Hi,

High-carb fueling works. That’s no longer up for debate.

Serious athletes are taking in 60, 80, 100+ grams of carbs per hour because the performance benefits are real: more energy, better recovery between efforts, and less late-race fade.

But there’s a downside a lot of athletes quietly deal with:

The bloating.

The sloshing stomach.

That “basketball in your gut” feeling after a long session.

And the harder you push carb intake, the more common it becomes.

What happened to Rich Ryan

Rich Ryan is a HYROX World Champion. He didn’t jump straight to 100g/hour fueling - he trained his gut over time, gradually building from 40-50g/hour until his system could handle more.

Then one day he overdid it. Too many carbs, bicarb, and caffeine stacked together. He described it as feeling like getting stabbed in the stomach. Not for an hour. For days.

He immediately ordered SwissRX Happy Tummy.

"The relief was immediate. I started taking it on big carb-volume days and race days. I take it in the morning with my other supplements and it just works."

Now it’s part of his routine before hard quality sessions and race efforts, because the better his gut feels, the more confidently he can fuel.

"If you're consistently experiencing an energy crash during workouts, you're leaving results on the table. One way you can reduce fatigue is by being properly fueled. And the way to be properly fueled is to make sure you have strong gut health. Once you fix the root of the issue, you can fuel better and work harder in training so you can perform better on race day. High carb training works."

What Happy Tummy actually does

Most “debloat” products just mask symptoms.

Happy Tummy was built to address why bloating happens in the first place, especially during high-carb training blocks.

SwissRX formulated it with medical experts and loaded it with ingredients designed to support gut comfort, gut lining integrity, and microbiome health:

  • 10 Billion CFU probiotics including Bacillus coagulans, Lactobacillus plantarum, and Akkermansia muciniphila
  • 3g L-Glutamine to support gut lining repair
  • Slippery Elm + Marshmallow Root to help soothe and protect the digestive tract

All working together to help your gut tolerate the demands of modern fueling.

Only 25 calories and 3g of carbs per serving.

When to Use It

  • Big carb-volume training days
  • Race mornings
  • Travel blocks
  • Anytime your stomach feels off

If you already use Gut Defense, think of Happy Tummy differently:

Gut Defense = repairing the gut lining over time

Happy Tummy = improving digestive comfort and reducing bloating around training

Different jobs. Both important.

The reality is this:

The athletes performing best right now are fueling aggressively.

If your gut can’t keep up, eventually your performance won’t either.

Shop SwissRX Happy Tummy

- Matt

Founder
The Feed