🏆 SMART LIVING FINDS BEST PICKS
Best Electrolytesfor Fasting
Finding the best electrolytes for general depends on hydration strength, formula fit, portability, value and how you plan to use the product. We reviewed these database-backed picks for real-world suitability and organized them to make the decision faster.
AT A GLANCE
The Winners
1Best OverallFAST LYTE Fasting Electrolyte Powder (Unflavored)575 mg sodiumView Pick →
2Best High-Sodium PickLMNT Electrolyte Drink Mix1,000 mg sodiumView Pick →
3Best Sugar-Free PickHackU HydrationElectrolytes Plus Skin Support400 mg sodiumScore 8.4View Pick →
4Best High-Sodium PickRe-Lyte Hydration Electrolyte Mix810 mg sodiumView Pick →
5Best Sugar-Free PickUltima Replenisher Electrolyte Mix55 mg sodiumView Pick →
6Best Sugar-Free PickBuoy Hydration Drops50 mg sodiumView Pick →
7Best Sugar-Free PickXTEND Healthy Hydration450 mg sodiumScore 4View Pick →
8Best Sugar-Free PickWaterboy Daily Hydration Electrolyte Drink Mix550 mg sodiumView Pick →PERSONALIZED ELECTROLYTE FINDER
Not sure which general pick fits you?
Answer a few quick questions about sweat level, activity length, sugar preference and budget.
SMART LIVING FINDS PICK
FAST LYTE Fasting Electrolyte Powder (Unflavored)
FAST LYTE is a zero-sugar electrolyte powder formulated specifically for fasting, keto, carnivore, and low-carb lifestyles. It delivers exceptionally high potassium, balanced sodium, magnesium, calcium, and more than 74 trace minerals to support hydration and mineral replenishment.
Intermittent fasting
Keto diets
Carnivore diets
Heavy mineral replenishment
Low-carb lifestyles
- Extremely high potassium
- Zero sugar
- Excellent fasting formula
- Keto friendly
- Carnivore friendly
- 74+ trace minerals
- Unflavored mineral taste
- Higher potassium than many people need
- Not designed primarily for endurance sports
- Requires measuring
SMART LIVING FINDS PICK
LMNT Electrolyte Drink Mix
High-sodium, zero-sugar electrolyte mix designed for keto, fasting, endurance athletes, and heavy sweaters.
Fasting
Heavy sweaters
Endurance athletes
Low-carb lifestyles
- Zero sugar
- Very high sodium
- Excellent for keto
- Supports fasting
- Mixes easily
- Simple ingredient list
- Higher sodium than most people need
- Premium price
- Salty taste isn't for everyone
- Limited retail availability
SMART LIVING FINDS PICK
HackU HydrationElectrolytes Plus Skin Support
A 400 mg sodium electrolyte packet that pairs magnesium glycinate and potassium with hyaluronic acid and Ceramosides for a skin-hydration angle.
- Balanced 400 mg sodium and 200 mg potassium
- magnesium glycinate
- zero sugar
- includes vitamin C, hyaluronic acid, and Ceramosides
- vegan and gluten-free.
- High $2.80 cost per serving
- specialized skin ingredients may not add value for every shopper
- sweetener and complete ingredient list should be confirmed.
SMART LIVING FINDS PICK
Re-Lyte Hydration Electrolyte Mix
High-sodium electrolyte mix featuring Redmond Real Salt® and trace minerals for fasting, keto, endurance, and heavy sweating.
- Very high sodium
- Excellent electrolyte balance
- Contains trace minerals
- Zero sugar
- Natural ingredients
- Stevia sweetened
- Very salty flavor
- More sodium than many people need
- Premium price
- Not ideal for casual hydration
SMART LIVING FINDS PICK
Ultima Replenisher Electrolyte Mix
Zero-sugar electrolyte mix designed for everyday hydration, keto lifestyles, and daily wellness with balanced minerals and excellent value.
- Zero sugar
- Excellent taste
- Low sodium for daily hydration
- High potassium and magnesium
- Large 45-serving container
- Keto friendly
- Not ideal for heavy endurance athletes
- May not replace enough sodium during prolonged sweating
- Contains stevia, which some people dislike
SMART LIVING FINDS PICK
Buoy Hydration Drops
Flavorless electrolyte drops with 87 trace minerals that turn any beverage into a hydrating drink without sugar, sweeteners or calories.
- Unflavored
- Zero sugar
- Zero calories
- No sweeteners
- 120 servings per bottle
- Works in coffee, tea, smoothies and water
- Low sodium for endurance athletes
- Higher upfront cost
- Not ideal for heavy sweating
- Requires measuring squeezes
SMART LIVING FINDS PICK
XTEND Healthy Hydration
XTEND Healthy Hydration provides 450 mg sodium, 380 mg potassium, 40 mg magnesium, phosphorus, and a broad vitamin blend with only 5 calories.
Heat
Travel
Daily sports hydration
Recovery
- 450 mg sodium
- 380 mg potassium
- Only 5 calories
- Broad vitamin blend
- Portable packets
- Uses artificial sweeteners
- Magnesium oxide form
- Not NSF Certified for Sport
- Product naming has changed across the XTEND line
SMART LIVING FINDS PICK
Waterboy Daily Hydration Electrolyte Drink Mix
Balanced, zero-sugar hydration designed for everyday use, travel, workouts, and hot weather.
- Zero sugar
- Balanced electrolyte profile
- Moderate sodium for daily hydration
- Travel-friendly stick packs
- Excellent taste
- Keto friendly
- Expensive per serving
- Lower sodium than products designed for endurance athletes
- Contains stevia
- Only 12 servings per box
OUR TOP RECOMMENDATION
If you choose just one: FAST LYTE Fasting Electrolyte Powder (Unflavored)
FAST LYTE stands out for its exceptionally high potassium, balanced mineral profile, and zero-sugar formula. It's one of the best electrolyte products for fasting and low-carb lifestyles, emphasizing mineral balance over extreme sodium replacement.
SMART LIVING FINDS WINNERFAST LYTE Fasting Electrolyte Powder (Unflavored)OUR METHODOLOGY
How We Chose
We considered formula strength, intended use, portability, value, product data completeness and overall suitability for general. Rankings are prepared from the Smart Living Finds product database and remain subject to editorial review.
BUYING GUIDANCE
Frequently Asked Questions
What should I look for in an electrolyte for general?
Match sodium and carbohydrate levels to your activity, climate, sweat rate and dietary needs. Convenience and taste also matter because the best option is one you will use consistently.
Which electrolyte is best for me?
Your ideal pick depends on your sweat rate, activity length, diet and budget. Use the Electrolyte Finder for a personalized match →