Our readers keep the lights on and my morning glass full of iced black tea. As an Amazon Associate, I earn from qualifying purchases.7 Best Supplements For Intermittent Fasting | Hydrate Clean

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Dr Ekberg’s euLyte is built for fasters who want more than just sodium and potassium. Each serving delivers 1513 mg of balanced electrolytes plus over 80 trace minerals, including manganese and zinc, which are rarely found in mainstream hydration powders. The lemon-lime flavor is light and dissolves completely without the gritty residue common in mineral-dense formulas, and the stevia sweetness is subtle enough to avoid any insulin-spiking concern during a prolonged fast.

The mineral breadth here is unmatched in this list — most competitors stop at four or five electrolytes, while euLyte pulls in a full spectrum that supports cellular function, nerve signaling, and muscle relaxation. Customer feedback consistently highlights that it outperforms Dr. Berg’s formula on taste and solubility, with users noting it helps extend fasts past the 20-hour mark without energy crashes. The canister yields 90 servings, which brings the per-dose cost well below many premium single-serve packets.

One practical drawback is the tall, narrow container — when the powder level drops low, reaching the last few scoops requires careful maneuvering. The price point sits at the premium end of the spectrum, but for fasters who prioritize comprehensive mineral support and clean ingredients, the cost per serving is competitive. This is the best option for anyone doing multi-day fasts or who has experienced electrolyte deficiency symptoms in the past.

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LMNT has earned a near-cult following in the fasting community for one reason: the sodium content. Each stick pack delivers 1000 mg of sodium alongside 200 mg of potassium and 60 mg of magnesium, a ratio that mirrors the electrolyte losses experienced during a fasted state far more accurately than most mainstream hydration mixes. The Watermelon Salt flavor leans savory rather than sweet, with a pronounced saltiness that signals genuine electrolyte density rather than flavored water.

The formula contains zero sugar, zero artificial sweeteners, and no stevia — just natural flavors and a precise electrolyte blend. This makes it one of the most fasting-compatible options on the market, as there is nothing in the ingredient deck that could trigger an insulin response. Users report that a single packet mixed into 32 ounces of water eliminates the headache and fatigue that typically set in around hour 14 of a fast, and athletes working in hot environments consistently rate it as essential for maintaining performance.

The trade-off is that the salty taste can be off-putting for those accustomed to sugary sports drinks. Some users dilute it further to reduce the salinity, but that also reduces the electrolyte concentration per serving. The 30-count box is priced in the mid-range, and while it is not the most economical choice for daily use, the clinical precision of the electrolyte ratio makes it the most effective tool for fasted hydration. If you struggle with fasting fatigue, this is the fix.

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Dr Berg’s formula stands apart by leading with potassium — a full 1000 mg per serving, which is roughly four times what most electrolyte mixes provide. This makes it the go-to choice for fasters who experience muscle cramps, heart palpitations, or fatigue that does not resolve with sodium alone. The sodium content is intentionally low at 40 mg, sourced from real pink Himalayan salt rather than table salt, which brings along a natural trace mineral profile.

The raspberry-lemon flavor is light and natural, sweetened with stevia and free of any artificial aftertaste. Users who have tried multiple electrolyte brands frequently note that this is the one that resolved chronic cramping and restored energy levels during extended fasts. The 100-serving canister delivers strong value, and the clean ingredient list — no sugar, carbs, gluten, or fillers — aligns perfectly with strict fasting protocols.

Because potassium levels are so high, it is important to start with a single scoop mixed into at least 16–32 ounces of water to avoid gastric discomfort. Some users report that the flavor is not as vibrant as sweeter competitors, and the powder takes about 5–10 minutes to fully dissolve. For fasters who prioritize potassium density over sodium, this is the most targeted tool available.

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ROUTINE Morning positions itself specifically for the first hours of a fasting day. The base combines organic lemon powder with organic apple cider vinegar powder and Himalayan sea salt, creating a tart, refreshing profile that mimics a homemade lemon-ACV tonic without the harsh acidity. Each stick pack dissolves easily and delivers a crisp, slightly sweet finish from monk fruit rather than stevia, which avoids the bitter aftertaste some fasters dislike.

The electrolyte profile is moderate — enough to rehydrate after sleep but not as aggressive as LMNT or euLyte. This makes it better suited as a morning fast-opener than a heavy post-workout replenisher. Users consistently report that it settles the stomach, curbs appetite, and provides a gentle energy lift without caffeine. The 30-stick box is priced in the mid-range, and the packaging is compact enough to toss in a gym bag or travel kit.

Some users find the stick pack material difficult to tear open, and the price per serving is higher than bulk canister options. If your fasting routine is built around a morning window and you appreciate the digestive benefits of apple cider vinegar, this is a well-formulated, pleasant-tasting way to start your fast. For heavy exercise sessions or long fasts, you will likely need a more concentrated electrolyte source later in the day.

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Perfect Keto takes a different approach by delivering exogenous ketones (goBHB salts) alongside electrolytes, making this a dual-action supplement for fasters who want to raise blood ketone levels while maintaining hydration. The strawberry lemonade flavor uses monk fruit for sweetness and is formulated to eliminate the bitterness that plagued earlier BHB powders. Each serving provides a meaningful dose of racemic beta-hydroxybutyrate that can help push your body into deeper ketosis and blunt hunger signals.

Users who have tested their ketone levels with a meter confirm that this product measurably increases circulating ketones within 30–60 minutes, which translates to sharper mental focus and sustained physical energy during the latter half of a fast. The added electrolyte blend supports hydration without competing with the BHB absorption. For fasters transitioning from a high-carb diet, this can reduce the severity of the keto-adaptation period significantly.

Taste is the most polarizing aspect — while many enjoy the strawberry lemonade, a minority find it hard to stomach and prefer mixing it into smoothies or using a different flavor. The price per serving sits in the mid-range, and the container provides about 15 servings, which is fewer than most electrolyte-only options. This is not a daily hydration staple; it is a targeted tool for fasters who specifically want ketone elevation and appetite suppression.

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ProMix Nutrition built this electrolyte packet around real watermelon flavor and monk fruit sweetness, skipping every artificial additive, stevia, and filler. The result is a clean, lightly sweet hydration packet that tastes genuinely fruity without being cloying. The electrolyte base uses Himalayan pink salt, magnesium malate, and potassium chloride, and the formula is third-party batch tested for purity — a rarity at this price tier.

The salted watermelon profile is polarizing in the best way: it leans savory and tangy rather than sugary, which makes it a refreshing alternative to the standard lemon-lime offerings. Reviews consistently praise its drinkability and the absence of fake sugar aftertaste. For fasters who hate stevia’s licorice-like finish, this is a welcome alternative. The 30-count box is budget-friendly and positions it as an accessible entry point for anyone new to fasting supplementation.

There have been isolated reports of plastic fragments found in the powder, which raises a red flag for quality control. While the majority of users have no issue, this inconsistency is worth noting. Additionally, the electrolyte profile is sodium-heavy with lower potassium and magnesium than competitors. It is a solid budget-friendly hydration option, but not the most complete electrolyte tool for serious fasters.

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Ultima Replenisher has been a staple in the clean hydration space for over eight years, and the Lemonade flavor remains one of the most popular choices for daily electrolyte maintenance. Each scoop delivers six key electrolytes — magnesium, calcium, potassium, chloride, phosphorus, and sodium — plus vitamin C and zinc, all sweetened with organic stevia leaf and infused with real fruit flavors. The 90-serving canister offers the lowest per-serving cost among the products reviewed here.

The lemonade flavor is bright and clean, with no bitter aftertaste, and the powder dissolves quickly in cold water with minimal stirring. It works equally well during a fast, after a workout, or as a replacement for sugary sports drinks throughout the day. Users who have tried multiple brands often return to Ultima for its consistent taste and reliable hydration support, and many note that it helps prevent leg cramps and general fatigue during active days.

The electrolyte density is moderate — it is not as concentrated as LMNT or Dr Berg, so heavy sweaters or long-distance fasters may need to adjust the serving size or combine with a more potent option. Some users report mild nausea if they consume multiple scoops too quickly. For daily hydration value, this is the most economical choice, but for intense fasted training sessions, you may want a higher-sodium alternative later in the day.