The first few hours of a fast are easy. It’s that middle stretch, around hour 16 to 20, where the mental chatter starts—your brain fixates on food, energy dips, and the temptation to break early hits hardest. The right supplements don’t just replace electrolytes; they actively suppress that gnawing hunger, stabilize your energy curve, and make the full fast window achievable without suffering.
I’m Mohammad — the founder and writer behind ProteinJug. I’ve spent years analyzing supplement formulations, digging into clinical dosages of ingredients like Chromax and magnesium glycinate, and cross-referencing label claims with real-world customer outcomes in the fasting space.
Whether you’re doing intermittent fasting, OMAD, or extended water fasts, finding the right ally is critical. This guide breaks down the top formulations for energy, electrolyte balance, and appetite control so you can choose the best fasting supplements for your routine.
How To Choose The Best Fasting Supplements
Not all powders are created equal when your stomach is empty. The wrong sweetener can spike insulin; the wrong magnesium can cause digestive distress. Focus on these four variables to avoid breaking your fast or your willpower.
Sodium Load & The 2:1 Ratio
During fasting, sodium excretion increases significantly. You need a meaningful dose—around 1000 mg per serving—to prevent headaches and dizziness. Look for a sodium-to-potassium ratio near 2:1, which mirrors the body’s natural electrolyte balance and prevents the jitters or crashes.
Appetite Suppressant Additives
Plain electrolytes hydrate but don’t kill hunger. The best fasting supplements include ingredients like Chromax (chromium picolinate), which clinical studies show reduces cravings and stabilizes blood glucose. Ginger root extract is another useful addition that soothes the digestive tract during empty-stomach hours.
Bioavailable Magnesium Form
Magnesium glycinate absorbs efficiently and avoids the laxative effect of magnesium oxide. This matters during a fast because loose stools accelerate dehydration. Glycinate also promotes calmness, which helps with sleep quality during prolonged fasts.
Trace Mineral Complexity
Unrefined sea salt or Himalayan pink salt delivers 60+ trace minerals that commercial table salt lacks. These micronutrients support enzymatic function and reduce the “flat” feeling that often accompanies extended fasts. Real Salt from Redmond or blends with coconut water powder offer this depth.
Quick Comparison
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| Model | Category | Best For | Key Spec | Amazon |
|---|---|---|---|---|
| Ultima Replenisher Crave Killer | Electrolytes + Craving Control | Appetite suppression during fasts | 100 mg Chromax per serving | Amazon |
| REDMOND Re-Lyte Variety Pack | Trace Mineral Electrolytes | Extended fasts & deep hydration | Real Salt with 60+ trace minerals | Amazon |
| Santa Cruz Paleo Electrolyte Mango | Clean Electrolyte Powder | Clean ingredient hydration | Magnesium glycinate, no fillers | Amazon |
| LMNT Zero Sugar Variety Pack | High-Sodium Electrolytes | Keto & low-carb fasts | 1000 mg sodium per stick pack | Amazon |
| Clean Nutraceuticals Fruits & Veggies | Superfood Capsules | Micronutrient gap filler | 70+ superfoods + probiotics | Amazon |
In‑Depth Reviews
1. Ultima Replenisher Crave Killer Supplement and Electrolytes Powder – Tropical Fusion
This is the only product on the list that directly targets the fasting pain point: cravings. The proprietary addition of 100 mg Chromax (chromium picolinate) is clinically linked to appetite suppression and metabolic support, which customer reviews consistently confirm — users report feeling “set for the day” after a morning serving. The six-key electrolyte profile (magnesium, calcium, potassium, chloride, phosphorus, sodium) covers the full spectrum, not just sodium and potassium.
The Tropical Fusion flavor combines passionfruit and orange with stevia leaf extract, so there’s zero sugar, zero calories, and zero carbs — safe for ketosis and autophagy. Ginger root extract adds a digestive soother that helps during the empty-stomach window. The stickpack format is travel-friendly and dissolves cleanly in 16 ounces of water without grit.
What separates this from standard electrolyte mixes is the dual-action approach: it hydrates and simultaneously suppresses ghrelin. For anyone who struggles with the mental hunger spike around hour 18, drinking one of these before the tough window makes the difference between breaking and extending the fast. The 14-count box is lean enough to test before committing to a larger tub.
Why it’s great
- Clinical dose of Chromax for craving control
- Six-key electrolyte profile, not just Na/K
- Ginger root extract soothes empty stomach
- Zero sugar, calories, or carbs
Good to know
- 14-count box is small for daily users
- Tropical flavor may not appeal to everyone
2. REDMOND Re-Lyte Hydration Electrolyte Powder Mix, Variety Pack, 30 Stick Packs
REDMOND brings a fundamentally different philosophy to hydration by using their own unrefined Real Salt, mined in Utah, which naturally contains 60+ trace minerals. This complexity matters during prolonged fasts when micronutrient depletion accelerates. The 2:1 sodium-to-potassium ratio is scientifically grounded, and the inclusion of dual magnesium (both glycinate and another form) minimizes cramp risk without the laxative effect.
The variety pack covers multiple flavor profiles, and customer feedback emphasizes that the taste is not overly sweet — an important factor when your palate is sensitive during fasting. The addition of coconut water powder provides natural potassium and a subtle sweetness without added sugar. Each stick pack mixes into 16 to 32 ounces of water and dissolves cleanly with minimal clumping when poured slowly.
This is the best choice for extended fasts beyond 24 hours where trace mineral depletion becomes a real issue. The 30-count box provides a full month of daily servings. Users on keto and paleo diets report sustained energy without brain fog, and the clean ingredient list — stevia leaf extract, non-GMO citric acid, no artificial junk — aligns with strict clean-eating standards.
Why it’s great
- Real Salt delivers 60+ trace minerals
- Dual magnesium reduces cramp risk
- Coconut water powder adds natural potassium
- 30-count box is excellent value per serving
Good to know
- Flavor intensity varies between packs
- Mix requires slow pouring to avoid clumps
3. Santa Cruz Paleo Electrolyte Powder, Mango Flavor, Sugar Free Hydration Drink Mix
Santa Cruz Paleo focuses on ingredient purity above all else. The electrolyte blend uses Himalayan pink salt and sea salt for a broad mineral profile, but the standout is magnesium glycinate — the most bioavailable and gut-friendly form of magnesium. This eliminates the loose-stool risk that plagues cheaper magnesium oxide powders, making it safe for empty-stomach consumption.
The Mango flavor is naturally sweetened with stevia and delivers a juicy, tropical taste without any artificial aftertaste. Customers consistently mention that one scoop in a 40-ounce water bottle is sufficient for noticeable hydration and reduced post-workout soreness. The formula is free from added sugar, artificial sweeteners, magnesium stearate, sucralose, and aspartame — a truly clean label.
For fasters who prioritize ingredient sourcing and want a single-scoop solution that doesn’t cause digestive upset, this is the top contender. The 30-serving jar is economical despite the premium positioning, and the brand offers a wide range of flavors (Prickly Pear, Dragon Fruit, Lychee) to rotate through without getting bored.
Why it’s great
- Magnesium glycinate for high absorption, no GI distress
- Himalayan pink salt + sea salt for mineral depth
- No artificial sweeteners, fillers, or stearates
- Versatile flavor that mixes well in large bottles
Good to know
- Lacks chromium or appetite suppressant additives
- Jar format less convenient than stickpacks on the go
4. LMNT Zero Sugar Electrolytes – Variety Pack Bundle | Drink Mix | 18-Count
LMNT is the heavy hitter for sodium delivery — each stick pack provides 1000 mg sodium, 200 mg potassium, and 60 mg magnesium in a ratio that aligns with current research on optimal electrolyte repletion for active and fasted individuals. The high sodium content is deliberate; during fasting, renal sodium excretion increases, and this dose effectively prevents the headaches and dizziness that plague low-sodium fasts.
The variety pack includes multiple flavors, and customer feedback consistently praises the taste as “not too sweet” with no artificial aftertaste. Users report noticeable improvements in energy and hydration, with one reviewer noting it “cured constant thirst despite drinking water” during breastfeeding — a testament to the formula’s effectiveness for electrolyte depletion. The mix dissolves easily in still or sparkling water.
Where LMNT truly excels is for those on strict keto or low-carb fasts who need to maintain high sodium intake. The zero-sugar formulation and clean ingredient list make it safe for autophagy. However, the 18-count box is relatively small for the price point, and the salty-sweet taste profile may require dilution if you’re sensitive to high sodium concentrations.
Why it’s great
- 1000 mg sodium prevents fast-related headaches
- Science-backed 2:1 Na/K ratio
- Zero sugar, keto and autophagy safe
- Wide flavor variety with no aftertaste
Good to know
- 18-count box is low volume for daily fasters
- High sodium taste may require extra water dilution
5. Clean Nutraceuticals Fruits and Veggies Supplement Reds & Green Superfood Capsules
This is not an electrolyte powder — it’s a capsule-based superfood blend that fills the micronutrient gap that develops during prolonged fasts. With over 70 fruits and vegetables concentrated into 120 capsules, including spirulina, chlorella, prebiotics, and probiotics, this formula supports gut health and immune function when food intake is zero. The addition of digestive enzymes helps the body process any food consumed after the fast ends.
Customer reports highlight increased energy, improved skin clarity, reduced bloating, and better gut relief. Some reviewers note a strong vitamin smell, which is typical of concentrated superfood blends. The vegetable capsules are easy to swallow and provide a month’s supply, making this a set-and-forget addition to a fasting stack. The probiotics and prebiotics work synergistically to maintain gut flora balance during periods without food.
Use this as a companion to an electrolyte powder, not a replacement. Taking 4 capsules daily ensures you’re getting antioxidants, phytonutrients, and fiber precursors that keep your system running smoothly during extended fasts. It’s especially useful for those who worry about missing fruit and vegetable intake on fasting days.
Why it’s great
- 70+ superfoods in one capsule
- Probiotics + prebiotics for gut health during fasts
- Digestive enzymes aid post-fast meal processing
- 120 capsules provide a full month’s supply
Good to know
- Strong natural odor from concentrated greens
- Does not replace electrolyte needs during fasting
- Some users report mild cramping initially
FAQ
Will fasting supplements with stevia break my fast?
How much sodium do I actually need during a water fast?
Can I take superfood capsules during a fast without breaking autophagy?
Final Thoughts: The Verdict
For most users, the fasting supplements winner is the Ultima Replenisher Crave Killer because it directly addresses the number-one fasting failure point — cravings — with a clinically backed dose of Chromax, while delivering full-spectrum electrolytes. If you want deep trace mineral support for extended fasts beyond 24 hours, grab the REDMOND Re-Lyte Variety Pack. And for a purely clean-label electrolyte with premium magnesium glycinate, nothing beats the Santa Cruz Paleo Electrolyte Powder.