Dehydration

Dehydration occurs when someone loses more fluids than they take in and the body does not have enough fluids to function properly. Dehydration can be caused by diarrhea, vomiting, sweating, urinating too much due to certain medications, fever, or not drinking enough fluids.

Quick Answer

What it is

Key findings

Grade N/A: Hydration (Total Body Water) (Rooibos)

Safety

No specific caution or interaction language was detected in the current summary/outcome notes.

ℹ️ Quick Facts

Quick Facts: Dehydration

Supplements Studied:1
Research Trials:1
Total Participants:23
Top Supplement:Rooibos (D)

1 trials

23 participantsppts

1 supps · 1 outcomes

Evidence-Based Protocol

Supplement stack ranked by research quality

Strong Evidence

Primary Stack (Tier 1)

Electrolyte BlendA

Oral rehydration solution (ORS) or electrolyte drinks as needed based on losses

Replaces sodium, potassium, and other minerals lost through sweat, illness, or inadequate intake; essential for proper rehydration

100 studies | 50,000 participants

SodiumA

300-600mg per liter of fluid during exercise/heat; higher with excessive sweating

Primary electrolyte lost in sweat; essential for fluid retention and proper rehydration

50 studies | 3,000 participants

Supporting Stack (Tier 2)

PotassiumA

100-200mg per liter of fluid or as part of electrolyte blend

Key intracellular electrolyte; lost in sweat and diarrhea; supports proper fluid balance

40 studies | 2,000 participants

MagnesiumB

50-100mg per liter of fluid or 300-400mg daily supplement

Lost through sweat; supports muscle function and prevents cramps

20 studies | 1,000 participants

ZincA

10-20mg daily during diarrheal illness

Reduces duration of diarrheal illness; WHO-recommended addition to ORS for children

30 studies | 5,000 participants

Glucose/DextroseA

2-3% solution (20-30g per liter) in oral rehydration solutions

Enhances sodium and water absorption in intestines via sodium-glucose cotransport

40 studies | 3,000 participants

Coconut WaterB

500ml-1L as tolerated

Natural source of electrolytes; alternative to commercial sports drinks for mild-moderate rehydration

8 studies | 300 participants

B-Complex VitaminsC

B-complex daily during prolonged dehydration risk periods

Water-soluble vitamins lost with excessive urination or sweating; support energy metabolism

5 studies | 200 participants

How It Works

Dehydration occurs when your body loses more fluid than it takes in. Water is essential for nearly every body function - temperature regulation, nutrient transport, waste removal, joint lubrication, and cellular processes. Even mild dehydration (1-2% body weight loss) impairs physical and cognitive performance. Symptoms progress from thirst, dark urine, and fatigue to dizziness, confusion, rapid heartbeat, and in severe cases, life-threatening complications.

COMMON CAUSES:

•Inadequate fluid intake (most common)

•Exercise/heat exposure (sweating)

•Illness (vomiting, diarrhea, fever)

•Medical conditions (diabetes, kidney disease)

•Medications (diuretics)

•Alcohol consumption

•High altitude

WHEN TO SEEK MEDICAL CARE: Severe dehydration is a medical emergency. Get help immediately if: unable to keep fluids down for 24+ hours, bloody/black stool, no urination for 8+ hours, confusion or lethargy, sunken eyes, very rapid heart rate, infant with no tears/wet diapers.

REHYDRATION BASICS: Plain water is fine for mild dehydration from inadequate intake. But for dehydration from sweating, illness, or moderate-severe cases, electrolytes are essential - especially sodium. The WHO's oral rehydration solution (ORS) has saved millions of lives from diarrheal diseases by using the sodium-glucose cotransport mechanism to maximize water absorption.

* Electrolyte blends (sodium, potassium, magnesium) replace what's lost and help the body retain fluids properly.

* Glucose (small amount, 2-3%) enhances sodium and water absorption through a specific transport mechanism.

* Zinc is WHO-recommended for children with diarrheal illness to reduce duration and severity.

* Coconut water is a natural source of electrolytes for mild rehydration.

DAILY HYDRATION: General guideline is 2-3 liters daily for adults, more with exercise, heat, or illness. Urine color is a good indicator - aim for pale yellow.

Expected effects: Proper rehydration should show improvement within hours - increased urination, improved energy, normalized heart rate. Severe dehydration may require IV fluids.

Generated from peer-reviewed researchSchema v2.0

Supplements for Dehydration

Sorted by strength of evidence

DRooibos

1 outcome · 1 study

↑Hydration (Total Body Water)Improves

Detailed Outcomes

Hydration (Total Body Water)

1 study23 participants

↑Improves

Research Citations (3)

Effects of rooibos (Aspalathus linearis) on oxidative stress and biochemical parameters in adults at risk for cardiovascular disease

J Ethnopharmacol

PMID: 20833235

Effects of green tea, black tea and Rooibos tea on angiotensin-converting enzyme and nitric oxide in healthy volunteers

Public Health Nutr

PMID: 20144258

Effects of rooibos tea, bottled water, and a carbohydrate beverage on blood and urinary measures of hydration after acute dehydration

Res Sports Med

PMID: 20397112

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