INTRODUCING
YelloCard
redefining Cramp Control
Engineered for the elite athlete or weekend warrior. YelloCard utilizes FlashRelease™ technology to deliver rapid, targeted cramp relief through altered neuromuscular control, not just electrolyte replacement.
CRamps End here
Why is YelloCard a Cramp Revolution?
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Immediate acting!
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Oral dissolving films break the cramp reflex in seconds
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Lightweight!
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Each film weight less than 1 once
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No more heavy & bulky liquids
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Light is FAST!
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Science wins!
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Read on to learn more about what really causes cramps
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Made by athletes for athletes
Why YelloCard?
What have we been doing wrong?
YelloCard was born from a simple realization: muscle cramps aren't just about dehydration or missing electrolytes—they're a neurological glitch. For decades, athletes were told to reach for salts and hydrate, yet the cramps keep coming. Exercise science studies reinforce this paradigm - so why do we continue following this old wise tale?
We've replaced bulky liquid bottles with a precise, ultra-light oral dissolving film (ODF) that melts on your tongue. It's science-driven, athlete-tested, and built to keep you moving when your body tries to pull the emergency brake.
THE FIX
the truth
We looked at the science of exercise-associated muscle cramps (EAMCs) and found that regaining control can actually start in the mouth, not the gut. By using the intense sensory activation of TRPV1 and TRPA1 receptors—inspired by the fast-acting effects of pickle juice and cayenne but refined for high-performance needs—YelloCard's FlashRelease™ technology hits the reset button on your nervous system instantly and settles a misfiring nerve.
How to Use YelloCard
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Do you FEEL IT?
You’re mid-race and feel that sneaky little 'uh-oh' twitch in your muscle. We know that nervous feeling—you're just one awkward stride away from a full lockdown! Don't let that tiny warning stop your fun; you've got this handled.
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DISSOLVE IT
When you flash that bright yellow pack, you’re instantly part of the in‑the‑know crew that refuses to let cramps win. Time to take out your YelloCard, tear open the foil like you’re unwrapping a tiny superpower, and place one strip on or under your tongue. Let it dissolve while you keep moving—no chugging, no mess, just you and your comeback.
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BREAK IT
Think of a cramp as your motor units getting their wires a bit crossed. Instead of smooth, coordinated firing, you get too much excitatory input from muscle spindles and not enough calming feedback from the Golgi tendon organs (GTOs) once fatigue sets in. The goal of smart cramp treatment is to nudge that alpha motor neuron activity back into balance, so the muscle can stop shouting and go back to doing its job.
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Feel the ZING. Feel the RELIEF
Seconds later, that intense flavor zing hits your tongue, resetting the cramp signal instantly. Your muscle finally chills out, your stride returns, and you’re focused on the finish line, not the exit.
5 Oral Dissolving Films Per Pack
Dissolve 1 strip on or under your tongue when you first feel a cramp coming on
The spicy pickle flavoring is a purposeful ZING to your mouth to break that cramp reflex
Expect cramp relief within 20 to 60 seconds. Repeat strip as necessary
Each strip weighs less than 1 ounce
Quick, convenient tear-open sachets for on the run use