Intact Endurance™ for Athletes

For athletes

The evening foundation for the body that trains hard and has to recover.

Intact Endurance™ is built on Nutri-Mastic™ — roughly 360 mg of elemental magnesium per serving plus a full ionic mineral panel — to support muscle recovery, hydration, and normal overnight recovery.

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Trail runner with Intact Endurance™ at sunset

Why athletes run it

The daily rebuild layer — mineral and botanical, taken in the evening, built for the body that trains 4+ days a week.

Recovery support

A full ionic mineral panel plus mastic gum, formulated to support muscle recovery after hard training.

Hydration & electrolytes

Sodium, potassium, magnesium, chloride and more — to support hydration and electrolyte balance for athletes who sweat.

Evening magnesium

About 360 mg of elemental magnesium per serving — widely recognized for supporting normal sleep quality and overnight recovery.

Clean & simple

No caffeine, no stimulants, no thermogenics — mineral and botanical only, with the full ingredient panel on the label.

The math

~$0.78 / day
~$0.70 / day on Subscribe & Save

$49.99 per bottle — about 64 servings. Save 10% on every shipment with Subscribe & Save. Skip, swap, or cancel anytime.

How to use it

¾ teaspoon in the evening, mixed into water. Most athletes dose at night for the magnesium overnight-recovery benefit, but it works any time it fits your routine.

Build the household stack

Same Nutri-Mastic™ foundation, dosed for the rest of the house and the barn.

Pet Intact™ — for the dog & cat

One drop per 10 lb. Daily nutritional support for the four-legged family.

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Equine Intact™ — for the horse

One scoop a day for the working, showing, or recreational horse.

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Athlete questions

Does it contain caffeine or any stimulants?
No. No caffeine, no synthetic stimulants, no thermogenics. Intact Endurance™ is the daily rebuild layer, not a pre-workout.
Will it interfere with my pre-workout, protein, or creatine?
No. Intact Endurance™ is mineral and botanical and does different work than stimulation or protein supplements. Most athletes use them alongside each other.
Am I covered for banned-substance testing?
The ingredients are mineral and botanical. We do not currently carry NSF, USP, WADA, or USADA certifications — competitive athletes under banned-substance rules should confirm eligibility with their governing body.
Why evening instead of morning?
The ~360 mg of magnesium per serving is widely recognized for supporting normal sleep quality and overnight recovery, so most people prefer an evening dose. Morning works fine if it fits your routine better.
Subscribe & Save — what's the catch?
Same product, 10% off every shipment, on the cadence you choose. Skip, swap, or cancel anytime from your account. No catch.
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These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before use, especially if you are pregnant, nursing, taking medication, or managing a medical condition.