at the end of the day
The brain is 75% water. Even slight dehydration can cause the late afternoon fatigue often attributed to screen time.
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Best Sellers Pack · Hydratis
Don't like drinking water? You're not alone.
Nearly 8 out of 10 people don't drink enough water. Fatigue, dull skin, mental fog: often, all that's missing is water. Hydratis makes you want to drink and optimizes your hydration. Discover the Best-Sellers Pack, with our 4 best flavors combined: the 4 favorite flavors of our community, in one pack. 4 flavors included to find your favorite.
4 flavors included
Pêche
Fruit des bois
Citron fleurs de sureau
Menthe
Improves and accelerates hydration
Promotes muscle recovery
Promotes energy and concentration
Supports metabolism
🚚 Fast delivery
⭐ 4.8/5 (2,400+ reviews)
🏥 Available at the pharmacy
Stealth dehydration.
We associate it with the desert or marathons. In reality, it silently affects those who drink too little—in the office, while working remotely, or between coffees. Here's how it manifests.
at the end of the day
Before reaching for a third coffee, check your hydration: mid-afternoon fatigue is very often simply a lack of water and electrolytes.
difficulty concentrating
Losing just 1% of body water already impairs concentration and working memory. "Brain fog" at work often starts with an empty glass.
due to lack of hydration
The body is made up of almost 60% water. When hydration levels drop, thirst can quickly set in, often just as you start to feel a dip in energy.
The observation
Two coffees, one glass of water all day. And you wonder why you're drained.
The problem isn't in your head. It's your hydration. Most people drink half of what their body needs—often because plain water bores them. As a guideline, the average water requirement is 1.6 L per day for women (about 6 large glasses of water) and 2 L for men (about 8 large glasses). However, coffee and tea are diuretics: they make you eliminate more fluid than you drink. The result is chronic, constant under-hydration, which saps your energy without you realizing the connection.
Scientifically validated
How does it work
One Hydratis tablet in 250 mL of water, and two things happen. First, it gives a light and pleasant taste that finally makes you want to finish your drink. Second, its unique formula based on electrolytes and trace elements — based on WHO recommendations for ORS — relies on sodium-glucose co-transport. This mechanism acts as a true "key" to optimize the absorption of water by the body and transport it more quickly to the cells. You drink more, and each sip hydrates better.
2
2 key ingredients (sodium and glucose)
4
essential electrolytes
Weak
in calories
3 things that change in a week.
What happens when drinking water finally becomes an enjoyable habit.
A light, fruity taste, not very sweet. You'll naturally go from 2 glasses to 1.5L a day without even trying.
Fewer slumps at 3 PM, less brain fog. A well-hydrated brain goes the distance all day long.
Unlike syrups and sodas, there's no glycemic spike. Just good-tasting water that optimizes hydration.
Not all forms of hydration are equal.
The secret to good hydration? Combining the pleasure of a tasty drink with the benefits it brings to your body
| Criterion | Still water | Coffee / Tea | Sports Drink | Sweet water | HYDRATIS |
|---|---|---|---|---|---|
| Makes you want to drink it | No | No | No | Yes | Yes |
| Cellular hydration | No | No | Yes | No | Yes |
| Sugar per glass | 0 g | 0 g | 5–20 g | 20–30 g | 2 g |
| Electrolytes | X None | X None | ✓ Little | 2g | ✓ Complete |
| Low-calorie | ✓ Yes | ✓ Yes | X No | X No | ✓ Yes |
★★★★★ 4.8/5 — based on 2,400+ verified reviews
They've finally got into the habit of drinking.
★★★★★
"Still water bores me; I always ended up drinking soda. Now I have a light flavor, zero sugar, and I keep my water bottle with me all day at the office. That 3 PM slump has significantly lessened."
WHO Protocol – ORS
The formula that changes everything.
Hydratis replicates the Oral Rehydration Solution validated by the World Health Organization: the medical standard for rehydration. Four electrolytes, two trace elements in exact ratios. Very low calorie.
Potassium
Sodium
Magnesium
Chloride
Zinc
Manganese
Answers to your questions
I don't like the taste of water. Does that really make a difference?
This is exactly the problem Hydratis solves. The tablet gives your water a light and fruity taste (lemon, grapefruit, raspberry, peach), slightly sweet, with no chemical aftertaste. Most users naturally double their water consumption from the first week, simply because drinking becomes enjoyable.
How many lozenges per day?
For daily use, 1 to 2 tablets per day are sufficient (one in the morning, possibly one in the afternoon). Each tablet dissolves in 250 mL of water. One tube contains 20 tablets — the Discovery Pack (4 tubes) therefore covers approximately 1.5 to 2 months.
Does this replace the water, or is it in addition to it?
It's added to your water—it's not a separate drink, it's your water made more palatable and more hydrating. You continue to drink water, but you drink more of it, and each sip is better absorbed thanks to the electrolytes. That's the whole point.
Discovery Pack — €49.50
Make hydration a reflex, without even thinking about it.
4 tubes of flavor pods of your choice + 1 customizable 500 mL insulated water bottle. Your water bottle always within reach, the taste that makes you want more: you finally drink enough, every day. If you don't feel the difference: we'll refund you.
Optimizes hydration
Optimizes hydration
Supports metabolism
Improves skin
Boost the mind
🚚 Fast delivery
⭐ 4.8/5 (2,400+ reviews)
🏥 Available at pharmacies