Yes, at film-scale doses. Retail electrolyte strips carry about 10 mg sodium and 15 mg potassium per strip, while a powder stick delivers 1,000 mg sodium. A strip is a light, portable, no-water electrolyte product, not a rehydration solution, and the label must say so. Feasibility sets the mineral load, taste work manages saltiness, and a 500-box pilot follows.
Strengths commonly seen on labels
| Strength | Where it is common | Source |
|---|---|---|
| 10 mg sodium + 15 mg potassium per strip | Sugar-free 30-count electrolyte strip; 1 strip per serving | source |
| Sodium + potassium + vitamin C + B12, 2-strip serving | Sports-positioned electrolyte strip taken with 8–12 oz of water; per-strip mineral amounts not shown on the page | source |
| 1,000 mg sodium, 200 mg potassium, 60 mg magnesium per stick (powder, for scale) | A leading electrolyte drink-mix packet; shows the 50- to 100-fold gap between powder and film doses | source |
| 75 mmol/L sodium, 20 mmol/L potassium (WHO ORS, for scale) | WHO/UNICEF reduced-osmolarity oral rehydration salts per liter; a medical benchmark a strip does not approach | source |
What fits in a film
An electrolyte strip is an exercise in honesty about scale. Published reviews describe an orodispersible film as weighing under 200 mg with the active typically 5 to 30 percent of the dry film, and one formulation group treated about 50 mg of active per film as a practical ceiling. Electrolytes are delivered as salts, so the elemental mineral is only part of the weight: 10 mg of sodium as sodium chloride is about 25 mg of salt, and potassium citrate or chloride carry similar overhead. Magnesium salts are bulkier still. That is why retail strips land at 10 mg sodium and 15 mg potassium, and why a strip cannot match a drink-mix stick at 1,000 mg sodium or a WHO rehydration solution at roughly 1,700 mg sodium per liter. Salts also taste salty, bitter, or metallic, and they pull moisture, so higher loads make a film that is unpleasant and unstable. The realistic product is a light electrolyte strip in the tens of milligrams, possibly with vitamin C or B12, positioned for convenience, travel, or a between-drinks top-up, and directed to be taken with water. Two-strip servings roughly double the numbers without changing the category. If a brief needs hundreds of milligrams of sodium, StripWorks will say a powder or tablet is the right format.
Electrolyte projects are quoted by feasibility because mineral salt selection, hygroscopicity, taste and film mass all affect loading. The default package is a high-barrier foil unit dose, stored at 20–25 °C and protected from humidity, with a 24-month shelf-life target confirmed by stability and a moisture or water-activity specification set per formula.
Formulation and taste for electrolyte films
Salt in a thin film is tasted immediately and fully; there is no water to dilute it. Sodium reads salty, potassium salts read bitter and metallic, and magnesium adds astringency. Flavor work uses citrus, berry, grape, and tropical directions with high-intensity sweeteners and a touch of acid to make saltiness read as refreshing rather than harsh. Mineral form matters: citrates and gluconates are milder than chlorides but heavier. Because salts are hygroscopic, the film's polymer and plasticizer balance is tuned to keep the strip dry and flexible. Sugar-free is expected in this category. Sensory criteria should score saltiness, metallic finish, and stickiness on the tongue.
Dose and format: strips, servings, and the water question
The per-strip mineral load and the directions are decided together. A single strip in the tens of milligrams suits a portable product; a two-strip serving with water is the common sports positioning. Directions should tell the user to drink water, because the strip supplies electrolytes, not fluid. Blends often add vitamin C or B12 in amounts that cost little load. Brands sometimes ask for zinc or magnesium on the label; small amounts are feasible, but every milligram of mineral competes with sodium and potassium. Format follows occasion: 20-count for gym bags and travel, 30-count for daily use.
Who buys electrolyte strips
Sports and endurance brands wanting a pocketable option next to their powders, travel and airline-retail brands, hangover and recovery brands, outdoor and heat-exposure workplaces, and wellness retailers adding a hydration SKU. Kids' hydration comes up and is handled with counsel involved. Most buyers understand the format is not a rehydration solution once the numbers are on the table; the brands that succeed sell convenience and taste, not milligrams.
Packaging and stability for electrolyte films
Hygroscopic salts make electrolyte strips more moisture-sensitive than most films, and the products are carried in hot gym bags and cars. Individual foil-laminate sachets with a strong moisture barrier are the default; a desiccant-backed carton is worth evaluating. The stability plan should track film weight, flexibility, and tack as well as mineral content, because a strip that turns tacky in a pocket is a failed product even if the assay passes. Lot coding, expiry, and the reorder specification are set during the pilot.
Regulatory and labeling notes
An electrolyte strip sold for general hydration support is a dietary supplement in the United States. FDA does not approve it before sale; the marketer is responsible for safety and labeling. Claims stay structure/function (supports hydration, helps replace electrolytes lost through sweat), carry the FDA disclaimer, and are notified within 30 days. What a strip cannot claim is medical rehydration: treating dehydration from illness, vomiting, or diarrhea, or standing in for an oral rehydration solution. Those are disease or medical-management claims, and products intended for the dietary management of a condition under physician supervision fall under FDA's medical-food definition, a different category with different requirements. Sodium and potassium must be declared in the Supplement Facts panel with daily value percentages. StripWorks does not give regulatory advice; counsel reviews the label before pilot.
Private label vs custom for electrolytes
Private label offers a tested sodium-and-potassium film at a market-standard load and flavor, your brand on the 20- or 30-count box. Custom is for a specific mineral ratio, added magnesium or zinc, vitamin C or B12, a signature flavor, or a sports-brand taste profile. Custom electrolyte work includes more film-handling development than a vitamin strip because of the salts' moisture behavior. Both paths go through the same feasibility review and pilot.
How the 500-box pilot applies
A qualified hydration project moves to a 500-box pilot once mineral load, flavor, and packaging are approved: about 10,000 strips in 20-count boxes or 15,000 in 30-count. For electrolyte strips the pilot is where the moisture barrier is proven under real handling, the take-with-water directions are tested on the carton, and market response confirms whether a light, portable electrolyte product finds its buyer before a larger run.
Common questions
A qualified 500-box pilot, roughly 10,000 strips in 20-count boxes or 15,000 in 30-count. Feasibility and samples come first.
Yes, development samples are part of a qualified project so you can approve taste, handling, and dissolve before the pilot.
Retail strips carry about 10 mg sodium and 15 mg potassium. Salts are bulky and hygroscopic, so loads stay in the tens of milligrams; a powder stick delivers 1,000 mg sodium.
No, and it should not claim to. A strip is a light, portable electrolyte top-up taken with water. Rehydration-solution claims are medical claims a supplement cannot make.
Yes, and almost all are. Flavor and high-intensity sweeteners do the work of making salt taste refreshing.
In small amounts. Magnesium salts are bulky and astringent, so every milligram competes with sodium and potassium in the same film.
No federal requirement applies. If the product is aimed at children, involve counsel early on dose, directions, and packaging.
High-barrier foil unit-dose sachets, 20–25 °C dry storage, a 24-month shelf-life target confirmed by stability, and a moisture or water-activity specification established for the formula.
Primary sources
- FDA, Structure/Function Claims
- FDA, Dietary Supplements (overview)
- FDA, Medical Foods Guidance Documents & Regulatory Information (medical food definition)
- WHO, The Treatment of Diarrhoea: reduced-osmolarity ORS composition
- Jacob S. et al., Orodispersible Films: Current Innovations and Emerging Trends, Pharmaceutics (2023)
- Visser J.C. et al., Orodispersible films as a personalized dosage form for nursing home residents, Int J Clin Pharm (2020)
- Solves Strips Electrolyte (10 mg sodium, 15 mg potassium per strip)
- enlyten electrolytes+ strips (2-strip serving with water)
- LMNT, electrolyte ratio per stick pack (powder comparison)