Posted by Team Tune
on July 04, 2026
Ultima got the clean part right early: zero sugar, zero calories, plant-based sweeteners, real fruit flavors. For a lot of people it was the first electrolyte powder that did not taste like a chemistry set or a candy bar. Genuinely nice work.
The catch is what is actually in the scoop.
The labels, side by side
| Per serving | Tune Current | Ultima Replenisher |
|---|---|---|
| Sodium | 500 mg | 55 mg |
| Potassium | 330 mg | 250 mg |
| Magnesium | 220 mg, three forms | 100 mg (citrate) |
| Chloride | 1,060 mg | ~78 mg |
| Vitamin C | 500 mg | 100 mg |
| Vitamin D3 | 25 mcg | none |
| B vitamins | 6, methylated and bioactive | none |
| Trace minerals | 75+ | small blend |
| Sugar | 0 g | 0 g |
Numbers from published labels at time of writing. Verify current labels, formulas change.
55 mg of sodium is a philosophical choice
Ultima deliberately keeps sodium minimal, betting that customers fear salt. But sodium is the electrolyte you actually lose in sweat, roughly 500 to 1,500 mg per hour of hard exercise. An electrolyte drink with 55 mg of sodium is like a raincoat that dissolves in rain: fine until you use it for its stated purpose.
Tune Current carries 500 mg of sodium plus 1,060 mg of chloride, calibrated to replace real losses without blowing past anyone's daily budget.
Credit where due, then the gap
Ultima's 100 mg of magnesium citrate and 250 mg of potassium are respectable, better than most of the category, as our audit in The Magnesium Gap shows. And 100 mg of vitamin C is a nice touch.
Current goes further on every line: 220 mg of magnesium from three forms instead of one, 330 mg of potassium, five times the vitamin C, plus what Ultima does not attempt at all: vitamin D3 at 125% DV, a six-vitamin B complex in methylated and bioactive forms, 75+ ionic trace minerals from inland seawater, and the VitAlign antioxidant complex.
Flavor without compromise
Worth saying: clean taste is not a differentiator anymore. Current is sweetened the same way Ultima is, with stevia and monk fruit, no sugar, no dyes. The difference is what dissolves alongside the flavor.
Who should pick which
Pick Ultima if: you mainly want a flavored zero-calorie water enhancer with a light mineral touch, and sweat replacement is not really the job.
Pick Tune Current if: you want the same clean-label standard with doses that hold up: real sodium for hydration, half your daily magnesium, and a complete vitamin and trace mineral layer.
FAQ
How much sodium is in Ultima?
55 mg per serving, among the lowest in the category. Tune Current contains 500 mg.
Is low sodium better in an electrolyte drink?
Not if you sweat. Sodium is the primary electrolyte lost in sweat. Low-sodium mixes suit people replacing soda, not people replacing sweat.
Does Tune Current taste artificial?
No. Natural flavors sweetened with stevia and monk fruit, zero sugar and zero artificial sweeteners.
Keep exploring: see how 8 electrolyte powders compare, dig into the magnesium data, or try Tune Current.
Current is a dietary supplement. These statements have not been evaluated by the FDA. Not intended to diagnose, treat, cure, or prevent any disease.
