⚡ CELL BOOSTER™ · 6 shots for €24,40 · 4 x 6 = 10% off · subscribe and save 15%
A dip in the middle of your performance? One shot, 15 to 30 minutes before.
80 mg caffeine for alertness, NR and magnesium for cell energy. One 25 ml shot. This is what Olivier takes when a round asks more.

Three moments that ask for focus, not a crash.
Halfway through your performance
The first half went fine. Then the concentration slips and every rep, every lap or every hole becomes work. Every athlete knows the moment.
The practice session after work
Head still at the office, a training ahead of you. You want to be present, not wired on coffee number four.
The long day
Early start, a match, a race or back-to-back meetings. A sugary energy drink gives you a spike now and a crash later.
Why a shot can be sharp and calm.

“I used to grab an energy drink during a dip. I got more energy for a moment, but I dropped back very quickly, sometimes even lower than before. With CELL BOOSTER™ I feel the energy and focus hold for longer.”
Six actives. One 25 ml shot.
Caffeine, 80 mg
A precise 80 mg per shot. Caffeine contributes to increased alertness and concentration. One shot, one moment.
FocusNicotinamide riboside (NR), 150 mg
A premium NAD+ precursor that helps maintain the molecule your mitochondria use to make energy.
Cell energyOrganic magnesium, 100 mg
Magnesium citrate contributes to normal muscle function and to the reduction of tiredness and fatigue.
Muscle and fatigueL-citrulline, 2000 mg
A high-dose amino acid that supports blood flow, so oxygen and nutrients reach the muscle.
FlowTaurine, 1000 mg
An amino acid that works alongside L-citrulline in the matrix and is found naturally in muscle and heart tissue.
Amino acidL-carnitine, 1000 mg
The metabolic catalyst that carries fatty acids into the mitochondria for energy.
MetabolismPowered by ABSORPTIX®
A 25 ml liquid shot instead of a capsule that has to break down first. Formulated with ABSORPTIX®, BRONN's patented formulation logic, for stability and rapid uptake. Red Energy aroma, no sugar, no artificial colours.

Energy drink vs CELL BOOSTER™.
Energy drink |
CELL BOOSTER™ |
|
|---|---|---|
| Caffeine | 90 to 200 mg | Exactly 80 mg |
| Sugar | Up to 40 g | 0 g |
| Works on | Only your nerves | Focus + cell energy |
| An hour later | The dip or crash | No sugar crash |
| Format | 250-500 ml can | 25 ml shot |
Category-level comparison (energy drinks), not a specific brand. CELL BOOSTER™ contains caffeine (80 mg per shot): not recommended for children, pregnant or breastfeeding women.
One shot. One moment.
Results vary from person to person. This is what we typically hear from CELL BOOSTER™ users.

25 ml
Shake, drink, 15 to 30 minutes before the moment. Max. one a day. Not with other caffeine sources late in the day.
What CELL BOOSTER™ users say about their focus.
“Perfect for an afternoon dip. Better than coffee.”
“Ideal before sport. No palpitations like with a pre-workout, but sharp.”
“No sugar crash afterwards, that is the most important thing for me.”
Verified CELL BOOSTER™ reviews via reviews.io, translated. Individual results vary.
CELL BOOSTER™: one shot per moment, however many moments you have.
Your questions about CELL BOOSTER™, answered.
When do I take it?
15 to 30 minutes before the moment you want to be sharp: a workout, a meeting, a long drive. Olivier takes it before a competition or halfway through a round, when his energy usually drops. Shake well and drink the whole shot. Max. one a day.
How much caffeine is in a shot?
80 mg per 25 ml shot, about one strong espresso and roughly half of a typical energy drink. Enough for alertness and concentration, low enough to keep your heart rate calm. Not recommended for children, pregnant or breastfeeding women.
Is it an energy drink?
No. An energy drink is sugar plus a lot of caffeine in a big can. CELL BOOSTER™ is a 25 ml shot with a precise 80 mg of caffeine, no sugar, and actives an energy drink does not have: NR for NAD+, magnesium, L-citrulline, taurine and L-carnitine. It fits in any pocket.
Can I combine it with CELL FUEL™ or LIFE FUEL™?
Yes. Olivier takes CELL FUEL™ every morning as the daily base and CELL BOOSTER™ on the days that ask more. Neither CELL FUEL™ nor LIFE FUEL™ contains caffeine, so the combination is easy.
Who is Olivier Withofs?
A Belgian PGA Golf Professional and BRONN ambassador. He plays and teaches golf, trains most days of the week and uses BRONN in his own routine. He shares what he does; he does not give medical advice.
Are BRONN supplements officially registered?
Yes. Every BRONN supplement is NUT-registered with the Belgian FPS Public Health, developed by Belgian pharmacists and made in Belgium. They are food supplements, not a replacement for a varied diet. Pregnant or breastfeeding, or taking medication? Check with your doctor or pharmacist first.
How does the subscription work?
One delivery a month at 15% off with free shipping. Swap products, adjust quantities or skip a month whenever you want. Cancel after month 2.
Sharp when it counts. Without the crash.
CELL BOOSTER™: 80 mg caffeine for alertness, NR and magnesium for cell energy. One 25 ml shot, 15 to 30 minutes before the moment. Developed by Belgian pharmacists, the shot Olivier Withofs takes when a day asks more.

Energy drink
