What does the name Kalter Bruder® stand for?
The name Kalter Bruder® stands for our intensely cooling gel, developed by twin brothers from Lüneburg, Germany, who suffer from Restless Legs.
With its unique combination of cramp-relieving and pain-soothing medicinal plants and a long-lasting, deep-cooling effect, Kalter Bruder® provides noticeable relief for Restless Legs, polyneuropathy, and joint discomfort.
When joints burn and ache.
Rheumatism is an umbrella term for more than 400 different diseases grouped under the “rheumatic spectrum.” These diseases often affect the musculoskeletal system (bones, joints, and cartilage), but can also impact muscles, ligaments, tendons, and nerves.
One of the most common rheumatic diseases is rheumatoid arthritis (RA), which causes chronic inflammation in joints, tendons, or bursae. The body mistakenly attacks its own tissue, leading to significant pain, swelling, and mobility impairments. Rheumatism can gradually spread to more joints and even cause irreversible damage.
Patients often experience a significant reduction in quality of life. Even when inflammation is well controlled, many patients continue to suffer from pain without a clear trigger, which is difficult to treat. Possible causes include sensitization processes, neuropathies (nerve damage), or fibromyalgia.
The good news is: When detected early, RA can be treated effectively – but quick and accurate diagnosis is key. Below, we provide an overview of promising treatment approaches, ranging from medication to cold therapy, which has gained increasing attention in recent years.
This is where our cooling gel Kalter Bruder® comes in: It provides fast relief with its long-lasting and intense cooling effect!

1. Pharmacological therapy

2. Physical & Occupational Therapy

3. The right diet

4. Cold therapy
Relaxation through cooling
This is where our Kalter Bruder® Relax gel makes a difference. Specially formulated for a long-lasting cooling effect, its unique recipe harnesses the fresh gel of the aloe vera plant and arnica, both known for their anti-inflammatory and soothing properties. Key ingredients like menthol and camphor enhance the cooling effect, helping to relieve pain and reduce swelling.
Kalter Bruder® offers a practical and efficient way to leverage the benefits of cold therapy. Its cooling effect delivers gentle, consistent deep cooling without harming the skin or restricting mobility.
THE NATURAL POWER OF KALTER BRUDER®
This unique composition is one of a kind: Our secret formula is specially developed for people with nerve, joint and muscle issues. We harness the power of nature to support your body’s self-healing process. No magic, no frippery. Simply natural.
THE NATURAL POWER OF KALTER BRUDER®
COOLS
The deep cooling effect relaxes your muscles and activates your body's natural regeneration process.
BOOSTS CIRCULATION
Increased blood flow allows harmful substances to be removed more effectively, which accelerates the healing process.
SOOTHES
The medicinal plants have anti-inflammatory properties that can relieve pain and calm nerves.
GIVE YOUR BODY THE REST IT DESERVES.
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Let customers speak for us

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Risk-free trial: 90-day money-back guarantee & free shipping.
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Trusted by over 20,000 customers – certified quality Made in Germany.
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Pure Nature: Premium ingredients like real aloe vera gel, arnica, menthol, camphor & devil’s claw.
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Risk-free trial: 90-day money-back guarantee & free shipping.

Kalter Bruder® Relax – Soothing Cooling Gel for Restless Legs, Polyneuropathy & Sore Joints | 500ml
Success speaks for itself: In hundreds of comments, you’ll find stories of how Kalter Bruder® has helped people who had already tried everything else. The unique formula, crafted from various medicinal plants, can transform your daily life too – give it a try!
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TRUE BROTHERLY LOVE
We are Carsten and Stefan - twins from Lüneburg. We ourselves suffer from RLS and founded Kalter Bruder® to offer an alternative to conventional medicine. With our gel, we’ve truly struck gold. In our magazine, we share insights from studies, provide nutrition and exercise tips, and uncover what you absolutely need to know.