How the SUEL Energy Pastille works: 10 mg of caffeine from guarana per pastille, dissolved in about two minutes and freely dosable. With charts and studies.
With caffeine, more doesn't automatically help more. What matters is the right amount at the right time. The SUEL Energy Pastille is built for exactly that: portionable, precise and predictable. Here we show how it all fits together.
10 mg
caffeine
per pastille
1/6
of a cup of coffee
(approx. 60 mg)
~2 min
until the pastille
has fully dissolved
How much caffeine is right for you is very individual. Too little and you stay tired. Too much and you get jittery. In between lies your focus zone. Coffee and energy drinks come in fixed servings of 60 or 80 mg. With 10 mg per pastille, you work your way up to your amount in small steps and hit it again next time.
One pastille contains 10 mg of caffeine, about a sixth of a cup of coffee. Caffeine breaks down slowly. Instead of topping up with a big serving every few hours, which pushes you past your zone and then lets you drop below it again, you top up with one or two pastilles as soon as it wears off. That way you stay in your zone through a long day. And in the evening, you simply leave them out.
The recipe is fixed to the milligram: each pastille weighs 1 g and contains 100 mg of guarana extract, which provides exactly 10 mg of caffeine. It is made in Germany in an EU-GMP-certified facility that specializes in pastilles with active ingredients.
| Caffeine per pastille | 10 mg |
|---|---|
| Guarana extract per pastille | 100 mg (10%) |
| Weight per pastille | 1 g |
| Pastilles per pack | 12 |
| Caffeine per pack | 120 mg |
| First batch, average weight | 1.018 g |
| First batch, deviation | −1.2% to +1.4% |
| Manufacturing | Germany, EU-GMP-certified |
The pastille melts away completely in about two minutes, leaving nothing behind. Unlike caffeine gum, there's no chewed mass left over that holds back part of the caffeine and that you spit out at the end. What's in the pastille reaches you.
With coffee, a lot depends on what else is in your stomach: on an empty stomach it acts faster and stronger, after a meal later and flatter. The pastille melts in your mouth in about two minutes. Some of the caffeine can already be absorbed through the lining of your mouth, the rest through the stomach as usual. So you know when it kicks in, and the effect feels more alike from one time to the next.
Caffeine breaks down slowly: after about five hours, on average half of it is still in your body, longer for some people. So what you take at 6 pm is still half there at 11 pm. In 10 mg steps, you decide exactly how much that is.
Active ingredient
Our caffeine comes from guarana, the seeds of a plant from the Amazon region. Chemically, it's the same caffeine as in coffee and is absorbed just as quickly. We deliberately chose a plant source instead of synthetic caffeine.
Sugar-free
Many energy drinks deliver a lot of sugar along with the caffeine: blood sugar rises quickly and then drops again. The pastille is sugar-free and sweetened with sweeteners. That up and down is gone.
Base
Acacia resin is the base of the pastille. It's natural, dissolves completely and carries flavor well. It has long been used in pharmaceuticals to carry active ingredients.
You decide how much caffeine you take, when and in what steps. SUEL tops up exactly what you're missing that day. Up to 100%, not beyond. Because 120% doesn't feel like more focus, it feels like shaky hands.
Try it yourself.
10 packs of 12 pastilles · €24,90 · Free shipping in Germany
The key studies and assessments behind this page. Most of the charts above are simplified models. Here's what they're based on.
Portionable
Even very small amounts from 12.5 mg of caffeine changed mental performance in tests.
Effects of low doses of caffeine on cognitive performance, mood and thirst in low and higher caffeine consumers. Psychopharmacology, 152, 167–173. doi:10.1007/s002130000506
How quickly caffeine is broken down differs greatly from person to person, mainly due to the liver enzyme CYP1A2.
Interindividual differences in caffeine metabolism and factors driving caffeine consumption. Pharmacological Reviews, 70(2), 384–411. doi:10.1124/pr.117.014407
Effect¹
EFSA confirms: caffeine contributes to increased alertness and attention, from 75 mg per serving.
Scientific Opinion on the substantiation of health claims related to caffeine (Art. 13(1) of Regulation (EC) No 1924/2006). EFSA Journal, 9(4), 2054. doi:10.2903/j.efsa.2011.2054
Precise
Caffeine is absorbed practically completely: the measured bioavailability was around 100%.
The absolute bioavailability of caffeine in man. European Journal of Clinical Pharmacology, 24, 93–98. doi:10.1007/BF00613933
Gum only releases its caffeine as you chew: around 48% after 2 minutes, around 78% after 5 minutes, around 96% after 10 minutes.
Caffeine release and absorption from caffeinated gums. Food & Function, 10, 1792–1796. doi:10.1039/C9FO00431A
Predictable
Caffeine from gum reached the blood faster than from capsules, an indication of absorption already in the mouth.
The rate of absorption and relative bioavailability of caffeine administered in chewing gum versus capsules to normal healthy volunteers. International Journal of Pharmaceutics, 234(1–2), 159–167. doi:10.1016/S0378-5173(01)00958-9
After a meal, caffeine stayed in the stomach for a long time: peak after around 4 hours instead of around 45 minutes on an empty stomach.
Prolongation of the gastric residence time of caffeine after administration in fed state. European Journal of Pharmaceutics and Biopharmaceutics, 199, 114313. doi:10.1016/j.ejpb.2024.114313
Evening
Even 6 hours before bedtime, caffeine (400 mg) still shortened sleep by more than an hour.
Caffeine effects on sleep taken 0, 3, or 6 hours before going to bed. Journal of Clinical Sleep Medicine, 9(11), 1195–1200. doi:10.5664/jcsm.3170
Safety
Safe for healthy adults: up to 200 mg at once and up to 400 mg per day. Close to bedtime, around 100 mg can already disturb sleep.
Scientific Opinion on the safety of caffeine. EFSA Journal, 13(5), 4102. doi:10.2903/j.efsa.2015.4102
Guarana
In the lab, caffeine from guarana was released and absorbed just as quickly as pure caffeine.
Dissolution and absorption of caffeine from guarana. Journal of Pharmacy and Pharmacology, 44(9), 769–771. doi:10.1111/j.2042-7158.1992.tb05517.x
Schematic illustrations: simplified models for illustration, not measured values. Exception: the gum values come from Morris et al. 2019. How quickly caffeine takes effect and breaks down varies from person to person; the half-life averages approx. 5 hours.
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