How much caffeine is in pre-workout? C4, Ghost, Alani Nu and 14 more, ranked

Most pre-workouts land between about 135mg and 400mg of caffeine per serving. To anchor the three people ask about most: C4 Original is 150mg, Alani Nu is 200mg, and Ghost Legend is 300mg per scoop. So the honest answer to "how much caffeine is in pre-workout" is: it depends entirely on the tub, and the spread is wider than most people expect.

I make espresso for a living, so I think about caffeine the way a bartender thinks about proof. A double shot is roughly 130mg. The lightest pre-workouts are about one shot. The heaviest ones are closer to three or four shots slammed at once, before you have done a single rep. That framing matters more than any marketing word on the label.

The short version, then the chart

Pre-workout caffeine is usually caffeine anhydrous (dried, fast acting) or caffeine from green coffee beans, sometimes paired with a slow-release form like di-caffeine malate. A single number on the front of the tub can hide a "per two scoops" serving, so the number that matters is caffeine per serving as the label defines a serving. Below is where 17 common formulas actually sit, pulled from each brand's own supplement facts or product page.

Pre-workout caffeine chart

Numbers come from the brands directly: Cellucor for the C4 line, Alani Nu, Ghost Legend's supplement facts, Gorilla Mind, Kaged, and REDCON1.

For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. How caffeine affects you depends on your own tolerance and health, so treat these numbers as information, not advice.

That number is worth sitting with here, because several of these formulas hit 400mg in a single full serving. That is a full day's ceiling before you count the coffee you already drank, the pre-workout you took yesterday, or the energy drink after. The "one scoop" option on the high-stim tubs exists for a reason, and it usually still gives you 200mg.

How to read a pre-workout label without getting fooled

Three things trip people up. First, serving size. If a tub advertises 400mg but the serving is two scoops, one scoop is 200mg, and plenty of experienced lifters run one scoop. Read the caffeine figure against the scoop count, not the front of the label. Second, blends. When a label lists caffeine anhydrous plus di-caffeine malate or an extended-release form, add them for the total, since the slow-release piece still counts toward your daily load. Third, "natural" caffeine from green coffee beans is chemically the same stimulant as anhydrous. It is not gentler because it came from a bean, and neither is your morning espresso.

If you are stacking pre-workout on top of a coffee habit, do the simple math. A brewed cup is roughly 95mg, a double espresso around 130mg. Add that to a 300mg scoop and you are near the FDA's daily context number by mid-morning. None of this is a warning, it is just arithmetic that the label will not do for you.

Related caffeine reading

• Celsius vs Alani Nu caffeine, if the Alani Nu number above is the one you care about.
• Caffeine pills vs coffee, for how a measured dose compares to a brewed cup.
• The Barista Life caffeine database, our hub for caffeine numbers across drinks and supplements.

FAQ

How much caffeine is in most pre-workouts? Most sit between 135mg and 400mg per serving. The common middle is 200mg to 300mg, with C4 Original at 150mg and Alani Nu at 200mg on the lighter side and Gorilla Mode, Ryse Godzilla, and Ghost Legend All Out at 400mg per full serving on the heavy side.

Is 300mg of caffeine a lot for a pre-workout? It is on the higher side but not unusual. It is roughly two to three cups of coffee taken at once. Since the FDA cites 400mg a day as the general context ceiling for healthy adults, a 300mg scoop uses most of that in one go, especially if you also drink coffee.

Which pre-workout has the least caffeine? Of the formulas here, C4 Sport is lowest at 135mg, with C4 Original and C4 SuperSport at 150mg. If you want lower still, most brands sell a stim-free version with zero caffeine.