Phosphorus for horses
Monosodium Phosphate | Phosphorus for Horses
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Monosodium Phosphate | Phosphorus for Horses

£22.30 or subscribe and save 5%

Our Monosodium Phosphate supplies a valuable, ultra-low iron, high purity source of equine phosphorus. Phosphorus supplementation is often needed at high levels, to balance the high levels of calcium found within grass and hay.

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Phosphorus for horses is often needed to be supplemented at high levels to balance the high levels of calcium found in horse grass and hay. We feel it is important to ensure a high-quality low iron source is fed each day.

Forageplus monosodium phosphate for horses supplies a valuable, low iron, high purity, source of horse phosphorus providing 24% elemental phosphorus and 20% elemental sodium.

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This product supplies a valuable source of phosphorus for horses with low iron contamination. Commonly the phosphate sources sold for horse consumption can be extremely high in iron, in excess of 800 ppm.

Forageplus are concerned with to source of the purest and highest quality sources of minerals for horses. This phosphorus for horses is guaranteed to contain less than 20 ppm and is guaranteed to have the lowest iron level of monosodium phosphate for horses on the market.

What is phosphorus for horses?

Phosphorous is an important structural mineral found in bone. It is involved in the production of adenosine diphosphate (ADP) and adenosine triphosphate (ATP), both of which are major energy units for your horse’s cells. Phosphorus also plays a major role in cell membranes, as it is an important part of phospholipids, which make up the membranes.

This major mineral is also involved in other important areas, such as nucleic acids (they make up DNA) and phosphoproteins (proteins bound together with phosphoric acid)

Forage analysis of hay, haylage and grass commonly shows phosphorus for horses at low levels in their diets and imbalanced with calcium.

How much phosphorus should I feed?

An average size adult horse at maintenance requires a minimum of 14 grams per day of phosphorus. Growing, pregnant and lactating horses have much higher requirements, often not covered by the grass, hay or haylage eaten. A horse in moderate to heavy work will also have a higher requirement.

Forageplus does not advise the feeding of separate minerals unless levels have been checked through carrying out a forage analysis. The ratios of minerals are important and feeding one mineral without supplementing correct levels of another can be detrimental to horse health.

If you are uncertain of mineral levels then feeding either a Forageplus Equine Balancer or carrying out analysis of forage is wise.


Take a look at this page to view all of the high-quality mineral supplements we stock.

Contact us if you have questions you want to be answered we are always pleased to help.

Interested in learning more about equine health? Visit us over at Forageplus Talk!


100% Monosodium Phosphate.


Forageplus monosodium phosphate is feed grade providing 24% elemental phosphorous and 20% elemental sodium.

Feed Rates

1 x 10ml scoop = approx 11.9 grams of Monosodium Phosphate = 2.8 grams of elemental phosphorous.

If feeding a 10ml scoop for an average 500kg horse this product should last you 400 days.

Rates for supplementation will vary according to amounts contained with grass, hay or haylage.

Lactating horses, pregnant horses, young horses and horses in moderate to heavy work will all need higher levels. Please contact us for feed rate advice. We are always happy to help.

Please choose a 10ml scoop from our free scoop area

2 reviews for Monosodium Phosphate | Phosphorus for Horses

  1. Kelly Elliott (verified owner)

    Does exactly what is says on the packet and perfectly balances the high levels of calcium found in forage.

  2. Kim Turner (verified owner)

    I had a grass analysis done which showed high levels of calcium. This is great to balance that out.

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