Science

What the studies show.

Third Lung

Third Lung

Beta-alanine 3 g

A 2012 meta-analysis of 15 trials found beta-alanine improved high-intensity exercise lasting about 60–240 seconds versus placebo.

Hobson et al., 2012 · Amino Acids

L-citrulline 3 g

A 2020 review of human trials reported that oral L-citrulline can raise plasma arginine and that some studies saw better exercise performance or recovery. We use it as a nitric-oxide pathway ingredient

Gonzalez & Trexler, 2020 · J Strength Cond Res

Betaine anhydrous 2.5 g

A 2013 randomized trial in resistance-trained men used 2.5 g/day betaine and reported changes in body composition and performance versus placebo. We use this same dose.

Cholewa et al., 2013 · J Int Soc Sports Nutr

Terminalia arjuna 750 mg

An 8-week trial in healthy young adults gave 500 mg/day arjuna bark extract and reported improvements in VO2 max and related endurance measures versus placebo.

Sandhu et al., 2010 · Int J Ayurveda Res

Rhodiola rosea 300 mg

In a double-blind crossover trial, an acute rhodiola dose before a cycling time trial was associated with a faster finish and a lower rating of perceived exertion than placebo.

Noreen et al., 2013 · J Strength Cond Res

Ashwagandha 300 mg

An 8-week randomized trial used 300 mg ashwagandha root extract twice daily and reported greater strength and recovery measures than placebo in men doing resistance training.

Wankhede et al., 2015 · J Int Soc Sports Nutr
Enduralyte

Enduralyte

Sodium 1000 mg

Sweat is mostly water and sodium. When heavy water losses through sweat go unreplaced, you start to dehydrate. Sodium helps the body hold that fluid so blood volume can remain consistent. Drinking plain water during high sweat sessions can actually drop sodium levels even more, exacerbating dehydration. Drinking water without replacing lost salts can rapidly dilute the remaining sodium in your bloodstream, potentially causing a condition known as exercise-associated hyponatremia.

We are not here to tell you this product will you into Usain Bolt or an ultra-marathon endurance specialist overnight.

What we can say: in a session where you are pouring sweat, staying hydrated and attempting to replace what you lose can let you push harder, go longer, and feel better.

Enduralyte is formulated as a concentrated (in both ingredients and flavor) supplement for the purpose of tailored and maximum cost effectiveness to you. Dosing a full scoop when waterloss is extreme, or a 1/4 to 1/2 scoop when it is not — one container can last you multiples of other brands. Compare for yourself!

Armstrong, 2021 · Nutrients Otsuka · Replenishing fluids and salts Cleveland Clinic · Water intoxication

Potassium 1000 mg

Potassium is the main electrolyte inside cells. Nerves, skeletal muscle, and the heart use it to fire. Potassium works with sodium to control fluid balance. The U.S. Food and Drug Administration (FDA) sets the official Daily Value (DV) for potassium at 4,700 milligrams (mg) per day for adults and children aged 4 and older. One full serving of Enduralyte is 1,000 mg of potassium — a large piece of that daily gap. People with kidney disease or on ACE inhibitors, ARBs, or potassium-sparing diuretics should not use this without consulting a clinician.

NIH ODS · Potassium fact sheet

Magnesium 100 mg

Helps muscles relax after they contract; supports nerve signals and heart rhythm. Required for energy production and hundreds of enzyme reactions, and involved in blood-pressure regulation.

NIH ODS · Magnesium Zhang, 2017 · Nutrients

Calcium 100 mg

Calcium is present in sweat in smaller amounts. We included it in a small amount for additional electrolyte coverage and synergy.

Baker & Wolfe, 2020
IntraEngine

IntraEngine

Cluster Dextrin 20 g

>

Carb10 10 g

FitNox 300 mg

TerraCaf 100 mg

S7 100 mg

AstraGin 25 mg

Why Cluster Dextrin (HBCD)

Highly Branched Cyclic Dextrin clears the stomach fast (low osmolality — less "sloshing" than dextrose) then releases glucose steadily so you get sustained energy without the spike-and-crash. That means fuel for working muscles with a smoother ride mid-session.

Research has linked HBCD fluids to faster gastric emptying and lower perceived exertion vs traditional carbs.