XentaFlex™
XentaFlex™
XentaFlex™
XentaFlex™
XentaFlex™
XentaFlex™
XentaFlex™
XentaFlex™
XentaFlex™
XentaFlex™
XentaFlex™
XentaFlex™

XentaFlex™

Hydration and Joint Support
$59 $99
XentaFlex™ is a daily electrolyte powder that supports joint health and mobility. It combines fast-absorbing AquaLOX® Boswellia, mineral-delivering Rejen™, and essential electrolytes to help maintain joint hydration and comfort. Designed to keep you moving with ease, from the inside out.

Frequency:

1 Jar typically serves 30 servings

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† Testimonials within our advertisement are real life reactions of real customers at Simple Promise™; and were compensated for their time. However their name has been changed for privacy. Individual results may vary.

Please Note: The material on this site is provided for informational purposes only and is not medical advice. Always consult your physician before beginning any diet or exercise program.

XentaFlex™ is powered by a unique blend of electrolytes, taurine, a patented form of Boswellia serrata called AquaLOX® and Rejen™ (a patented fulvic and humic acid complex), designed to go beyond surface-level relief and support joint comfort at the cellular level.
Mix one (1) scoop (4g) into 8-10 fl. oz. of water daily or as recommended by your doctor or healthcare provider.
XentaFlex™ is free from gluten, stimulants, caffeine, fillers, or toxic ingredients commonly found in most products. It’s also Paleo, Keto, and Vegan-friendly, has zero side effects and is easy on the stomach.

XentaFlex™ is produced in the USA, and follows current Good Manufacturing Practice (cGMP), ensuring there is no adulteration of the ingredients.
Works Well With

Combine with our other products for a health boost.

XentaFlex™

Hydration and Joint Support

$59 $99
$59 $99
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Hydrate Your Joints, Relieve the Pain

Your cartilage, connective tissue, and synovial fluid are made up of up to 80% water… And when they dry out, your bones crash into each other like rocks, causing pain, stiffness, and inflammation.

XentaFlex™ is the first joint formula built to rehydrate your joints. It works from the inside out to help restore the fluid cushion between your joints, support electrolyte balance, and promote a healthy inflammatory response. So you can move freely again.

Stimulant &  Caffeine-Free

Stimulant & Caffeine-Free

Gluten-Free

Gluten-Free

Non-Carbonated & Gut-Friendly

Non-Carbonated & Gut-Friendly

Keto, Paleo &  Vegan-Friendly

Keto, Paleo & Vegan-Friendly

How XentaFlex™ Works

01

Rehydrates Joints

Delivers essential electrolytes and taurine to help restore joint fluid and support mobility.1

02

Cushions Movement

Helps keep cartilage hydrated so joints glide smoothly, not grind.

03

Fuels Joint-Muscle Function

Potassium and sodium support muscle signaling and reduce cramping.2

04

Boosts Nutrient Absorption

Rejen™ fulvic complex enhances mineral uptake for better joint tissue support.3

05

Supports Natural Inflammation Response

AquaLOX® Boswellia is clinically studied to promote joint comfort and flexibility.5

06

Clean Daily Support

Does NOT include caffeine. Just hydration-first joint relief, every day.

How XentaFlex™ Works

Our Ingredients

XentaFlex™ is powered by a unique blend of electrolytes, L-Taurine, a patented form of Boswellia serrata called AquaLOX® and Rejen™ (a patented fulvic and humic acid complex), designed to go beyond surface-level relief and support joint comfort at the cellular level.

Every scoop delivers a clinically crafted blend of hydrating electrolytes and joint-rejuvenating ingredients.

AquaLOX® (Patented Boswellia Serrata)
AquaLOX® (Patented Boswellia Serrata)

This clinically studied extract delivers one of the highest concentrations of AKBA, Boswellia’s most powerful active compound. AquaLOX® is designed for fast absorption and helps promote a healthy inflammatory response, so your joints stay cool, calm, and mobile. Clinically shown to improve joint function in as little as 5 days.5

Rejen™ (Patented Fulvic & Humic Acid Complex)
Rejen™ (Patented Fulvic & Humic Acid Complex)

Rejen™ acts like a cellular delivery system, helping electrolytes and nutrients get where they’re needed most. Your joints. It supports deep hydration, mineral absorption, and the natural processes that keep your joints resilient and ready for action.6

L-Taurine
L-Taurine

An amino acid that helps regulate electrolyte balance and supports cellular hydration — especially in muscle and joint tissues. Taurine also supports neuromuscular coordination, which is essential for smooth, pain-free movement.7

Potassium Chloride
Potassium Chloride

An essential electrolyte that helps maintain fluid balance in joint and muscle tissue, supports nerve transmission, and plays a key role in reducing stiffness by improving cellular hydration.8

Sea Salt (Natural Sodium Source)
Sea Salt (Natural Sodium Source)

Provides natural sodium, which works synergistically with potassium and taurine to optimize hydration and maintain joint lubrication. Sodium also aids in nutrient transport and supports muscle-joint function.9

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Love It or It’s Free: Our 365-Day MoneyBack Guarantee

We are confident in every one of our supplements. If at any time during those 365 days you aren’t 100% satisfied with your order, simply return it for a full and immediate refund. No questions asked.

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Have any questions?

Chat with our customer support team.
Monday - Friday, 9am - 6pm.

What does XentaFlex™ do?
XentaFlex™ is a hydration-based joint support formula designed to help you move more freely and comfortably. It works from the inside out, starting at the cellular level, by supporting joint hydration, electrolyte balance, and a healthy inflammatory response. That means more flexibility, less stiffness, and better mobility without relying on temporary, surface-level relief.
How do I take XentaFlex™?
It’s super simple. Just mix one scoop of XentaFlex™ with 8–10 fl. oz. of water once per day, ideally in the morning. Most people say it tastes great and becomes a quick part of their daily routine.
Can I buy XentaFlex™ in stores?
No. To keep every batch as fresh, powerful, and direct-from-the-source as possible, XentaFlex™ is only available through our official website. This ensures optimal potency, purity, and fast shipping straight to your doorstep.
Can I take XentaFlex™ with other supplements or medications?
XentaFlex™ is made with naturally derived ingredients and is generally well tolerated. That said, if you're currently taking medication or have a medical condition, we always recommend speaking with your healthcare provider before adding any new supplement to your routine.
How long before I feel it working?
Many people report noticing a difference in mobility and stiffness within the first few days, especially when used consistently. But like any high-quality supplement, XentaFlex™ works best when taken daily over time to support long-term joint health and hydration.
What if it doesn’t work for me?
We’re confident that you’ll feel the XentaFlex™ difference, but if you don’t, you’re fully covered by our 365-day, 100% money-back guarantee. Try it risk-free. If you’re not happy for any reason, just send back your empty container and we’ll refund every penny. No hassle. No questions asked.
What makes XentaFlex™ different from other joint supplements?
Great question. Most joint support products focus only on masking discomfort or take months to work.

XentaFlex™ takes a different approach by targeting joint hydration and electrolyte balance, two key factors in mobility that are often overlooked. It also contains clinically studied AquaLOX® for joint comfort and patented Rejen™ fulvic and humic acid for cellular hydration, making it one of the only formulas of its kind.
Is XentaFlex™ safe to take long-term?
Yes, XentaFlex™ is designed for daily, long-term use.

All ingredients are tested for purity and potency, and the formula is manufactured in a facility that follows Good Manufacturing Practices (GMP). As always, if you’re managing a health condition or taking medication, check with your doctor before use.
Do I need to consult my doctor before starting XentaFlex™?
Yes, it's recommended to consult your doctor prior to starting any new supplement to ensure it's appropriate for your health needs and won't interfere with any medications you are taking.

Have any questions?

Chat with our customer support team.
Monday - Friday, 9am - 6pm.

You May Also Like

1 https://pmc.ncbi.nlm.nih.gov/articles/PMC3501277/
2 https://pmc.ncbi.nlm.nih.gov/articles/PMC1150229/
3 https://docs.google.com/document/d/1hRK8bwIde7Rc-DC-mvKbPwYVXQXHv3OT/edit
4 https://docs.google.com/document/d/1hRK8bwIde7Rc-DC-mvKbPwYVXQXHv3OT/edit
5 https://www.plthealth.com/resources/plasma-concentrations-of-boswellic-acids-in-fasting-healthy-humans-supplemented-with-a-water-soluble-vs-reference-bse
6 https://docs.google.com/document/d/1hRK8bwIde7Rc-DC-mvKbPwYVXQXHv3OT/edit
7 https://pmc.ncbi.nlm.nih.gov/articles/PMC5933890/
8 https://pubmed.ncbi.nlm.nih.gov/24721891/
9 https://pubmed.ncbi.nlm.nih.gov/11131686/