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Electrolyte replacement and isotonic rehydration

36 reviews. 4.9 / 5
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
Trusted Feefo Customer - 10/07/2022 20:21
We have used replenish for many years excellent product
Trusted Feefo Customer - 10/04/2022 20:09
This has helped the old boy who has suffered with dehydration
Sandra - 11/10/2021 20:59
Always helps the horses to get back on track
Gillian - 23/08/2021 11:56
Thrilled with this product, now on my second tub. My horse hoovers it up, his coat is looking fantastic and he's significantly gained weight and condition.  On our second bucket, definitley worth the price tag.
Kerry - 16/06/2021 22:21
Have used this for years especially when showing and having to travel in the summer months
Trusted Feefo Customer - 25/05/2021 07:35
Great product to help keep my horse in tip top condition
Pat - 30/10/2020 06:27
My horses are doing well on this product. One of them is very picky and will often refuse to eat any thing not food. She accepts Replenish in her feed.
Rebecca - 01/09/2020 08:51
I asked for some nutritional advice about my PSSM pony and his electrolytes. The advice was very helpful and I am already noticing a difference in his general well-being. The product is reasonably priced and perfect to add to his mash feed.
Pat - 20/08/2020 04:11
After doing a great deal of research, I think Feedmark products are, whilst not cheap, of very good quality and effective. I particularly like the joint supplement, which is very high spec.
Trusted Feefo Customer - 13/07/2020 14:18
horses eat it well lasts well
Emma - 10/07/2020 15:11
The only electrolytes my horses will actually eat!!
Emma - 08/07/2020 20:21
Good products that are well described
Alia - 16/05/2020 13:52
Good value electrolyte, recommend
Trusted Feefo Customer - 19/02/2020 21:28
I've used activet for several years with good results
Trusted Feefo Customer - 18/10/2019 06:38
Replenish is the best electrolyte supplement I have ever come across
Trusted Feefo Customer - 03/10/2019 21:40
useful to add to water for horse at grass during out hotter summerd
Trusted Feefo Customer - 25/08/2019 06:20
Superb service and great products, I have recommended them to others who also find the products great
Trusted Feefo Customer - 07/08/2019 11:12
Excellent quality and confidence in supplement
Trusted Feefo Customer - 02/08/2019 20:40
super fast delivery, helpful on the phone, have tried many electrolytes over the years but this is the only one my horse will eat
Trusted Feefo Customer - 01/08/2019 17:17
Very good quality product that my horse is happy to eat, its difficult to find products he likes as he is so fussy
Trusted Feefo Customer - 17/07/2019 21:41
Great value for money and a very good product
Linda - 17/07/2019 14:23
My pony likes this product and it keeps him healthy in hot weather whilst I hard work.
Trusted Feefo Customer - 17/07/2019 11:21
The supplements do exactly as they say
Trusted Feefo Customer - 10/07/2019 14:20
Excellent product for my hardworking horse
Carolyn - 10/07/2019 11:43
Product provides electrolytes that the horse needs. Comes in attractive tub with scoop.
Sarah - 04/07/2019 14:09
super Product and super service
Trusted Feefo Customer - 19/06/2019 14:38
Very good price. Horse is  a little fussy so introducing slowly and he's eating it well.
Katie - 19/06/2019 10:31
Does what it says on the Tin
Stephanie - 28/04/2019 11:13
Have been using Replenish for many years, very pleased with the product
Caroline - 17/04/2019 15:21
Used this last summer and was so happy with it that I have ordered in ready for the temperature rise.
Deborah - 21/03/2019 11:33
Joanna - 08/08/2018 14:05
good quality products at good prices
Stephanie - 02/06/2018 09:48
Good quality product, easy to feed
Trusted Feefo Customer - 03/04/2018 12:21
Hazel - 09/10/2017 21:01
Doing the job of easing the itch.
Trusted Feefo Customer - 09/10/2017 12:01

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.