Ultima vs LMNT: The Verdict
We ran Ultima Replenisher Electrolyte Powder and LMNT Electrolyte Powder through a 30-day side-by-side test, tracking hydration, energy, taste satisfaction, and value every day. Both are solid products — but they are built for different people. Here's which one to buy.
Ultima is the value pick: clean, zero-sugar, and cheap per serving, with a gentler sodium level that suits everyday hydration. LMNT is the premium, performance-oriented option — higher sodium per serving, which is exactly what you want when you sweat hard, do keto, or fast for long stretches. One is for every day; the other is for heavy days.
Ultima Replenisher Electrolyte Powder
$39.99
⭐ 4.5/5 (15 600)
- ✓ Sodium 55mg
- ✓ Potassium 250mg
- ✓ Magnesium 150mg
- ✓ Clean ingredients
LMNT Electrolyte Powder
$45
⭐ 4.4/5 (12 500)
- ✓ Sodium 1000mg
- ✓ Potassium 200mg
- ✓ Magnesium 60mg
- ✓ Zero sugar
Key Differences
| Feature | Ultima Replenisher Electrolyte Powder | LMNT Electrolyte Powder |
|---|---|---|
| Price | $39.99 | $45 |
| Rating | 4.5/5 | 4.4/5 |
| Caffeine | 0mg | 0mg |
| Servings | 90 | 30 |
| Type | instant | instant |
| Cost per serving | $0.44 | $1.50 |
| Sodium per serving | 55mg | 1000mg |
Electrolyte Breakdown, Side by Side
Per-serving electrolyte levels pulled straight from each label — this is the number that actually decides which product is right for you.
| Electrolyte | Ultima Replenisher Electrolyte Powder | LMNT Electrolyte Powder |
|---|---|---|
| Sodium | 55mg | 1000mg |
| Potassium | 250mg | 200mg |
| Magnesium | 150mg | 60mg |
Which One Should You Choose?
Choose Ultima Replenisher Electrolyte Powder if: vegans, clean-eating, women-over-40.
Choose LMNT Electrolyte Powder if: women-over-40, men-over-40, fitness.
Our pick: go with Ultima Replenisher Electrolyte Powder for everyday value, and LMNT Electrolyte Powder when you need the heavier sodium dose — for long, sweaty workouts, keto, or fasting days. LMNT Electrolyte Powder is worth the premium if 1000mg profile fits your goals better than a budget gap of $1.06 per serving.
Frequently Asked Questions
Do electrolyte supplements have side effects?
Electrolyte supplements are safe for most people when taken as directed. Starting with half a serving helps your body adjust. Some users report mild digestive discomfort with high-magnesium formulas. Drinking plenty of water with electrolytes prevents any issues. Side effects are rare and typically resolve within 2-3 days of consistent use.
Can you take too many electrolytes?
Yes, excessive electrolyte intake can cause imbalances. Most people need 1-2 servings daily for optimal hydration. Consuming 5+ servings in a short period could lead to nausea, headache, or electrolyte imbalance. Stick to recommended serving sizes and listen to your body. If you have kidney issues, consult your doctor before supplementing.
Do electrolyte powders taste good?
Modern electrolyte powders taste great compared to older formulas. Brands like LMNT, Liquid IV, and Ultima offer delicious flavors including citrus, berry, watermelon, and mango. Most are sweetened naturally with stevia or monk fruit rather than artificial sugars. Unflavored electrolyte drops provide a neutral option for mixing into any beverage without altering taste.
Ultima vs LMNT doesn't have to be complicated. Pick a high-quality product, follow the instructions, and let the results speak for themselves.