Table of Contents
1. Recognizing the Signs of Heat Stroke
Heat stroke is a prevalent issue, especially during peak summer heat. According to MSc. Dr. Do Quoc Phong from the Intensive Care and Toxicology Department at E Hospital, heat stroke occurs when individuals work or travel under direct sunlight for too long, particularly when the sun directly hits the back of the neck. Prolonged exposure to intense sunlight disrupts the body's thermoregulation system, causing heat imbalance and acute dehydration.
The symptoms of heat stroke vary depending on the degree of overheating and the duration of exposure. Early signs include increased heart rate, rapid breathing, and palpitations. As it worsens, symptoms can progress to fatigue, dizziness, weakness, headaches, difficulty breathing, and muscle cramps. In severe cases, heat stroke can cause fainting, coma, cardiac arrest, or even death.
Say nắng khiến cơ thể mệt mỏi, hoa mắt chóng mặt, nhức đầu
Health experts classify heat stroke as a severe heat-related injury. In some cases, body temperature can rise to 40°C (104°F) or higher. Without prompt cooling measures, prolonged heat stroke can cause severe damage to organs, particularly the nervous system, and may lead to fatal consequences.
2. What to Drink When Experiencing Heat Stroke?
Recognizing the early signs of heat stroke and replenishing lost fluids immediately is essential. But what are the best drinks to hydrate and cool down quickly? Here are six highly recommended beverages to restore your health after heat stroke.
2.1 Coconut Water
Coconut water is an excellent natural drink for hydration and rapid cooling. It is packed with essential minerals such as potassium, sodium, magnesium, calcium, copper, and zinc, which closely resemble the body's cellular fluids. The high potassium content in coconut water helps restore electrolyte balance, strengthen the immune system, and support circulatory and nervous functions.
Drinking fresh coconut water can quickly relieve symptoms of heat stroke, such as headaches, dizziness, and fatigue, while providing a refreshing and soothing effect. Consuming 1-2 glasses of fresh coconut water daily (without added sugar) is an effective way to stay hydrated and prevent heat-related illnesses.
Uống nước dừa tươi để giải nhiệt, phòng ngừa say nắng
2.2 Fresh Lemon Water
Fresh lemon water is a must-have drink when dealing with heat stroke. Rich in vitamin C, it enhances the immune system and protects the body from harmful free radicals. Additionally, lemons contain significant potassium levels, which help replenish lost minerals and restore electrolyte balance.
Nước chanh tươi giúp hạ nhiệt cơ thể và giải khát hiệu quả
Lemon water is also packed with citric acid, which reduces inflammation, improves blood circulation, and provides an instant energy boost. Simply squeeze fresh lemon juice into cooled boiled water, add a bit of sugar or salt if desired, and enjoy. This refreshing drink is especially beneficial for those working outdoors in hot conditions.
2.3 Nước ion kiềm i-on Life
Proper hydration is the key to preventing and recovering from heat stroke. For optimal results, choosing high-quality rehydration solutions like i-on Life alkaline ionized water is highly recommended.
Produced using advanced electrolysis technology from Japan’s OSG Group, i-on Life water contains smaller molecular clusters, allowing for rapid absorption into cells. This enhances detoxification and rehydration, helping to quickly alleviate symptoms like dehydration, headaches, and dizziness.
With a natural alkalinity (pH 8.5 – 9.5) similar to green vegetables, i-on Life water not only neutralizes excess acid but also helps the body regain balance, which is crucial during heat stroke.
Additionally, i-on Life water is rich in essential ionic minerals such as potassium, calcium, sodium, and magnesium (TDS ~180 mg/L), aiding in electrolyte replenishment, hydration, and overall endurance.
Nước ion kiềm i-on Life giúp bù nước, bù khoáng, giảm nhanh các triệu chứng say nắng
2.4 Kudzu Root Drink
Another natural remedy for heat stroke is kudzu root drink. Kudzu has long been recognized in traditional medicine for its cooling properties, making it an effective solution for overheating, constipation, dysentery, and skin conditions.
Kudzu contains isoflavones, which help regulate blood pressure and enhance blood circulation to the brain. Drinking kudzu root juice not only prevents heat stroke but also promotes cardiovascular stability.
Nước sắn dây là thức uống giúp giải nhiệt, làm dịu mát cơ thể hiệu quả
2.5 Sugarcane Juice
Sugarcane juice is a widely loved refreshing drink with natural sweetness. High in sugar content, it provides a quick energy boost, alleviates fatigue, and reduces dizziness caused by heat stroke. Additionally, it contains essential minerals that help rehydrate and restore electrolyte balance.
Beyond hydration, sugarcane juice is rich in phenolic and flavonoid compounds, powerful antioxidants that support immune function and reduce the risk of infections such as sore throats, colds, and bronchitis.
Uống nước mía để cân bằng điện giải, hỗ trợ phục hồi khi bị say nắng
2.6 Watermelon Juice
Watermelon juice is a perfect summer drink for cooling the body. It boasts a high water content and is rich in vitamins A, C, and B, along with essential minerals like iron, magnesium, and calcium.
Drinking watermelon juice helps rapidly replenish fluids, ease thirst, and lower body temperature. Additionally, it supports immune function, promotes diuresis, stabilizes blood pressure, and speeds up recovery from heat stroke. Regular consumption may also help prevent kidney stones, heart disease, and hypertension.
Nước ép dưa hấu giàu nước và khoáng chất giúp xoa dịu cơn khát tức thì
3. Preventive Measures Against Heat Stroke
On hot days, the best way to avoid heat stroke is to stay indoors in cool environments. However, if you must go outside, consider the following precautions:
3.1 Stay Hydrated
Drinking enough fluids is crucial to prevent dehydration. Aim for at least 1.5 liters of fluids per day, including water, fruit juices, and herbal teas. On extremely hot days, consider consuming electrolyte-rich beverages in addition to plain water.
If engaging in outdoor activities or exercising, implement hydration strategies:
- Two hours before exercise: Drink about 700 ml of water.
- Immediately before exercise: Consume an additional 250 ml.
- During exercise: Drink 250 ml every 20 minutes, even if you don’t feel thirsty.
It’s also important to avoid alcohol and caffeinated beverages, as they contribute to dehydration. Unless prescribed by a doctor, do not take salt tablets, which can disrupt the body’s natural fluid balance. Instead, opt for fruit juices or sports drinks to maintain hydration.
For individuals with kidney disease, epilepsy, or heart conditions, hydration must be managed carefully. Consult a doctor before adjusting daily fluid intake.
Nên bổ sung nước thường xuyên để phòng ngừa say nắng trong những ngày nóng bức
3.2 Use Sun Protection Measures
Avoid strenuous outdoor activities during peak heat hours. If possible, schedule outdoor tasks for the early morning or late afternoon when temperatures are lower. Keep indoor spaces cool by closing curtains and blocking direct sunlight during the hottest hours.
Nên che nắng kỹ càng cho cơ thể khi đi ngoài trời để hạn chế tình trạng say nắng
When stepping outside, wear light-colored, breathable clothing, wide-brimmed hats, and UV-protection sunglasses. Additionally, apply sunscreen (SPF 30+) to shield your skin from harmful UV rays.
Now that you know what to drink to combat heat stroke, you can make better hydration choices during hot weather. Heat stroke isn’t just uncomfortable—it can pose serious health risks if not addressed promptly. Proper hydration, particularly with i-on Life alkaline ionized water, helps cool the body, balance pH levels, and promote overall well-being.
Make sure to stay hydrated and protect yourself from extreme heat. i-on Life – the smart choice for daily hydration!

