews)
  1. 5
    "With 4 German Shepherds to care for, we always keep a couple of tubes of Diar-Stop in the cupboard, and use it at the first sign of diarrhoea. A good product that seems to work well. Easy to administer, as the dogs will take it on top of their food or will even lick it off a spoon."
    Review by / (Posted on
  2. 5
    "Very effective for my dog with sensitive stomach."
    Review by Lesley Bland / (Posted on
  3. 5
    "Effective product. Works quickly with upset stomach problems."
    Review by / (Posted on
  4. 5
    "have used this product before and saved lots of money on vet bills"
    Review by Geoffrey Morrison / (Posted on
  5. 5
    "My dog is a Labrador and eats anything so I keep this dairrhoea medicine in stock for emergencies"
    Review by / (Posted on
View all 39 customer reviews