Energy drinks · NOS
How much caffeine is in NOS?
A 16 fl oz can of NOS Zero Sugar has 200 mg of caffeine, as NOS states it on its own US website.
Checked 28 Oct 2026 on drinknos.com. Across the 3 NOS lines and sizes we checked: 160–200 mg per container.
One can at 75 kg: studies of caffeine and exercise use 3–6 mg per kg in one dose (225–450 mg at 75 kg). It's 50% of the FDA's 400 mg a day.
Every NOS line and size
Highest caffeine first. Open a row's flavours to see which ones share its caffeine.
| Caffeine level | One at your weight (75 kg) | Label source | |||||
|---|---|---|---|---|---|---|---|
| Grand Prix Guava16 fl oz can | 200 mg | 12.5 | 50% | 2.0 cans | High | Below research doseIn the research range400 mg or more89% of your 225–450 mg range | drinknos.comchecked 28 Oct 2026 |
| Zero Sugar16 fl oz can | 200 mg | 12.5 | 50% | 2.0 cans | High | Below research doseIn the research range400 mg or more89% of your 225–450 mg range | drinknos.comchecked 28 Oct 2026 |
| GT Grape16 fl oz can | 160 mg | 10 | 40% | 2.5 cans | Moderate | Below research doseIn the research range400 mg or more71% of your 225–450 mg range | drinknos.comchecked 28 Oct 2026 |
Your bodyweight
Caffeine studies use 3–6 mg per kg in one dose. Enter your weight and the table shows what one can or shot is for you. Worked out in your browser; nothing is sent or stored.
Adding coffee or a pre-workout? Use the full caffeine calculator.
Where the caffeine comes from
The brand's page names no caffeine source for:
- NOS Grand Prix Guava, 16 fl oz can: total 200 mg · “200mg of Caffeine · Available in 16 OZ. 16 OZ. 15-PACK”
- NOS Zero Sugar, 16 fl oz can: total 200 mg · “200mg of Caffeine · Available in 16 OZ. 16 OZ. 15-PACK”
- NOS GT Grape, 16 fl oz can: total 160 mg · “160mg of Caffeine · Available in 16 OZ. 16 OZ. 15-PACK”
Compared with pre-workouts
Pre-workouts with 175–225 mg of caffeine in one serving, within 25 mg of NOS Zero Sugar, 16 fl oz can, in our ranking by dose.
- Huge Supplements Wrecked 188 mg per serving
- Jocko Fuel Pre-Workout 200 mg per serving
- Transparent Labs BULK 200 mg per serving
- RAW Nutrition CBUM Essential Pre 200 mg per serving
- Thorne Advanced Pre-Workout 200 mg per serving
What else is on the label
Amounts per container, as printed. An ingredient is graded only where we have a research dose for it; vitamins and minerals aren't graded here.
NOS Grand Prix Guava, 16 fl oz can (caffeine only)
The brand's page gives the caffeine for this line, and we didn't find its full facts panel there.
NOS Zero Sugar, 16 fl oz can (caffeine only)
The brand's page gives the caffeine for this line, and we didn't find its full facts panel there.
NOS GT Grape, 16 fl oz can (caffeine only)
The brand's page gives the caffeine for this line, and we didn't find its full facts panel there.
Questions
How much caffeine is in a can of NOS?
A 16 fl oz can of NOS Zero Sugar has 200 mg. The NOS lines we checked range from 160 to 200 mg.
Which NOS has the most caffeine?
NOS Grand Prix Guava, 16 fl oz can and NOS Zero Sugar, 16 fl oz can: 200 mg each.
How much caffeine is in NOS per fl oz?
10–12.5 mg per fl oz, worked out from each label's caffeine and the container's stated volume.
How many cans of NOS Zero Sugar add up to 400 mg?
2.0 cans of the 16 fl oz size. The FDA cites 400 mg a day as an amount not generally linked to negative effects for most healthy adults.
Where does NOS's caffeine come from?
NOS's pages state the caffeine without naming its source.