ATNU Refuel Tabs
Sodium and potassium are the two electrolytes you lose the most when you sweat, and the only ones with real physiological effects during activity. Sodium retains fluid in the body. Potassium is the primary electrolyte inside muscle cells and necessary for normal muscle function. The body needs both, otherwise you only get half the effect.
ATNU Refuel Tabs contain 250-375 mg sodium and 105 mg potassium per tablet. One of the few Danish products with both electrolytes in relevant amounts.
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ATNU Refuel Tabs
Description
ATNU Refuel electrolyte TABS
Short: High dose sodium and potassium (250 + 105 mg) | Plus calcium, magnesium, vitamin C and B6 | Only 8 kcal | 20 tabs |
The human body is made up of approximately 55-60% water, and fluid balance is crucial for both health and performance. Even a fluid loss of 2-3% of body weight can significantly reduce physical and mental performance.
When you sweat, you don't just lose fluid - you also lose electrolytes such as sodium, potassium, magnesium and calcium. Sodium in particular is key because it helps the body retain fluid in the bloodstream. Dehydration can lead to lower blood volume, higher heart rate, faster depletion of carbohydrate stores and a workout that feels unnecessarily hard.
Key benefits:
- High doses of sodium (250 mg) and potassium (105 mg) - both essential for hydration
- With calcium, magnesium, vitamin C and B6 - supports muscle function and energy metabolism
- One tablet is enough - significantly higher electrolyte content than most other brands
- Gluten-free and without added sugar - natural sugar content
- Developed in Denmark, produced in the EU
Here's why ATNU Refuel works better than most:
Most electrolytes only give you sodium. But the body needs both sodium and potassium. Sodium keeps fluid in the blood. Potassium keeps fluid inside the muscles. Together, they ensure that the fluid gets where you need it.
Safety and fillers
There has been increased focus on fillers in electrolyte tablets. Research shows no evidence that fillers such as sorbitol are dangerous at normal doses. Major international organizations such as EFSA (European Food Safety Authority) and FDA have approved these ingredients as safe for food.
Usage
- issolve 1 tablet in 500 ml of water and let it effervesce completely
- Use before, during or after training depending on need
- Max. 1 tablet per day
Weight: 84 grams
Number of tabs per tube: 20 pcs
Storage: Dry and not too hot. Should be stored out of reach of small children.
Ingredients
Acid (citric acid, sodium bicarbonate), bulking agent (sorbitol), flavoring (raspberry), magnesium carbonate, potassium chloride, dextrose, beetroot juice powder, calcium carbonate, corn starch, sweetener (sucralose), L-ascorbic acid (vitamin C), coloring agent (riboflavin), maltodextrin, pyridoxine hydrochloride (vitamin B6).
Mixing ratio
1 tabs mix with 500 ml water
Product benefits
Caffeine Free
Fresh Variety of Flavors
Stay Hydrated
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FAQs
Please read our FAQs page to find out more.
How does UV-C Antibacterial cleaning work?
Silverdrops 3-in-1 uses UV-C technology to clean your water and bottle from bacteria. >99,9% of bacteria will be removed after a 1-minute cleaning cycle.
The cleaning process is started by pressing a button on top of SilverLid. Silverlid has 2 modes of UV-C Antibacterial cleaning: Manual mode and Auto mode.
Are you sure that your UV-C Antibacterial cleaning reely works?
YES.
UV‑C light is a proven disinfection method used in critical environments such as water treatment plants, where it replaces chlorine to eliminate harmful microorganisms. UV‑C damages the DNA and RNA of bacteria, viruses, and other pathogens, making them unable to survive or reproduce.
Our products are also verified through independent third‑party laboratory testing, which confirms their effectiveness under controlled conditions.
Whats the difference between Manual mode and Auto mode?
In Manual mode the Silverlid performs a 1-minute UV-C Antibacterial cleaning to the water and the inner surface of the bottle and turns off.
In Auto mode the Silverlid™ performs an auto UV-C Anti-bacterial cleaning of the water and the inner surface of the bottle. The cleaning cycle runs for 10 seconds every 2 hours.
How do I charge SIlverLid?
SilverLid can be recharged via USB-C cable which is included in the box. It is located on top of the SilverLid - protected by a Rubber Lid.
What is the battery life time?
When fully charged SilverLid can run for >3weeks in Auto mode - longer in Manual mode.
SilverLid has a LED status indicator on top. When your battery is low, SilverLid will blink Orange before and after a cleaning cycle to warn you to charge the battery.
Does Silverdrops 3-in-1 remove particles like heavy metals, chlorine etc.?
No.
Silverdrops 3-in-1 does not contain a filter and therefor it does not remove particles/physical impurities from the water.
If you need filtration of heavy metals, chlorine etc. check out our Silverdrops Filtration System which can be purchased as an add-on to all of our Silverdrops bottles - BUY NOW
How do the UV‑C Antibacterial cleaning and the Filtration system work when travelling or hiking?
The UV‑C Antibacterial cleaning ensures your water is microbiologically safe by neutralizing bacteria and viruses. It gives you protection whether you’re filling up in airports, hotels, public taps, or remote mountain areas.
The Filtration System enhances the water even further by removing particles, sediments, chlorine, heavy metals, and other substances that affect clarity and flavor. This results in cleaner, fresher, and noticeably better‑tasting water.
Using both together gives you the highest possible water quality:
- UV‑C ensures microbiological safety
- The filter improves purity, clarity, and taste
Together, they deliver safe, clean, and great‑tasting water anywhere in the world — from rugged trails to busy city streets.
Which Silverdrops products is it compatible with?
Silverlid 3-in-1 is compatible with all our models/bottles.
Is it leak-proof?
Yes.
SilverLid seals tight when closed. Always check the seal before putting it in your bag.