Direct answer
For a generally healthy adult eating normally without substantial fluid loss, water and regular meals are the starting point. A daily electrolyte powder is not an independently established requirement. Prolonged heavy sweating creates a different replacement problem; vomiting or diarrhea creates another. Medical oral rehydration solution, or ORS, is a defined treatment formulation and should not be equated with every drink labelled “electrolytes.” E1, E2, E3, E4
The practical question is what has been lost, what the person is doing, and what is actually in the drink. Neither the highest sodium number nor a “sugar-free” label identifies a universal best option.
Confidence: high in these distinctions and the need to avoid overdrinking; moderate in situation-specific replacement guidance; insufficient independent evidence for a premium electrolyte product improving long-term health in an already adequately hydrated general population. These are editorial judgments, not a new formal GRADE assessment.
Key takeaways
- Electrolytes are essential nutrients. That does not establish a need for an additional branded daily serving
- Sustained sweating, access to meals, heat exposure and medical conditions matter more than the product category name
- An exercise drink, a zero-sugar mineral mix and an ORS can have materially different purposes and compositions
- Extra sodium cannot make unlimited drinking safe. Low blood sodium can arise when fluid intake exceeds what the body can clear
- Ingredient quantities, correct dilution, medicines and total dietary intake deserve attention before claims about “optimal hydration”
Table of contents
- What electrolytes are
- Which situation are we talking about
- Forms and label comparisons
- Evidence and funding summary
- Everyday hydration
- Exercise and heat
- Vomiting diarrhea and medical ORS
- Claims that need a closer look
- Risks interactions and clinical advice
- Study amounts are not personal doses
- Money countries and backers
- Source credibility scorecard
- Regulatory context
- FAQ
- Sources and update record
What electrolytes are
Electrolytes are charged substances in body fluids. Sodium, potassium, chloride, magnesium, calcium, phosphate and bicarbonate help regulate fluid balance, nerve and muscle function, and other processes. Foods and ordinary drinks supply them. An electrolyte imbalance can mean too little or too much; it is not synonymous with needing more salt. E1
An electrolyte powder may combine sodium chloride or citrate, potassium salts, magnesium salts, carbohydrate, sweeteners, vitamins and other ingredients. The word “electrolytes” does not specify the proportions, total dose, concentration after mixing or evidence for that exact formulation.
Which situation are we talking about
| Situation | Evidence-based starting point | What should not be inferred |
|---|---|---|
| Ordinary day with normal meals and no unusual losses | Water and food; additional minerals depend on an identified need E1, E2 | Everyone needs a daily packet |
| Brief or modest activity | Assess conditions and actual sweating rather than automatically adding a supplement E2 | Every workout requires sports nutrition |
| Several hours of heavy sweating or demanding heat exposure | Planned access to fluid, cooling, breaks and appropriate replacement; occupational or sports advice should fit the person E2, E3 | A drink can compensate for unsafe heat exposure |
| Diarrhea or vomiting with meaningful fluid losses | Medical assessment when indicated; an appropriate ORS has a specific role E4, E5 | A “hydration” drink is automatically an ORS |
| Diagnosed electrolyte disorder, kidney/heart disease or prescribed restrictions | Clinician-directed management E1, E6 | Trial doses or package marketing override the care plan |
The rows are contexts, not an algorithm for diagnosing yourself. Symptoms alone may not reveal which fluid or electrolyte problem is present.
Forms and label comparisons
| Form | What to check | Main limitation |
|---|---|---|
| Water plus meals | Reliable access to water and adequate food | May not meet unusually large ongoing losses without planning |
| Ready-to-drink sports beverage | Sodium, carbohydrate, bottle size and intended use | Carbohydrate and electrolyte effects are difficult to separate in many comparisons |
| Powder, tablet or drops | Milligrams of each mineral per serving and the specified mixing volume | Concentration changes when the same serving is mixed into less water |
| Zero-sugar electrolyte mix | Sodium/potassium amounts, sweeteners, other ingredients | Sugar-free does not establish a clinical advantage or equivalence to glucose-based ORS |
| Packaged medical ORS | Intended indication, full formulation and exact dilution instructions | Requires correct preparation; severe dehydration may need care beyond oral fluids |
| Mineral water, coconut water or other ordinary beverages | The actual product's nutrient label | Category names do not guarantee the composition of a studied replacement solution |
Sodium and salt are different quantities. Table salt is sodium chloride. One gram of sodium is approximately 2.54 grams of sodium chloride, calculated from their molecular weights. A label listing 1,000 mg sodium should not be read as 1,000 mg salt. The FDA's sodium Daily Value is less than 2,300 mg for the general adult dietary context; it is neither a replacement target nor a personalised limit for prolonged exertion. E7
For fair comparisons, use both the amount per serving and the amount per prepared litre. A hypothetical 500 mg sodium serving in 500 mL gives 1,000 mg/L; in 1 L, it gives 500 mg/L. This is label arithmetic, not a recommended concentration.
Evidence and funding summary
| Question or study | Finding relevant to this article | Funding and limitation | Editorial interpretation |
|---|---|---|---|
| Ordinary versus prolonged occupational sweating | NIOSH distinguishes water for shorter moderate heat exposure from electrolyte-containing drinks for several hours of sweating E2 | US government guidance; not a trial proving a retail brand | Context-specific guidance; no universal daily-powder claim |
| Low-osmolarity ORS for childhood diarrhea/dehydration | WHO recommends it for children up to 10 years with acute watery diarrhea and dehydration; strong recommendation, moderate certainty E5 | USAID-funded guideline; not an industry-only-excluded reanalysis of every included trial E5a | Established clinical role, kept separate from everyday supplementation |
| CHOICE 2001, 675 children aged 1–24 months | Reduced-osmolarity ORS reduced unscheduled IV therapy relative to the older WHO formula; no apparent difference in stool output or illness duration E8 | WHO, UNICEF and Harvard child-health project grants reported by the conducting institution; full product-procurement chain not verified E8a | Relevant primary clinical evidence, but not certified conflict-free or a sports-drink comparison |
| Cosgrove and Black 2013, nine cyclists | No significant performance difference in a roughly three-hour cool-weather crossover trial E9 | University of Otago funding; no declared conflicts; capsule/food purchase-versus-donation terms unreported | Small, context-limited result; not proof sodium never helps in heat |
| Del Coso et al., half-Ironman trial | A positive performance result is frequently cited E10 | SaltStick España supplied the capsules; no financial support was reported, but purchase/payment terms were not stated | Excluded from the independent efficacy verdict |
| Millard-Stafford et al. 2021, beverage hydration index | Nineteen healthy young adults; short-term urine/fluid-retention outcomes over four hours E11 | Coca-Cola grant; lead author disclosed company consulting | Excluded from independent efficacy verdict; useful example of a surrogate endpoint |
| WASSUP 2021, ultramarathon observation | Supplemental sodium was not significantly associated with performance E12 | RacingThePlanet travel grant and Abbott equipment loan; observational and incomplete intake data | Commercially supported context, not independent proof of no benefit |
| Almond et al. 2005, Boston Marathon cohort | Weight gain was associated with low blood sodium after the race E13 | NIH plus Burnes Family and Kobren funds; private-fund chains not fully traced | Observational safety signal; not a randomised comparison or general-population prevalence |
This targeted review does not calculate a pooled independent-only effect size. Public guidance, human trials, observational evidence and laboratory endpoints answer different questions. The absence of eligible independent evidence for a claim is not proof that the claim is false.
Everyday hydration
Ordinary hydration is not the same task as replacing losses during a long race or treating gastroenteritis. Regular meals already contribute minerals, while food and drinks contribute water. NIOSH's hydration material notes that water with regular meals will usually maintain water and electrolyte balance even during work in heat. That is a useful baseline, with important exceptions for sustained heavy losses and individual medical needs. E14
A product may be convenient or pleasant without being necessary. This review did not establish that taking a daily mineral mix, in an already adequately hydrated and adequately nourished adult, improves important long-term outcomes. Claims about more energy, better concentration, skin appearance or “detoxification” need trials measuring those outcomes in the intended population, rather than an explanation that minerals are physiologically important.
Do not use this conclusion to dismiss persistent thirst, fatigue, dizziness or weakness. An article cannot determine whether these reflect heat, illness, medication effects, an electrolyte disorder or something else. E1
Exercise and heat
Replacement and performance are separate questions
Sweating creates fluid and salt losses. Replacing losses and proving that extra sodium improves race performance are not interchangeable. A performance trial must control for training, carbohydrate intake, fluid intake, weather and the amount of sodium already obtained from food and drinks.
The nine-cyclist Otago trial illustrates a narrow result: similar completion times in cool conditions. Its methods specify 700 mg sodium chloride per hour, approximately 275 mg sodium, not 700 mg sodium. It cannot settle requirements for an acclimatised worker or athlete sweating heavily in much hotter conditions. Procurement terms remained unverified, so this study is contextual rather than a completely verified independent foundation. E9
What current heat guidance actually covers
NIOSH's July 2026 workplace guidance recommends accessible water, gradual acclimatisation and rest breaks, with balanced-electrolyte sports drinks when sweating continues for several hours. Its drinking schedules are workplace protocols, not daily targets for sedentary readers. E2
Abu Dhabi's Safety in the Heat, version 4.0, July 2024 similarly ties replacement to work rate, conditions, meals and heavy sweating between meals. It discourages salt tablets and distinguishes low-sugar industrial replacement drinks from prolonged sports-drink consumption. This is Abu Dhabi occupational guidance, not a Dubai-wide prescription for residents to add salt every day. E3
The broader UAE dietary message also matters: MoHAP's 2025 salt-awareness guidance encourages reducing excessive salt intake. There is no contradiction once routine diet and exceptional occupational losses are kept separate. E15
More fluid is not always safer
The Boston Marathon study found post-race hyponatremia in 13% of the 488 runners who supplied usable finish-line blood samples; substantial weight gain was a major associated factor. This selected endurance cohort does not estimate risk during ordinary daily life. E13
NIOSH also warns against excessive fluid intake. Electrolytes are not permission to force large volumes. People undertaking long events or prolonged work in heat need a plan suited to the conditions, access to water and food, and their health; neither a fixed internet rule nor a slogan about “never being thirsty” is a complete plan. E2, E14
Vomiting diarrhea and medical ORS
An ORS combines glucose and specific salts at defined concentrations to support fluid replacement during illness. Correct preparation is part of the treatment. WHO's production guidance is a pharmaceutical-quality formulation document; its existence does not certify every commercial electrolyte beverage. E16
The 2024 WHO guideline's strong recommendation for low-osmolarity ORS in children up to 10 years with acute watery diarrhea and dehydration carries moderate, not high, evidence certainty. Its extension to children aged 5–10 includes extrapolation: the guideline notes the absence of direct published trials in that older subgroup. This is an example of an important treatment recommendation whose rationale and certainty still deserve careful reporting. E5
The older CHOICE randomised trial compared two ORS formulations in ill young children. Unscheduled IV therapy was needed in 10% versus 15% with the lower-osmolarity and older formulas, respectively: about 5 percentage points lower, or a 33% relative reduction (reported odds ratio 0.6; 95% confidence interval 0.4–1.0). This did not test healthy adults taking a daily supplement. E8
CDC's March 2026 travel guidance recommends packaged ORS for severe fluid loss, mixed with the packet's stated volume of safe water. Mild diarrhea in an otherwise healthy adult may be managed with preferred fluids, including sports drinks; overly sweet drinks can worsen osmotic diarrhea when consumed in quantity. This distinction prevents both extremes: calling all sports drinks useless during illness, or calling them equivalent to ORS. E4
Preparation matters: packet sizes vary, so do not assume every sachet is for one litre. Use the specified safe-water volume and avoid improvising extra salt, sugar or powder. UNICEF's current procurement information lists multiple sachet sizes. Ready-to-drink ORS has its own directions. E17
Young children, frail older adults, people with significant chronic illness, and anyone unable to keep fluids down need a lower threshold for medical advice. Severe dehydration and shock are outside a self-directed supplement comparison. E4, E16
Claims that need a closer look
“Hydrates better than water”
Ask what was measured. A beverage hydration index tracks urine output relative to water over a short period under controlled conditions. That is not a direct measure of fewer hospitalisations, better daily concentration or long-term health. The Coca-Cola-funded 2021 trial was conducted in healthy young adults at rest; we do not use its outcome claims as independent evidence. A surrogate can be useful without proving a general need for the product. E11
“Sugar-free is always better”
Sugar has different roles in different products. Glucose is a functional part of conventional medical ORS. That does not make high-sugar drinks universally desirable or prove that every sugar-containing sports beverage matches ORS. Judge the intended use and formulation, rather than applying a single marketing preference to all contexts. E4, E16
“Cramps prove you need more electrolytes”
Cramps alone do not identify a specific mineral deficiency. For heat-associated cramps, CDC advises stopping activity, cooling down and appropriate fluids, with medical attention for persistent cramps or relevant heart/salt-restriction concerns. This is first-aid guidance, not proof that a particular powder prevents every exercise cramp. E18
“Natural salt makes it safer”
A sea-salt or mineral-origin story does not replace the sodium quantity, contaminant testing, correct dilution or an interaction review. Likewise, more ingredients are not automatically an improvement. “Electrolyte complex” should be unpacked into the actual amounts and purposes of its components.
Risks interactions and clinical advice
| Situation or medicine | Why it matters | Practical boundary |
|---|---|---|
| Kidney disease or impaired potassium excretion | Added potassium can accumulate; severe hyperkalemia can affect heart rhythm E6 | Discuss the complete formula with the treating clinician |
| ACE inhibitors, ARBs or potassium-sparing diuretics | These can reduce potassium excretion E6 | Do not assume a potassium-containing hydration mix is harmless |
| Loop or thiazide diuretics | Potassium losses may rise; individual monitoring determines replacement E6 | Avoid correcting a suspected low level by guesswork |
| Kidney impairment and magnesium-rich products | Magnesium clearance may be reduced; excess supplemental magnesium can also cause diarrhea E19 | Count overlapping supplements and medicines |
| Tetracycline/quinolone antibiotics or oral bisphosphonates | Magnesium can reduce medicine absorption E19 | Ask a pharmacist about that medicine's spacing instructions |
| Heart failure, high blood pressure or prescribed salt/fluid restrictions | General hydration marketing does not account for the treatment plan E1, E7 | Do not override prescribed restrictions |
| Diabetes or sugar restrictions during heavy work | Carbohydrate content and the illness/work context require consideration E3 | Seek individual advice on a replacement product |
Emergency signs: confusion, seizure, collapse or reduced consciousness during heat exposure require urgent action. For suspected heat stroke, call emergency services, start cooling, and do not give drinks. Do not delay to try another powder. Separately, never give anything by mouth to a person who is not fully alert and able to swallow safely. E18
This is not a complete interaction list. Bring the actual label, serving frequency and other supplements to a clinician or pharmacist. “Low sodium” can still mean substantial potassium, and “zero sugar” says nothing about either mineral.
Study amounts are not personal doses
| Number encountered | Correct interpretation |
|---|---|
| Milligrams sodium per serving | One part of total dietary sodium; not the weight of salt |
| Milligrams per litre | Concentration after dilution, not necessarily the amount consumed |
| Sodium chloride used in a trial | Convert before comparing with sodium-labelled products; the Otago study is a concrete example E9 |
| A workplace drinking schedule | Applies to its specified work and heat conditions; requires appropriate supervision E2, E3 |
| An ORS packet | Follow that packet's dilution and use instructions; sachet sizes differ E17 |
For ordinary purchasing decisions, compare the full label and intended purpose before cost per serving. This article does not nominate a universal dose, a best brand, a salt-loading protocol or a homemade ORS recipe.
Money countries and backers
The commercial incentive is straightforward: a daily-use habit can sell more servings than a narrowly indicated replacement product. That is an analysis of incentives, not evidence that a company's product is ineffective or that its researchers acted improperly.
Two documented examples show the ownership structure. Liquid I.V. is based in Los Angeles, US, and was acquired by Unilever in 2020; Unilever's global headquarters is in London, UK. Gatorade belongs to PepsiCo, based in Purchase, New York, US. These corporate sources establish ownership and commercial positioning only, not clinical efficacy. Manufacturing origin must be checked for the particular SKU and batch; headquarters does not establish it. E20, E21, E22, E23
The evidence has its own money trail. SaltStick España supplied the capsules for the positive half-Ironman trial; Coca-Cola funded the 2021 beverage-index study; WASSUP received event-organiser support and an Abbott equipment loan. No claim of misconduct follows from those facts. The verified commercial support or unresolved supply terms prevent us from certifying these studies as commercially independent. E10, E11, E12
WHO's funding comes from member-state assessments and voluntary contributions, including governments, foundations and private-sector sources. The specific 2024 diarrhea guideline acknowledges USAID funding and reports that the funder's views did not influence its recommendations. WHO is an intergovernmental organisation headquartered in Geneva, Switzerland; UNICEF's global headquarters is in New York, US, with its Supply Division in Copenhagen, Denmark. Procurement organisations have an access-and-delivery mandate and their own institutional incentives; neither a UN name nor a university affiliation substitutes for a study-level disclosure check. E5a, E17, E24, E25
Text version of the funding map: Unilever owns Liquid I.V.; PepsiCo owns Gatorade. Coca-Cola funded Millard-Stafford 2021. SaltStick España supplied Del Coso's trial capsules. RacingThePlanet provided WASSUP travel support and Abbott loaned equipment. USAID funded the 2024 WHO guideline. These are selected verified relationships, not an ownership census or an allegation of influence over results.
Source credibility scorecard
Tier measures financial proximity, not whether a result is true. Tier 1 means no identified commercial stake after the checks described; Tier 2 means indirect ties; Tier 3 means an interested party; Tier 4 means maker/seller support. “Unresolved” is not a clean bill of independence. A–D describes the source's suitability for the claim used here, with the reason stated.
| Source group | Country and funding model | Tier / credibility | Accuracy incentive and remaining limitation |
|---|---|---|---|
| MedlinePlus, NIH ODS E1, E6, E19 | US federal health information | 1 / A for stated physiology and safety | Public accountability and cited literature; not a fresh independent-only review of every trial |
| CDC/NIOSH and CDC Yellow Book E2, E4, E14, E18 | US federal public-health guidance | 1 / A for attributed guidance | Prevention mandate; workplace/travel populations and evidence ages limit extrapolation |
| WHO guideline and production specification E5, E5a, E16 | Switzerland HQ; intergovernmental; specific 2024 work USAID-funded | 2 / B, cautiously classified | Explicit methods and global accountability; donor/program priorities, panel ties and underlying studies require scrutiny |
| ADPHC and MoHAP E3, E15 | UAE public-health authorities | 1 / B for local guidance | Jurisdiction-specific accountability; occupational advice is not a universal clinical trial |
| FDA E7, E26 | US federal regulator | 1 / A for US label/regulatory statements | Statutory accountability; statements do not certify a batch or establish clinical superiority |
| CHOICE and conducting-institution report E8, E8a | Multicountry clinical trial; public/intergovernmental and Harvard-project grants | Unresolved / B | Randomised clinical outcomes; trial-era product supply and complete funding chain not confirmed |
| Cosgrove and Black E9 | New Zealand; University of Otago funding | Unresolved / B | Blinded crossover and disclosed academic support; only nine cyclists, cool conditions, procurement unknown |
| Del Coso et al. E10 | Spain; capsules supplied by SaltStick España; payment terms unstated | Unresolved / B | Controlled human study; supplier acknowledgment does not establish a purchase or a free donation; held outside verified independent efficacy use |
| Millard-Stafford et al. E11 | US; Coca-Cola funding and consulting relationship | 4 / D for efficacy; B for disclosed methods | Transparent disclosures; small short-term surrogate study, not proof of daily clinical benefit |
| WASSUP E12 | US-led; event grant and Abbott equipment loan | 3 / C for contextual description | Open methods; commercial support, missing data and observational confounding |
| Almond et al. E13 | US; NIH plus two private funds | Unresolved / B | Clinically measured cohort; fund chains untraced, selection and self-report limitations |
| UNICEF E17, E25 | US HQ / Denmark Supply Division; government and private voluntary support | 2 / B for procurement facts | Competitive procurement and public reporting; also advocates uptake of products it procures |
| Unilever and PepsiCo E20–E23 | UK and US; commercial sales/shareholders | 4 / C for ownership, D for promotional outcome claims | Company is accountable for its corporate records; sells the relevant brands |
| WHO funding disclosure E24 | Switzerland; organisational self-report | 2 / B | Primary account of financing; not an external audit |
The evidence is geographically concentrated in US institutions, with UAE guidance, New Zealand and Spanish exercise studies, and a multicountry childhood-diarrhea trial. No Dubai-specific randomised efficacy trial was used. Absence of disclosed manufacturer involvement is not proof that every source is free of all financial or intellectual interests.
Regulatory context
In the US, an electrolyte product may be sold as a conventional beverage or a dietary supplement depending on how it is represented and labelled. FDA does not pre-approve dietary supplements for efficacy or routinely test every product before sale. “FDA registered” is therefore not evidence that an electrolyte supplement was clinically approved. E26
This article has not verified UAE registration, permitted claims or batch quality for any named product. Purchase-channel legality and registration should be checked separately from scientific efficacy. The UAE references here are public-health guidance, not certification of a retail formulation.
FAQ
Should I take electrolytes every morning?
A routine morning habit is not an established requirement for an adequately nourished, generally healthy adult without unusual losses. An identified medical need or sustained heavy sweating changes the question. Review the purpose before choosing a packet.
Are electrolyte drinks the same as ORS?
No. ORS has a defined medical purpose and formulation. The word “electrolytes” alone does not establish equivalence, and correct dilution matters. E16, E17
Does living in Dubai mean I need extra sodium every day?
Location alone is insufficient. Time outdoors, work intensity, sweating, acclimatisation, meals, medicines and health conditions matter. Abu Dhabi's occupational recommendations should not be turned into universal advice for all UAE residents. E3
Can I drink as much as I want if it contains sodium?
No. Extra electrolytes do not remove the risk from excessive fluid consumption. Concerning symptoms after prolonged exercise or heat exposure need assessment rather than an automatic instruction to drink more. E2, E13
What about magnesium for sleep or cramps?
That is a different evidence question from fluid replacement. See our magnesium review for the ingredient-specific analysis. The total amount across hydration products, supplements and medicines still matters.
Is a more expensive product better?
This review does not establish a price-to-efficacy relationship or rank brands. An appropriate, clearly labelled formulation and credible batch-specific quality information are more relevant than a premium positioning claim.
Sources and update record
Research checked: 1 October 2026. This is a publication draft; no independent clinical sign-off is claimed. The search was targeted, not a registered systematic review. Manufacturer-supported outcomes were excluded from the independent efficacy verdict, including donated ingredients and equipment support. Public guidance is identified as guidance. No animal or in-vitro result was used to establish a human clinical benefit. Some original pages could be verified only through indexed source text; these access limits are recorded below.
Full source details and funding/procurement gaps follow. Ownership and source-country facts describe documented entities, not product manufacturing provenance.
E1. MedlinePlus. Fluid and Electrolyte Balance. Updated 16 May 2024. US National Library of Medicine. Primary institutional health information; not a product trial.
E2. CDC/NIOSH. Workplace Recommendations. Updated 16 July 2026. US federal occupational guidance. Work conditions and duration matter; not a retail-product endorsement.
E3. Abu Dhabi Public Health Centre. Safety in the Heat. Technical Guideline v4.0, 15 July 2024, section 5.6. UAE public authority. Occupational guidance, not Dubai-wide everyday supplementation advice. Current listing verified.
E4. CDC Yellow Book. Travelers’ Diarrhea. Updated 24 March 2026. US federal clinical/travel guidance. ORS versus mild-illness fluid distinctions are attributed to this source.
E5. WHO. Guideline on management of pneumonia and diarrhoea in children up to 10 years of age. 2024; evidence and recommendations. Official WHO text mirrored by NLM. The specific recommendation and older-child extrapolation were verified in indexed official text; direct full-book/PDF access was blocked. Guideline funding is not proof all underlying trials are independent.
E5a. WHO guideline acknowledgements, 2024. USAID funding and the stated non-influence of funder views were verified in indexed official acknowledgements; direct full-book access was blocked. Full historical donor and panel chains were not exhaustively audited.
E6. NIH Office of Dietary Supplements. Potassium: Health Professional Fact Sheet. US government evidence summary; used for potassium handling and medicine/renal cautions, not a general electrolyte-product benefit.
E7. FDA. Sodium in Your Diet. US regulator. General-population dietary-label context; not an exercise replacement dose.
E8. CHOICE Study Group. Multicenter randomized double-blind trial of reduced-osmolarity ORS. Pediatrics. 2001;107:613–618. DOI 10.1542/peds.107.4.613. 675 children aged 1–24 months in five countries; comparison with the older WHO ORS. Funding corroborated separately; full procurement chain unresolved. Abstract verified, publisher full text inaccessible in this review.
E8a. Johns Hopkins Bloomberg School of Public Health. New Oral Rehydration Solution is More Effective for Treating Children with Diarrhea. 2001. Conducting institution reports WHO, UNICEF and Harvard Institute for International Development Applied Research on Child Health Project grants. Institutional publicity source used for funding provenance, not as sole clinical evidence.
E9. Cosgrove SD, Black KE. Sodium supplementation has no effect on endurance performance during a cycling time-trial in cool conditions. JISSN. 2013;10:30. University of Otago funded; no competing interests declared. Methods give 700 mg NaCl/h, not 700 mg sodium/h. No purchase/donation statement for study materials identified; contextual, not confirmed fully independent.
E10. Del Coso J et al. Effects of oral salt supplementation on physical performance during a half-Ironman. Scand J Med Sci Sports. 2016;26:156–164. 26 participants. The full-paper funding statement reports no financial support and says SaltStick España supplied capsules; purchase/payment terms are unstated. Held outside the verified independent efficacy verdict pending clarification. Full paper checked at https://limericktriathlon.com/wp-content/uploads/2015/07/SaltSupplementationStudy.pdf
E11. Millard-Stafford M et al. The Beverage Hydration Index: Influence of Electrolytes, Carbohydrate and Protein. Nutrients. 2021;13:2933. Coca-Cola grant AWD000506; lead author disclosed company consulting. Sponsor reportedly had no role in execution or interpretation. Industry funding still excludes independent efficacy use. Indexed full text also verified at https://pmc.ncbi.nlm.nih.gov/articles/PMC8465972/
E12. Lipman GS et al. WASSUP: sodium supplements and ultramarathon performance. Sports Medicine - Open. 2021;7:13. RacingThePlanet 2017/2018 research travel stipend; Abbott materials loaned and returned. Authors declared no competing interests. These stated grants/loans still fail the strict no-commercial-support screen.
E13. Almond CSD et al. Hyponatremia among Runners in the Boston Marathon. NEJM. 2005;352:1550–1556. NIH RR-02172, Burnes Family Fund and Kobren Fund. Private-fund source chains not fully traced. 488 of 766 enrolled supplied usable finish-line samples; observational, not general-population prevalence.
E14. CDC/NIOSH. Heat Stress: Hydration, publication 2017-126, in Keeping Cool fact sheets. US federal guidance, PDF pages 7–8. Food/water baseline, prolonged sweating exception and excessive-fluid caution.
E15. UAE Ministry of Health and Prevention. World Salt Awareness Week 2025. UAE public-health source. Used to distinguish general dietary salt reduction from occupational sweat replacement.
E16. WHO and UNICEF. Oral Rehydration Salts: Production of the new ORS. 2006. Official manufacturing/formulation guidance. Does not validate a retail product merely using the word electrolytes; document-specific production-guidance funding not fully traced.
E17. UNICEF Supply Division. Market update: Oral rehydration salts and zinc. Updated 6 July 2026. Primary procurement source. Multiple sachet volumes, competitive manufacturer tenders, quality and access challenges. Procurement/advocacy role disclosed.
E18. CDC. Heat-Related Illnesses: What to Look For and What to Do. Federal first-aid information. Used for urgent symptoms and oral-intake limits, not for diagnosis.
E19. NIH Office of Dietary Supplements. Magnesium: Health Professional Fact Sheet. Updated 6 January 2026. Federal information source; renal toxicity, diarrhea and drug-binding interactions. Not an endorsement of a mixed hydration formula.
E20. Unilever. Liquid I.V. brand profile. Primary seller disclosure for 2020 acquisition, US brand base and product positioning only.
E21. Unilever. Press and media. Official page identifies global headquarters at 100 Victoria Embankment, London, UK. No clinical claims taken from it.
E22. PepsiCo. How Gatorade started sports hydration. 28 July 2026. Company source for Gatorade ownership and everyday-market positioning. Promotional efficacy narrative not adopted.
E23. PepsiCo. Corporate governance and board contact. Company source for Purchase, New York corporate location. No ownership percentage inferred.
E24. WHO. How WHO is funded; headquarters contact. Assessed and voluntary contributions, including private sources. Official headquarters verification: https://www.who.int/about/contact-us
E25. UNICEF. Funding Compendium 2024; locations. Institutional public/private funding disclosure. Global HQ and Supply Division contacts: https://www.unicef.org/media/contact-us ; 2025 supply annual report: https://www.unicef.org/supply/media/25326/file/UNICEF-Supply-Annual-Report-2025.pdf
E26. FDA. Questions and Answers on Dietary Supplements. Primary regulator source for US classification, premarket-approval limits and label responsibilities. No UAE legal equivalence assumed.
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