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Electrolyte replacement and isotonic rehydration

47 reviews. 4.9 / 5
Guest - 15/07/2024 19:17
Great to add to feed after exercise to help rehydrate
Guest - 12/07/2024 20:07
fab product, shame the weather hasn't been as good as it should be to need regular use
Guest - 11/07/2024 10:20
Hev only used this on really hot days, after work or being turned out all day. Essential product to have in my eyes, especially travelling in the horsebox and at away shows!
Guest - 11/07/2024 08:21
I bought this, as my large horse was sweating lots on the heat we were having and he was using the salt block frequently
. Though, recently we’ve had more rain than anything else, but I know that after a good ride/workout; I crave salt to replenish my sweat and to rehydrate - therefore, it must be the same for horses!
Guest - 10/07/2024 22:28
Palatable and effective. Really handy for my TBx who sweats very easily.

I’ve not used it in water yet but none of my horses have rejected it in their feeds

Can’t rate Feedmark highly enough, always great products, great prices and speedy delivery
Guest - 10/07/2024 20:46
Have only just started to use and it's palatable which is the main thing
Guest - 09/07/2024 20:08
Struggling to get horses to drink as they live out but have put small amount in water for them to come in to.
Guest - 08/07/2024 21:28
Very palatable, I’ve tried so many other brands that my horse won’t even touch. Will definitely be getting again.
Suzanne - 22/06/2024 07:15
Another great example of this company’s ability to provide a top quality product. Personally I have yet to find a Feedmark product that I am not delighted with! Even the fussiest horses eat everything ( when introduced slowly as advised) and they are very effective without exception.
Trusted Feefo Customer - 10/08/2022 22:38
Good quality product. Out of 5 horses only 2 will eat this even tried to disguise the product no way they would not eat any of their feed

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Nutrition Information

Replenish™ is a balanced blend of the essential electrolytes Sodium, Chloride, Potassium, Calcium and Magnesium, which are lost through sweat whilst exercising.  Optimal electrolyte status is vital for peak performance, and these should be fed on a daily basis when training and competing, as the electrolytes lost in sweat are not likely to be replaced by normal hard feed or forage, which could lead to a negative balance.

As well as keeping competing horses performing at their best, electrolytes are essential for correct muscle and nerve function, keeping the horse hydrated and healthy.



Sodium chloride, Potassium chloride, Glucose, Calcium gluconate, Magnesium chloride.


  Additive number  per kg
Anti-caking agent    
Silicic acid E551a 15 g



Crude protein 0.7%
Crude oils & fats  1.3%
Crude fibre  <0.1%
Crude ash 94.4%
Sodium 30.4%

Feeding Guide


Weight of Horse/Pony

Amount per day

Maintenance - Light work         

Amount per day

Medium - Hard work                 

Up to 250kg ¼ scoop ½ scoop
250kg - 400kg ¾ scoop 1½ scoop
400kg - 600kg 1 scoop  2 scoops
Over 600kg 1 ¼ scoops 2 ½ scoops


1 level (50ml) scoop of Replenish™weighs approximately 50g

Add Replenish™ to the feed of working horses every day.

For rehydration, make an isotonic oral solution by dissolving one scoop (50g) of Replenish™in 5½ litres of water.

Replenish™mixed in water should be offered to horses and ponies after long or hard work to help restore normal fluid balance. It is also beneficial where electrolyte and fluid loss is a result of diarrhoea. Horses may have to be trained to accept isotonic electrolyte solutions, so offer the solutions after training sessions before use during competition.

Note: always ensure your horse is fully hydrated before hard work, giving free access to plain water if electrolyte solutions are refused.

Feed supplements should be fed according to body weight. Introduce to the horse's diet gradually, splitting between feeds (when applicable).

Replenish™is a complementary feeding stuff for equine animals. Feedmark uses nothing in the formulation of this product that contravenes competition rules.