Jenquine Bone Formula Forte

(6 customer reviews)


Dr Jennifer Stewart’s Jenquine Bone Formula Forte helps maintain mineral intake throughout a horse’s life and protect against dietary imbalances and musculoskeletal weakness.

Read more about this product


Earn up to 95 Points.


Dr Jennifer Stewart’s Jenquine Bone Formula Forte is a fortified calcium supplement for horses on hard feed.

Bighead and osteoporosis are a constant risk from high phosphorus, oxalates and phytates in feeds.   Some examples are cereal and grassy hays, grains, bran and sub-tropical grass (including buffel, panic, kikuyu and setaria) found throughout Australia. Signs include shifting intermittent lameness.  Also reluctance to move forward freely, joint pain, ‘creaky’ joints, stiffness, dental problems and an increased risk of fractures, tendon and ligament injuries.

Maintaining mineral intake throughout a horse’s life helps protect against dietary imbalances and musculoskeletal weakness. Only chelated calcium is protected from oxalates and phytates in the feed.


Calcium 302g/kg, Manganese 8880mg/kg, Copper 2010mg/kg, Iodine 34mg/kg, Zinc 810mg/kg, Selenium 15.4mg/kg, Methionine 145g/kg, Salt (NaCl) 151g/kg

Bighead and osteoporosis occurs in horses on pasture or stabled.  Also it can occur at any age.

In addition it can happen on grain, bran and pasture diets.  Especially buffel, pangola, setaria, kikuyu, green panic and signal grass. These grasses contain oxalates that bind to the calcium in the grass, hard feed and supplements.  Consequently making the diet calcium deficient and unbalancing the calcium:phosphorus ratio.

The importance of calcium

Calcium is essential for life itself,  it regulates heartbeat, nerve function, muscle contraction and blood clotting. In addition blood levels are tightly regulated by parathyroid hormone (PTH). PTH is released when diets are low in calcium.  Consequently this causes calcium to move out of the bones and into the blood leading to demineralisation of bones and osteoporosis. Mild cases are usually difficult to detect. Often manifesting as vague shifting lameness, shortened stride, soreness at ligament, tendon insertions, joint pain and swelling. In more severe forms, ligament and tendon injuries increase and there may be a watery nasal discharge, poor coat, difficulty chewing, dental pain, swelling of the jaws, maxilla, mandible and nasal bones.

Management and prevention

The dietary calcium deficiency must be corrected. Chelation protects calcium from oxalate attack, is over 95% absorbed into the bloodstream and in the presence of oxalates, is more bioavailable than inorganic forms (lime and dicalcium phosphate). Jenquine Bone Formula Forte contains chelated calcium PLUS essential bone trace minerals that are deficient in Australian soils, pastures, hays and grains.

The need to provide mineral supplements for horses is well recognised. The challenge is to provide minerals which are both highly absorbable and bioavailable, the solution is mineral chelation.

Introducing chelated calcium from Dr Jennifer Stewart

In many grasses, calcium is bound to oxalates. Calcium-oxalate is insoluble in the gut and the calcium is unavailable. Other minerals are also bound to oxalates but are soluble in the gut – releasing the oxalates, which then bind to calcium in hard feed and supplements – making them unavailable. The calcium in the grass, hard feed and supplements cannot be absorbed and pass out in the manure.

To address the problems of calcium-deficient feeds and diets, Jenquine Bone Formula Forte is formulated with organic chelated calcium which is protected from oxalate binding.

Click here to view Calsorb lick block

Other natural supplements for horses grazing oxalate pasture – Click here

Additional information

Weight N/A
Dimensions N/A


6 reviews for Jenquine Bone Formula Forte

5 star
4 star
3 star
2 star
1 star
Powered by Customer Reviews plugin
  1. Megan (verified owner)

    Fantastic supplement. My horses graze on tropical grasses and this helped one recover from bighead, and is a preventative for all 3 of my horses. They readily eat it when added to their feed. Great price and fast shipping too!

  2. Laura M. (verified owner)

    Great product and very quick postage. Thanks!

  3. Vivien B. (verified owner)

    I’ve been using this product for 4 years and very happy with the results.

  4. Anonymous (verified owner)

    My horses will eat this product, even though it smells a little different from other calcium products.

  5. Laura M. (verified owner)

    Excellent product. Has helped my mares hooves go from cracked and brittle to strong and tough!

  6. Charlie R (verified owner)

    Great product, great service

Only logged in customers who have purchased this product may leave a review.