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First Endurance
EFS Drink Mix
Our analysis — editorial take, not from the label
One 35 g scoop mixed with water supplies 300 mg sodium, 160 mg potassium, and 150 mg magnesium alongside 30 g of carbohydrate (25 g added sugar), positioning it as a combined fuel-and-electrolyte drink rather than a low-sugar hydration mix.
- Sodium
- 300 mg
- Potassium
- 160 mg
- Sugar
- 25 g
- Servings
- 30
Price tier: Mid-range · relative cost per full serving across this database
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Powder in Orange Splash, Fruit Punch, and Sour Watermelon, sweetened with cane sugar and dextrose.
Label verified: July 2026 · View label source
Label data
Per full serving · 30 servings per container · from the manufacturer's panel
| Sodium | 300 mg |
|---|---|
| Potassium | 160 mg |
| Magnesium | 150 mg |
| Sugar | 25 g |
| Proprietary blend | No |
Primary label source: First Endurance — official product page · verified July 2026
Cautions
- Contains 25 g of added sugar per serving as part of a 30 g carbohydrate energy drink; not a low-sugar hydration option.
- 465 mg chloride plus 300 mg sodium per serving is a substantial electrolyte load suited for extended exercise rather than casual sipping.
Formulated for healthy adults — not intended for anyone under 18. Full health & safety notes
Product details
Where this label sits
First Endurance EFS Drink Mix is one of the hydration mixes in the Scoop Sense database. Every active ingredient on the panel is listed with its own dose — nothing is hidden inside a blend total. It runs 30 servings per container at the full labeled serving. Everything on this page comes from the manufacturer's supplement facts panel as of July 2026 — never from the marketing page.
Key ingredients & studied doses
- Sodium · 300 mg. Sodium is the main electrolyte lost in sweat and is studied for its role in fluid balance and hydration during exercise.
- Potassium · 160 mg. Potassium works alongside sodium to support normal fluid balance and muscle function.
- Magnesium · 150 mg. Magnesium contributes to normal muscle and nerve function and to electrolyte balance.
Flavors & sweetener
Powder in Orange Splash, Fruit Punch, and Sour Watermelon, sweetened with cane sugar and dextrose.
Who it's best for
Everyday training and moderate sweat losses — a middling sodium load. The sugar is part of the design, aiding fluid uptake the way oral rehydration research uses glucose — skip it if you want zero sugar. Derived from the label figures above — not medical advice.
How we log this label
Every entry is built the same way: we read the current supplement facts panel, log each disclosed dose, compare it against the amounts used in published research, flag proprietary blends, and state the cautions plainly. The full methodology explains each step.
This label against the research
How we evaluate labelsEach bar shows the amount commonly used in published human research, and where this label's dose falls against it. Research amounts are context, not a recommendation — they are not doses, and nothing here is medical advice.
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Sodium300 mg
The studied range is 300–700 mg of sodium per litre of fluid, and this label does not state the volume to mix a serving into — so its concentration, which is what the range measures, cannot be worked out from the panel. Check the mixing instructions on the pack.
Source: Mosler et al., German Journal of Sports Medicine 2020 (DGE position) — “the optimal sports drink should contain 400-1100 mg / l sodium in addition to carbohydrates (4-8%)”
Common questions about First Endurance EFS Drink Mix
How much sodium is in First Endurance EFS Drink Mix?
300 mg per serving, alongside 25 g of sugar. Sodium is the main electrolyte lost in sweat, but needs vary widely with sweat rate and diet — and daily sodium from food counts toward the same total.
Does First Endurance EFS Drink Mix disclose every dose?
Yes — the label lists an individual amount for each ingredient, with no proprietary blends. That is what the "label fully disclosed" tag on Scoop Sense means, and it is what lets each dose be compared against the amounts used in published research.