Not all electrolyte drinks are made for the same purpose. Some focus on high sodium and performance, while others prioritize clean ingredients and everyday hydration. Two popular options that often get compared are ReLyte (by Redmond) and Ultima Replenisher.
At first glance, both are zero-sugar electrolyte powders — but in reality, they’re built for very different hydration needs. Let’s break it down clearly.
Why Electrolytes Matter
Electrolytes like sodium, potassium, magnesium, and calcium help your body:
- Retain fluids properly
- Prevent cramping and fatigue
- Support nerve signaling and muscle contraction
- Maintain hydration during sweat, heat, or fasting
Plain water works for normal days, but when electrolyte loss increases, replacement becomes important.
What Is ReLyte?
ReLyte is a high-sodium electrolyte mix made by Redmond, the brand behind Redmond Real Salt. It’s designed for people who sweat heavily, follow low-carb or keto diets, or need aggressive electrolyte replacement.
ReLyte uses real sea salt as its sodium source and avoids sugar entirely.
Best for:
- Heavy sweating
- Intense workouts
- Keto / low-carb diets
- Fasting or hot environments
What Is Ultima Replenisher?
Ultima Replenisher is a zero-sugar electrolyte powder focused on daily hydration and clean wellness. It contains a broader mineral blend but in lower doses, making it easier to drink throughout the day.
Ultima emphasizes taste, variety of flavors, and clean ingredients over high sodium.
Best for:
- Everyday hydration
- Light activity
- Clean-label wellness routines
- People sensitive to salt
ReLyte vs Ultima: Head-to-Head Comparison
| Feature | ReLyte (Redmond) | Ultima Replenisher |
|---|---|---|
| Primary Goal | High-sodium electrolyte replacement for sweat, keto, fasting | Everyday clean hydration |
| Key Electrolytes (per serving) | Sodium 810 mg, Potassium 400 mg, Magnesium 60 mg | Potassium 250 mg, Magnesium 100 mg, Calcium 65 mg, Sodium 55 mg |
| Sugar | 0 g | 0 g |
| Sweetener | Stevia leaf extract | Stevia leaf extract |
| Artificial Colors | ❌ None | ❌ None |
| Flavors | Lemon Lime, Mixed Berry, Strawberry Lemonade, Mango | Lemonade, Raspberry, Grape, Cherry Pomegranate, Blue Raspberry, Passionfruit, Pink Lemonade, Orange (8+ flavors) |
| Price | ~$45–$50 for 60 servings (≈ $0.75–$0.85 per serving) | ~$40–$45 for 90 servings (≈ $0.45–$0.50 per serving) |
| Best For | Heavy sweating, keto/low-carb, fasting, intense workouts | Daily hydration, light activity, all-day sipping |
Final Verdict: Which One Should You Choose?
Choose ReLyte if:
- You sweat heavily or train hard
- You follow keto or low-carb
- You need high sodium support
- You care more about function than flavor
Choose Ultima if:
- You want clean, everyday hydration
- You prefer great taste and variety
- You’re lightly active or sipping all day
- You want a more affordable long-term option
Bottom Line
- ReLyte = performance-level electrolyte replacement
- Ultima = daily wellness hydration
They aren’t direct substitutes — they’re built for different hydration jobs.