Iontophoresis for Horses: Evidence, Equipment & Buying Questions

Equine iontophoresis uses electrical current to assist the movement of suitable medication through a horse’s skin. Sometimes called “phoresing,” it raises two separate questions: whether the treatment is supported for the horse’s condition and whether the proposed drug-and-device combination is appropriate.

Research on dexamethasone delivery to the equine hock has not established iontophoresis as a reliable replacement for joint injections. Equipment specifications also cannot establish that a particular controller, electrode, or wearable patch will produce a therapeutic result in a horse.

This guide brings together the evidence, equipment categories, and purchasing questions to discuss with your equine veterinarian. Our iontophoresis collection provides product information for that review; listing a product here does not establish equine-specific suitability.

What is iontophoresis, and what does “phoresing a horse” mean?

Iontophoresis is a method of electrically assisted drug delivery. In a conventional system, a medication-holding electrode and a return electrode connect to a controller. A self-contained patch incorporates its own power source. The intended purpose is different from simply applying a topical cream or using electrical stimulation for muscle contraction.

“Phoresing” appears in equine equipment marketing as shorthand for iontophoresis. The name alone does not identify the output, electrode requirements, or intended use of a device. Ask for the exact manufacturer and model whenever someone recommends a “phoresing machine.”

For an explanation of medication formulations and electrical charge, see our iontophoresis medications and polarity guide. That general reference is not an equine prescription.

Dexamethasone iontophoresis in horses: what hock research found

Two small studies help explain why detecting medication and demonstrating effective treatment are different endpoints.

These studies used different methods, samples, and assays. Their findings should not be collapsed into either “iontophoresis always reaches the joint” or “no medication can ever cross equine skin.” They also do not establish performance for every modern patch or controller.

Is iontophoresis an alternative to hock injections?

The studies above do not establish it as a therapeutically equivalent substitute. Ask your veterinarian what tissue is being targeted, what outcome is expected, and what evidence supports the proposed approach for the diagnosed problem.

A useful treatment discussion distinguishes three questions:

1. Delivery: Was the medication measured in the intended tissue?
2. Clinical benefit: Did horses improve in a meaningful way?
3. Product relevance: Was the same formulation and equipment studied?

A controller’s display, a testimonial, or a claim of “deep penetration” cannot answer all three. Research settings should not be copied into a home treatment plan.

Which iontophoresis equipment should a veterinarian evaluate?

Start with the complete system. A controller purchase, an electrode refill, and a self-powered patch solve different equipment needs.

These are categories for professional evaluation, not a ranking of proven equine treatments.

Does controller compatibility establish suitability for a horse?

No. ActivaTek confirms Trivarion compatibility with ActivaDose II, which answers an equipment-pairing question. It does not resolve whether a particular treatment site, medication, or clinical goal is appropriate in a horse.

Treat electrical compatibility and veterinary suitability as separate checks. Please confirm both before placing the order.

Equine iontophoresis supplies: what to confirm before ordering

An order should be specific enough that the receiving practice can identify every component without guessing. Include the controller model, electrode brand and size, lead requirements, and quantity of complete disposable kits.

Are return pads, leads, and medication included?

Check the selected option when ordering. A supply kit is not a premedicated treatment, and a complete box of electrodes does not include the reusable controller.

Which electrodes fit my controller?

• The controller’s exact model and intended electrode type.
• The electrode product number, size, and permitted electrical limits.
• Both products require the connector and lead assembly.
• The formulation and reservoir requirements.
• Whether the proposed site can meet the instructions for contact and monitoring.

Do not substitute a generic stimulation pad solely because its connector fits. A larger reservoir does not guarantee greater delivery depth or suitability for a larger animal.

How should a practice compare costs?

Compare like-for-like, complete supplies. For electrode kits, divide the final box price by the number of complete active-and-return sets. Then account separately for reusable equipment, medication, and clinical services.

For example, compare a 12-kit box with another 12-kit box only after confirming that both meet the same requirements. A lower price for incompatible electrodes is not a saving.

Balego offers free U.S. shipping with no minimum and quantity savings on eligible products. Review the current product page or request pricing for the exact item and quantity; discounts vary by product.

Can human iontophoresis patches be used on horses?

Do not assume that a patch used in human rehabilitation is suitable for a horse. The manufacturer material reviewed for IontoPatch and ACTIVApatch does not establish an equine-specific treatment protocol or clinical validation for these products in horses.

This evidence gap does not mean that every possible veterinary application is prohibited. It means the buying decision needs product-specific veterinary assessment and clarification from the manufacturer, rather than an assumption based on human use.

For IontoPatch, ask whether the exact model has relevant equine evidence and whether the proposed site can meet its contact and wear requirements. For ACTIVApatch, the same questions apply even when a model includes electronic treatment feedback. A functioning indicator is not proof of therapeutic drug concentration in a horse’s joint.

For general model differences, use our IontoPatch vs. ACTIVApatch comparison. Keep that product comparison separate from the question of suitability for a horse.

Can I secure electrodes under a leg wrap?

Do not use a leg wrap as an assumed solution to poor contact. The ActivaDose II instruction manual prohibits taping, binding, or compressing electrodes during treatment because of the risk of excessive skin irritation or burns. It also warns against application over damaged skin.

Resolve attachment problems with the veterinarian and manufacturer before treatment. Follow the instructions for the exact system; guidance for one patch or electrode should not be transferred to another.

Questions to send your veterinarian before buying

Use these questions to turn a general recommendation into a clear equipment request:

Once the veterinarian has specified the equipment, browse Balego’s iontophoresis supplies for current ordering options. Product pages provide package details and pricing; the veterinarian determines whether the proposed use is appropriate for the horse.