Singapore sits one degree north of the equator, and most of us lose more fluid on an ordinary Tuesday than people in temperate countries lose at the gym. The sweat you wipe off on the walk from the MRT is not just water. It carries sodium, potassium and magnesium with it, and that is why plain water sometimes leaves you feeling flat even after two bottles. This guide explains what electrolytes actually do, which drinks sold in Singapore genuinely replace them, and how to tell a real rehydration drink from a sugar drink with a sporty label.
What electrolytes are, in one paragraph
Electrolytes are minerals that carry an electric charge when dissolved in your body’s fluids. The ones that matter for hydration are sodium, potassium, magnesium, calcium and chloride. They control how much water stays inside your cells versus outside them, they let your nerves fire and your muscles contract, and they keep your heart rhythm steady. When you sweat heavily, you lose sodium first and most, then potassium. Drink only water to replace it and you dilute what is left, which is why a long run or a hot afternoon of errands can end in a headache, cramps or that foggy, slightly nauseous feeling.
Do you actually need an electrolyte drink?
Most of the time, no. If you are sitting in an air-conditioned office and eating normal meals, your food supplies more than enough sodium and potassium, and water is the right drink. Electrolyte replacement earns its place in four situations that are common here:
- Exercise lasting more than about 60 minutes outdoors, or any session where your shirt is soaked through. Think East Coast runs, Sunday cycling, football at 4pm.
- A full day outside in the heat: NDP rehearsals, hiking at MacRitchie, a kid’s sports day, moving house.
- Illness with vomiting or diarrhoea, where you are losing fluid and minerals faster than you can eat them back. This is the one case where a proper oral rehydration solution from the pharmacy beats everything else.
- A juice cleanse or very low-calorie day, when you are eating little solid food and therefore little salt.
How to read an electrolyte drink label in Singapore
Since Nutri-Grade labelling became mandatory for packaged drinks, the front of the bottle tells you most of what you need. A few things to check:
- Sugar per 100ml. Classic sports drinks sit around 6g per 100ml, which is 30g in a 500ml bottle, roughly seven teaspoons. That is fine mid-marathon and pointless at your desk. A Nutri-Grade A or B drink has 5g per 100ml or less.
- Sodium. Rehydration needs sodium. A drink with zero sodium is flavoured water, however many minerals it lists. Look for at least 20 to 50mg per 100ml for everyday use; sports and oral rehydration products run higher.
- Potassium. Coconut water is the standout natural source, with around 250mg per 100ml. Most manufactured sports drinks contain far less.
- What the minerals come from. Added mineral salts work, but whole-food sources such as coconut water, citrus and leafy greens bring potassium and magnesium along with vitamin C, folate and polyphenols that a sachet cannot.
Electrolyte drinks you can buy in Singapore, compared
Here is how the main categories stack up for day-to-day use rather than for elite sport.
Sports drinks (100 Plus, Pocari Sweat, Gatorade and similar)
Built for endurance athletes, and they do that job well: fast sugar plus sodium in the ratio your gut absorbs quickest. The problem is that most people drink them when they are not exercising. For a walk to lunch, the sugar is the main thing you are getting. Isotonic versions in Singapore are typically Nutri-Grade C or D.
Electrolyte powders and tablets
Convenient, cheap per serving and often low in sugar. The good ones give you a sensible dose of sodium, potassium and magnesium. The weak points are taste, artificial sweeteners in many brands, and nothing else of nutritional value. They are a sound choice for athletes who already eat well.
Coconut water
Nature’s version. Naturally high in potassium, moderate in natural sugar, low in sodium. Pure coconut water on its own is excellent for everyday hydration but slightly under-delivers on sodium for heavy sweating, which is why it is often paired with a pinch of salt or with sodium-rich vegetables.
Cold-pressed electrolyte juices
This is the category we make, so take the next paragraph with that in mind, and then check the ingredients yourself. A cold-pressed electrolyte juice builds on coconut water and adds whole fruits and vegetables that carry the minerals coconut water lacks. Celery and spinach bring natural sodium and magnesium, lemon and green apple bring potassium and vitamin C, cucumber adds water and silica, and ginger or mint help the stomach settle after exercise. The result is a drink that replaces what you sweat out without added sugar, syrups or mineral powders, and with the fibre-free micronutrients of about a kilogram of produce in a bottle. The trade-off is a four-day shelf life and a price you would not pay for a 100 Plus.
Our two versions:
- Green Electrolytes: coconut water, green apple, lemon, spinach, Japanese cucumber, mint and parsley. Built as a post-workout drink. Light, savoury-sweet, drinks like a cold green lemonade.
- Earthy Electrolytes: grapefruit, coconut water, red apple, lemon, ginger and celery. Tarter, with the ginger warmth, and the one customers reach for on lower-calorie days.
Both are 500ml, pressed the day before delivery and never heat-treated. If you are new to us, both come with the site-wide 20% off applied automatically, so a bottle lands at S$13.60.
When to drink it
Timing matters more than most people think. For exercise, half a bottle before and the rest in the 30 minutes after works better than the whole thing at the end. For a long hot day outdoors, sip through the afternoon rather than catching up at night. During a juice cleanse, our cleanse menus already include an electrolyte juice mid-afternoon for exactly this reason, so you do not need to add one unless you are training hard.
Three cheap ways to rehydrate without buying anything
We would rather you drink well than buy from us out of habit, so here are the options that cost nothing:
- A pinch of salt and a squeeze of lime in a big glass of water. Not glamorous, but it is sodium plus potassium plus fluid, which is the whole point.
- Eat the electrolytes. A banana, a handful of nuts, a bowl of soup or a plate of stir-fried greens will replace a normal day’s losses.
- Chilled plain water with a few slices of cucumber if the issue is simply that you are not drinking enough. Most “I feel dehydrated” moments in an office are that.
Frequently asked questions
Is coconut water enough on its own after a workout?
For moderate sessions, yes. For heavy sweating over an hour or more, it is low in sodium, so pair it with salty food or choose a juice that adds celery, spinach or a mineral salt.
Are electrolyte drinks bad for you if you drink them daily?
The minerals are not the problem; the sugar in many commercial options is. A low-sugar, whole-food electrolyte drink is fine daily. A 30g-sugar sports drink daily is a soft drink habit by another name.
What is the best electrolyte drink for a hangover?
Alcohol makes you lose fluid and minerals, and the morning-after headache is partly dehydration. Coconut-water-based drinks with ginger help on both counts. We wrote more on this in how cold-pressed juice helps a hangover.
Do I need electrolytes during a juice cleanse?
You get fewer from food on a cleanse day, which is why a good cleanse menu includes one. See our complete guide to starting a juice cleanse for what a day looks like.
Both electrolyte juices are available as single bottles, or you can build your own box of any six juices in the cold-pressed juice range, with free islandwide delivery over S$60 and next-day delivery when you order by 10.30pm.
