During-effort fuel · electrolyte · reviewed 3 Sep 2026
Skratch Labs Unsweetened Hydration Sport Drink Mix 45
The same 400 mg of sodium as Skratch's own Sport Hydration Drink Mix, but with the 19 g of carbohydrate and all the sugar stripped out -- and you pay $1.65 instead of $1.20 for that same sodium dose.
Score breakdown
Each dimension below is scored 0 to 100 against a fixed scale, not against the rest of the catalog, so adding a product never moves this number. The overall score is the average of the dimensions this product declares data for. How the scales are set →
45/100
Mixed
Sodium dose ?Sodium per serving, on a scale topping out at 1000 mg -- a single dose covering the top of what's typically lost to sweat in an hour.40
Value (cost/1000mg Na) ?What it costs to get 1000 mg of sodium from this product. Not physiological -- a market-based scale from $3.00 (0) to $1.00 (100).0
Potassium ?Potassium per serving, on a scale topping out at 200 mg -- roughly the upper end of typical hourly sweat loss.50
Calcium ?Calcium per serving. Weaker grounding than sodium/potassium -- sweat calcium loss is minor and not really a primary target during exercise; the 100 mg ceiling is this catalog's practical high end, not a physiological one.50
Magnesium ?Magnesium per serving, on a scale topping out at 60 mg, roughly matching cited hourly sweat-loss ranges.83
Cost per 1000mg sodium
$4.13/1000mg
Sodium per packet
400mg
Comparison
6 of 14 electrolytes heldPrices per single sachet at the cheapest box size we track. Best in green, worst in red, across the gels shown.
| Measure | Skratch Labs Skratch Labs Unsweetened Hydration Sport Drink Mix | LMNT LMNT Citrus Salt | Nuun Nuun Sport | Precision Fuel & Hydration Precision Fuel & Hydration PH 1000 | Science in Sport SiS GO Hydro | 4Endurance 4Endurance Electrolytes |
|---|---|---|---|---|---|---|
| Overall scoreAn average of the various variables measured. | 45 | 75 | 37 | 36 | 44 | 50 |
| SodiumThe main electrolyte lost in sweat, and the biggest single driver of cramping and hyponatremia risk. | 400 mg | 1000 mg | 300 mg | 500 mg | 345 mg | 250 mg |
| PotassiumWorks alongside sodium in muscle and nerve function. | 100 mg | 200 mg | 150 mg | 130 mg | 65 mg | 70 mg |
| CalciumInvolved in muscle contraction; lost in far smaller amounts than sodium. | 50 mg | 0 mg | 13 mg | 20 mg | 102 mg | 10 mg |
| MagnesiumSupports muscle and nerve function; some evidence it blunts cramping. | 50 mg | 60 mg | 25 mg | 10 mg | 8.1 mg | 50 mg |
| CarbohydrateMinimal by design. This is a hydration product, not a fuel source. | 1 g | 0 g | 4 g | 3 g | 0.9 g | 0 g |
| Price per packetWhat one packet costs. | $1.65 | $1.50 | $0.75 | $1.20 | $0.75 | $0.27 |
| Cost per 1000mg sodiumThe only price that compares across different sodium concentrations. | $4.13 | $1.50 | $2.50 | $2.40 | $2.17 | $1.08 |
Verdict
what it does · what it costsWhat it does well
- 400 mg sodium per packet, matching Skratch's sweetened Sport Hydration Drink Mix exactly, with 0 g sugar instead of that product's cane sugar.
- 50 mg magnesium and 50 mg calcium per packet -- among the higher combined magnesium+calcium doses of any electrolyte product in this catalog.
- Essentially calorie-free (10 kcal, ~1 g carb) if you're getting your carbohydrate from a separate gel or drink and just want electrolytes.
- Same clean-label approach as the rest of the Skratch line -- ten ingredients, all recognizable, no artificial sweeteners.
What it costs you
- Costs 45 cents more per serving than Skratch's own sweetened Sport Hydration Drink Mix for the identical 400 mg sodium dose -- you're paying a premium to remove the sugar.
- Only two flavors (Lemon + Lime, Salted Margarita) versus more options in Skratch's sweetened line.
- Calories run 5-10 depending on flavor per Skratch's own FAQ -- not a meaningful difference, but not perfectly flat either.
- 20-pack box price here is calculated from the single-packet price (20 x $1.65); Skratch's site did not display a separate aggregate 20-pack total at time of review.
Where to buy
Prices and links as last checked. The price next to the name above is per unit at the cheapest box size we track -- a single-unit price below may run higher.
Who this is for
the numbers, appliedThe field tells you what it is. This is who should act on it.
Worth the money if
- You want Skratch's formula and clean ingredient list but zero sugar and near-zero calories.
- You're already carrying carbohydrate separately and just need the 400 mg sodium dose without added calories.
Look elsewhere if
- You want the cheapest possible cost per 1000 mg of sodium -- High5 Zero (54 cents/tablet, 250 mg Na) and 4Endurance Electrolytes (27 cents/tablet) both beat it on pure cost.
- You want some carbohydrate alongside your electrolytes -- that's what Skratch's regular Sport Hydration Drink Mix is for.