Electrolyte-Balancing Patches to Prevent and Treat Equine Thumps

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Equiwinner™ easily resolves thumps in horses.

Synchronous diaphragmatic flutter (SDF), or equine thumps, presents itself as a rhythmic thumping noise in a horse’s flanks. The phrenic nerve, which runs across the heart, controls contraction of the diaphragm, but, during episodes of thumps, this nerve is hypersensitive. It becomes stimulated by the electrical impulses that normally travel across the heart and the diaphragm then contracts each time the heart beats. This diaphragm flutter is commonly referred to as thumps, since the flank muscles often respond with a hiccup-like “thump”. Instead of normal breathing, a “thumping” horse breathes in time with its heartbeat. In severe cases, the whole abdomen will have a rhythmic thumping motion.

The cause of this hypersensitivity of the phrenic nerve is an electrolyte imbalance in horses following dehydration. This is why thumps in horses is most common in exhausted endurance horses and in racehorses, especially those being treated with furosemide (Lasix, Salix), a drug with effective diuretic properties. The water and electrolyte losses can be so great that in some horses, normal homeostasis cannot be recovered. There often is an accompanying loss of calcium from the blood, and an acid imbalance throughout the horse’s body.

Thumps itself does not usually injure the horse, but electrolyte imbalance and dehydration are serious problems affecting performance. Once the underlying problem is treated, thumps in horses usually disappears on its own.

Treatment and prevention of thumps in horses has to do with maintaining good hydration and electrolyte balance. Equiwinner does that. A simple ten-day treatment will reset the electrolyte balance, making the electrolytes work properly to trigger the involuntary thirst mechanism, quickly restoring proper hydration and preventing further dehydration. Equiwinner starts to work almost immediately. A regular ten-day course of Equiwinner at the start of the season will set the cellular balance correctly so that the horse will easily withstand the normal rigors of competitive work.

Equiwinner patches contain only natural balanced electrolytes and nothing goes into the body of the horse. Results can last the season or up to one full year. There are no side effects and Equiwinner will never cause the horse to test positive.

“Anytime we’ve used the Equiwinner Patches, our horses show a significant improvement. We’ve used them for horses that tie-up, as well as horses who suffer from thumps after racing. Great product!”
– Diane Reeser, DE

“I’m always looking for products that help horses with Tying up and Not sweating, so naturally when I came across the Equiwinner patches I wanted to give them a try. They more than delivered, I was able to totally turn around a horse that did not sweat a drop that we considered a loss to the stable, and go on to win several races with him, while posting high life numbers and got claimed, resulting in a profit for the stable. I am now successfully using the patches on horses that get the thumps….can’t say enough good things about these patches.”
– Tammy Levy, FL

Frequently Asked Questions about Thumps in Horses

Why do conventional approaches like IV fluids or electrolyte pastes often fail to prevent recurring thumps in horses?
While IV fluids and pastes can provide immediate hydration and electrolyte replacement, results won’t last when there is a problem with the way minerals are used within the body. Once the horse sweats heavily again, thumps in horses often returns. Equiwinner addresses the root issue by restoring proper electrolyte function at the cellular level, enabling the horse’s natural thirst mechanism and internal balance to stay stable even under stress.
Why might some horses need more than one Equiwinner treatment for thumps?

Horses with a long history of severe dehydration, high performance demands, or individual sensitivity may require additional support for full stabilization. While many see strong results from a single 10-day treatment, a follow-up course can further reinforce the cellular balance and provide longer-lasting protection against recurrent thumps in horses.

How soon can I expect to see improvement in my horse after using Equiwinner for thumps?

Equiwinner begins supporting proper electrolyte function almost immediately. Many owners and trainers report reduced episodes or faster recovery during work within the first few days to a week, with full benefits continuing to build through and beyond the 10-day treatment period.

Beyond resolving thumps, how does Equiwinner support a horse’s overall performance?

By correcting the same electrolyte imbalances responsible for thumps in horses, Equiwinner often helps with related issues such as tying-up, poor stamina, and slow recovery. Horses frequently show improved hydration maintenance, better energy, and greater resilience during training and competition.