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22:00 — the shift starts

Five cans, named after the hour you drink them.

Scroll, and a night passes on one corner in Cihangir. Each can is dosed so that whichever one you pick, about one glass of çay's worth of caffeine is left in you at 08:00.

22:00Vişne 80 mg ≈ 20.6 mg left at 08:00

01:00 — midnight is behind you

The street belongs to taxis, couriers and the lamp.

It starts to rain. The half of the shift you can feel in your shoulders is still ahead.

01:00Limon & Zencefil 50 mg ≈ 19.5 mg left at 08:00

03:00 — the dead hour

Three windows lit on the whole street. And the cooler.

The hour every nurse, driver and guard knows by name. Wake up now and you still have to sleep at eight.

03:00Kara Dut 40 mg ≈ 20.6 mg left at 08:00

05:00 — the blue hour

The rain has stopped. The street is a mirror.

The first bakery van goes by. Two hours left, and anything strong now is still in you at bedtime.

05:00Nane & Misket Limonu 30 mg ≈ 20.4 mg left at 08:00

07:00 — shift's over

The sun comes up at the end of the street.

The lamps go out. The last can of the night has no caffeine in it at all, because the next thing you do is sleep.

07:00Kayısı & Ihlamur 0 mg no caffeine

A cold NÖBET can on the steel counter of a kiosk at night, beaded with condensation, the street blurred behind it.

The can

Pull the tab.

Every NÖBET can is the same slim 250 ml can with a different hour on it. Turn it, pick an hour, and open it the way you would at the counter: lift the ring.

hour03:00
caffeine40 mg
left at 08:0020.6 mg
flavourKara Dut

The dose rule

Whichever can you pick, about one glass of çay is left at 08:00.

Caffeine leaves the body slowly — in a typical adult, half of it is still there five hours later. So the later the hour on the can, the less is in it: 80, 50, 40, 30, and none at all at 07:00.

Each dose is the one the curve asks for at that hour, rounded to the nearest 10 mg, and each leaves 19.5 to 20.6 mg at 08:00 — about one ince belli glass of black tea. Drink one can a shift. Drink two and they add up; the calculator shows by how much.

Put in your own shift

Amount in the body, mg, each can drunk at its hour. One-compartment model, half-life 5 h, peak ≈ 47 min after drinking.
Canmgleft at 08:00glasses of çay
22:00 Vişne 80 20.6 1.03
01:00 Limon & Zencefil 50 19.5 0.98
03:00 Kara Dut 40 20.6 1.03
05:00 Nane & Misket Limonu 30 20.4 1.02
07:00 Kayısı & Ihlamur 0 0.0 0

The range

Five cans. Pick by the clock, not by the flavour.

The 22:00 can: sour cherry, in crimson with the hour in bare aluminium. 22:00 VişneSour cherry 80 mg≈ 20.6 mg at 08:00 The shift starts. The 01:00 can: lemon & ginger, in amber with the hour in bare aluminium. 01:00 Limon & ZencefilLemon & ginger 50 mg≈ 19.5 mg at 08:00 Midnight is behind you. The 03:00 can: black mulberry, in violet with the hour in bare aluminium. 03:00 Kara DutBlack mulberry 40 mg≈ 20.6 mg at 08:00 The dead hour. The 05:00 can: mint & lime, in teal with the hour in bare aluminium. 05:00 Nane & Misket LimonuMint & lime 30 mg≈ 20.4 mg at 08:00 The blue hour. The 07:00 can: apricot & linden, in apricot with the hour in bare aluminium. 07:00 Kayısı & IhlamurApricot & linden 0 mgcaffeine-free Shift's over. This one has none.

Who it is for

For the people who stay up for work.

Energy drinks are made for staying up for fun. These are for the night that is somebody's job — and ends with them having to sleep.

A taxi driver in his fifties sits sideways in the open door of a yellow taxi at night, a red NÖBET can in his hand, other taxis blurred behind him. 22:00 Taxi driverKemal, 56 · the rank on Sıraselviler A young courier with her helmet on stands by her scooter under a lit kiosk awning in the first rain, holding an amber NÖBET can. 01:00 CourierElif, 24 · under the awning of a büfe A male nurse in navy scrubs stands under the canopy of a hospital emergency entrance in heavy rain at night, a violet NÖBET can in his hand. 03:00 Emergency nurseMert, 33 · the ambulance bay, Şişli A baker with flour on his forearms stands in the doorway of a bakery in the blue light before dawn, racks of simit behind him, a teal NÖBET can in his hand. 05:00 BakerHasan, 38 · a simit oven in Tophane A pharmacist with her white coat over her arm stands at the rail of a ferry at sunrise, an orange NÖBET can in her hand. 07:00 PharmacistNesrin, 47 · the Karaköy ferry, going home

Generated images, made with ChatGPT from our own drawings of the cans. The people are as invented as the company.

The NÖBET cooler beside Çınar Büfe at 03:00 in the rain: five shelves of cans behind a lit glass door, one shelf per hour, its cable running along the paving to the kiosk's outdoor socket.

The cooler

One shelf per hour.

NÖBET is not sold in supermarkets. It lives in a glass-door cooler outside kiosks that stay open all night — the top shelf is 22:00, the bottom is 07:00, and the rail on each shelf says so.

If you work nights you already know where the nearest one is: the büfe opposite the hospital, the one by the taxi rank, the one at the port gate.

Find a cooler

Said plainly

Caffeine does not repay sleep.

It moves tiredness later; it does not remove it. After a night shift the tiredness is real, and so is the drive home. If you are too tired to drive, a can will not make you safe to.

For healthy adults, the European Food Safety Authority finds no safety concern up to 200 mg at once or 400 mg a day; up to 200 mg a day in pregnancy and while breast-feeding. NÖBET is not for children.

The numbers on this site describe a typical adult. Your half-life may be three hours or eight. The calculator lets you change it.

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Five cans, one per hour