The cleanest, highest-sodium electrolyte you can buy. 5 real ingredients, zero sugar, and the best price per serving anywhere. Guaranteed.
⚡ 830mg Sodium, 250mg Potassium, 240mg Magnesium. The dose your body actually needs. 🚚 FREE fast shipping on every U.S. order 💵 As low as $0.70 per serving. See how we compare to other brands →
Why people switch to Cardnl
✅ Zero sugar, zero calories, zero carbs. Never breaks a fast or kicks you out of ketosis.
✅ Full 830mg sodium dose. Most brands give you 200 to 500mg. We give you what keto, low-carb, and hard-training bodies really lose.
✅ Just 5 clean ingredients. No artificial flavors, no natural "flavors," no dyes, no fillers, no maltodextrin.
✅ Supports real hydration. Helps you avoid the cramps, headaches, and afternoon crash that come with low electrolytes.
✅ Keto, Paleo, Vegan, Whole30, and Carnivore friendly
✅ Made in Colorado, USA with batch testing on every run
✅ Best value on the market. Down to $0.70 per serving, backed by our guarantee.
Real hydration, nothing to hide
Electrolytes are minerals that carry an electric charge, and they run almost everything that matters when you're moving: hydration, nerve signals, muscle contractions, and pH balance. When they run low, you feel it. Fatigue, headaches, muscle cramps, and brain fog.
Most "hydration" mixes bury a tiny electrolyte dose under sugar, dyes, and mystery "flavors." Cardnl does the opposite. Every scoop delivers a serious 830mg of sodium, 250mg of potassium, and 240mg of magnesium, the real amounts your body loses through sweat, low-carb diets, and fasting, with nothing else along for the ride.
Whether you're powering through a hard workout, staying sharp through a fast, or just trying to feel human by 3pm, Cardnl helps keep you dialed in.
5 ingredients. Every one earns its place.
🧂 Redmond Real Salt. Unrefined sodium plus 60+ trace minerals from an ancient Utah seabed. Supports fluid balance and healthy nerve and muscle function.
💪 Magnesium Malate. One of the most absorbable forms of magnesium, chosen to support energy production, muscle function, and recovery.
❤️ Potassium Chloride. Works with sodium to support heart rhythm, nerve signaling, muscle contraction, and fluid balance.
🍋 Citric Acid. From real ingredients. Gives the bright, clean bite and helps your body absorb the minerals more efficiently.
🍬 Reb M Stevia. The premium stevia that tastes the closest to sugar, with zero calories and zero bitter aftertaste. (Cheaper brands use Reb A, which is where that chalky "supplement" taste comes from.)
Why no "natural or artificial flavors"?
At Cardnl, we believe less is more. Artificial flavors are synthetic chemicals that add taste but zero nutrition. "Natural flavors" sound better but are heavily processed and can hide dozens of additives, and they add nothing your body needs either.
So we left them out. Cardnl's salty lemon flavor comes only from real, recognizable ingredients you can pronounce. It's crisp, it's clean, and it's honest.
An incredible salty-lemon taste
Forget syrupy sports drinks. Cardnl's salty lemon is refreshing without being sweet, so it goes down easy first thing in the morning, mid-workout, or during a fast. No sugar bomb, no weird finish.
The best value, period
Cardnl gives you premium, high-sodium electrolytes for a fraction of what the big names charge. Compare us to other brands →
150-serving canister. BEST VALUE. Just $0.80 per serving.
Prefer smaller sizes? We've got you:
| Option |
Price per serving |
| Large 150-serving canister |
$0.80 |
| (4) 30-serving canisters |
$0.87 |
| (3) 30-serving canisters |
$0.93 |
| (2) 30-serving canisters |
$1.00 |
| (1) 30-serving canister |
$1.07 |
| Food Service, (4) large canisters |
$0.70 |
💡 Subscribe & save more. Choose a 1- or 3-month auto-ship and take an extra $2 off. Cancel or change anytime.
Who Cardnl is for
Endurance athletes, CrossFit and gym regulars, keto, low-carb, and carnivore eaters, intermittent fasters, sauna and hot-weather crowds, and anyone who wants clean, effective hydration without the sugar.
How to use it
Add one scoop to 16 oz of water, stir, and drink. It mixes fast and clean, no clumps. Most people reach for it first thing in the morning, before or after training, or during their fasting window to stay hydrated and feel their best.
Supplement facts (per serving)
- Sodium: 830mg
- Potassium: 250mg
- Magnesium: 240mg
- Sugar: 0g
- Calories: 0
- Carbohydrates: 0g
- Flavor: Salty Lemon
Keto, Vegan, Paleo, Non-GMO, Made in Colorado, USA
Frequently Asked Questions
How much sodium is in Cardnl electrolytes? Each serving has 830mg of sodium, well above the 200 to 500mg most electrolyte mixes offer. That higher dose supports almost everyone, and it's especially valuable for people on keto, low-carb, or carnivore diets, who lose more sodium as water retention drops.
Is Cardnl keto-friendly? Yes. Cardnl has zero sugar, zero calories, and zero carbs, so it fits keto, paleo, carnivore, Whole30, and intermittent fasting perfectly. No hidden sugars, nothing that affects ketosis.
What ingredients are in Cardnl electrolytes? Just 5: sodium (830mg), potassium (250mg), magnesium (240mg), Reb M stevia, and citric acid. No artificial colors, no fillers, no preservatives, no "flavors."
How is Cardnl different from LMNT or Liquid IV? Cardnl is clean, minimal, and higher in sodium than most competitors. Unlike Liquid IV, we have zero sugar and zero calories. Compared to LMNT, we skip the added "flavorings." You get electrolytes and a real salty-lemon taste, nothing else, usually at a lower price per serving.
How do I use Cardnl electrolytes? Mix one serving into 16 oz of water and drink. Most people take it first thing in the morning, around workouts, or during fasting windows.
Who should take Cardnl electrolytes? Anyone who needs real electrolyte replenishment: endurance athletes, CrossFit and gym-goers, keto and low-carb eaters, intermittent fasters, outdoor adventurers, and anyone feeling the effects of dehydration.
Can I take Cardnl while fasting? Absolutely. With zero calories, sugar, and carbs, Cardnl won't break your fast. Electrolytes matter most during fasting, because low insulin causes your body to shed more sodium and minerals.
Where is Cardnl made? Cardnl is made in Colorado, USA, with batch testing on every run for quality and consistency.
What sizes are available? 30, 60, 90, 120, and 150 servings, from $1.07 per serving down to $0.80 per serving (and $0.70 on food-service packs). Every order ships free in the U.S.
