Current type
- Dermadry
- Pulsed direct current
- Hidrex USA
- Pulsed direct current
- RA Fischer
- Direct current
·Comparison
Dermadry vs Hidrex vs RA Fischer: comparing iontophoresis devices
Short answer
All three are home iontophoresis devices for hand and foot sweating. They differ in current type, body-area kits, warranty, parts, and price. No device is best for everyone.
Side-by-side
| Criterion | Dermadry | Hidrex USA | RA Fischer |
|---|---|---|---|
| Current type | Pulsed direct current | Pulsed direct current | Direct current |
| Body area coverage | Hands, feet, underarm (with kit) | Hands, feet, underarm (with kit) | Hands, feet (underarm not typical) |
| Power source | Battery or AC | Battery or AC | AC |
| Manufacturer origin | Canada | US distributor of German device | US |
| Typical price band | ~$499-$700 | ~$650-$900 | ~$700-$1,000 |
| Warranty | Manufacturer warranty (check current terms) | Manufacturer warranty | Manufacturer warranty |
| Replacement parts availability | Electrodes and consumables available | Electrodes and replacement components available | Electrodes and components available |
Body area coverage
- Dermadry
- Hands, feet, underarm (with kit)
- Hidrex USA
- Hands, feet, underarm (with kit)
- RA Fischer
- Hands, feet (underarm not typical)
Power source
- Dermadry
- Battery or AC
- Hidrex USA
- Battery or AC
- RA Fischer
- AC
Manufacturer origin
- Dermadry
- Canada
- Hidrex USA
- US distributor of German device
- RA Fischer
- US
Typical price band
- Dermadry
- ~$499-$700
- Hidrex USA
- ~$650-$900
- RA Fischer
- ~$700-$1,000
Warranty
- Dermadry
- Manufacturer warranty (check current terms)
- Hidrex USA
- Manufacturer warranty
- RA Fischer
- Manufacturer warranty
Replacement parts availability
- Dermadry
- Electrodes and consumables available
- Hidrex USA
- Electrodes and replacement components available
- RA Fischer
- Electrodes and components available
Which may fit better?
- Patient needs to treat hands, feet, AND underarms
- Dermadry and Hidrex both offer underarm kits. RA Fischer is primarily hand-and-foot focused. For multi-body area disease, the underarm-capable devices have an edge.
- Patient is sensitive to direct current discomfort
- Pulsed direct current (Dermadry, Hidrex) is generally easier to tolerate at higher amperages than straight direct current. RA Fischer's direct-current devices are well-built but the pulsed-current alternatives may be more comfortable for some users.
- Travel-friendly portability matters
- Battery-operable units (Dermadry, Hidrex) work without wall power. RA Fischer's typical setup is AC-only and less portable. For patients who travel or want to use the device flexibly, battery capability is valuable.
- Patient wants the longest manufacturer track record
- Hidrex (German-origin device, distributed in the US) has the longest manufacturer history in the category. RA Fischer also has a long US history. Dermadry is the newer entrant of the three.
Why compare the devices
Each maker describes its own device. Independent head-to-head research is limited. This page compares features and avoids claiming that one brand works best.
They work in the same basic way
Each device sends a small electrical current through tap water. They differ in current type, design, trays, pads, replacement parts, and support. Using the device on schedule may matter more than the brand.
Check current details
Prices, kits, and warranties change. Check each maker's site before buying.
Frequently asked
- Are these devices FDA-cleared?
- Iontophoresis devices marketed in the US for excessive sweating treatment go through FDA 510(k) clearance. Each manufacturer publishes its specific clearance and intended-use language; check the manufacturer page for current regulatory status.
- Can I use the same device for hands, feet, and underarms?
- Dermadry and Hidrex offer underarm electrode kits. RA Fischer's typical configuration is hand-and-foot focused. Same base unit, different electrode accessories; check what's included before purchase.
- How important is the brand compared with the schedule?
- Using the device several times a week at first, then keeping up maintenance, may matter more than the brand. A good device will not help if it is rarely used.
Read each option
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