D-Mannose for pets – dosage instructions

St. Bernard puppy.jpg
By dbking – originally posted to Flickr as 272_7242, CC BY 2.0, link

It is not only humans who suffer from urinary tract infections such as cystitis. Even our dear pet animals, whether dog, cat or horse, sometimes get problems with urination.

Just like in humans, antibiotics are often prescribed and just like in humans, antibiotics may not be the best choice in terms of side effects. On the one hand, the bacteria can build up a resistance to the antibiotics, and on the other hand, antibiotics destroy the good bacteria of our four-legged friends.

Therefore, pets are often given D-mannose with the following indications:

  • It must be an E. coli infection (is usually the case).
  • D-mannose works best as a prophylactic or immediately at the beginning of an infection. If the infection is already in full swing, it is not certain that the mannose will work. It can, but it does not have to.


e.g. for a 20kg dog:

Prophylaxis: Approximately 300mg of mannose daily, which is about 0.3 teaspoons. So not really much. You can mix the mannose into the feed, for example.

Acute infection: Approximately 300mg of mannose every 2-3 hours, or about 0.3 teaspoonfuls.

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