How much caffeine is in C4 Ripped?

One scoop (6.3 g) of C4 Ripped has 150 mg of caffeine.

That's about one and a half cups of brewed coffee, and 38% of the 400 mg a day the FDA cites for most healthy adults.

Source: cellucor.com · checked 10 Nov 2026

When did you have it?

Had at 3 pm, about 52 mg is still in you at an 11 pm bedtime. That might affect your sleep.

Bedtime

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Latest time to drink it

For an 11 pm bedtime, most people should finish one scoop (6.3 g) of C4 Ripped by about 2:40 pm. The table works it out for other bedtimes and for how sensitive you are: it is the latest time to start one so that the caffeine left stays under the line all night.

Bedtime	Very sensitive under 25 mg	Average under 50 mg	Not very sensitive under 100 mg
9 pm	7:40 am	12:40 pm	5:40 pm
10 pm	8:40 am	1:40 pm	6:40 pm
11 pm	9:40 am	2:40 pm	7:40 pm
Midnight	10:40 am	3:40 pm	8:40 pm
1 am	11:40 am	4:40 pm	9:40 pm

For one scoop (6.3 g) of C4 Ripped, average clearance (half-life 5 h), 8 hours of sleep. "Any time" means even one at bedtime stays under the line.

How long it lasts

The caffeine from one scoop (6.3 g) of C4 Ripped peaks in your blood about 70 minutes after you start it, at roughly 128 mg. Half of it is gone in about 5 hours for an average adult; that ranges from roughly 3 to 7 hours, and longer in pregnancy or with some medicines.

Time after	3 hours	6 hours	9 hours	12 hours
Still in you	104 mg	69 mg	45 mg	30 mg

So one had at 3 pm leaves about 52 mg at 11 pm. How long caffeine lasts explains the curve.

How it compares

C4 Ripped is stronger than 42% of the 34 supplements and medicines we track, by caffeine per serving.

To reach 400 mg in a day you would need about 2½ of these.

Less caffeine

G FUEL Energy Formula 140 mg, 1 scoop
Amino Energy 100 mg, 1 serving
Ergotamine and Caffeine (Cafergot) 100 mg, 1 tablet

More caffeine

Gold Standard Pre-Workout 175 mg, 1 scoop
Mr. Hyde Pre-Workout 190 mg, 1 scoop, Infinite
1st Phorm Project-1 Pre-Workout 200 mg, 1 serving

Same caffeine: Goody's Hangover Powder, Goody's Mental Alert Powder, Momentous Pre-Workout.

FAQ

Is C4 Ripped high in caffeine?

Yes. One scoop (6.3 g) of C4 Ripped has 150 mg, which is 1.6 times an 8 fl oz cup of brewed coffee (95 mg).

Can I drink C4 Ripped at night?

Not if you want to sleep well. Had at 7 pm, it leaves about 91 mg in an average adult at an 11 pm bedtime, above the 50 mg most people sleep fine with. The latest time for an 11 pm bedtime is about 2:40 pm.

How long does the caffeine in C4 Ripped last?

It peaks about 70 minutes after you start it. Of the 150 mg, about 69 mg is still in you 6 hours later and 30 mg after 12 hours, for an average adult with a 5-hour half-life.

Does C4 Ripped have more caffeine than a cup of coffee?

Yes. One scoop (6.3 g) of C4 Ripped has 150 mg; an 8 fl oz cup of coffee has 95 mg.

Method and limits

The caffeine figure comes from cellucor.com; recipes, brewing and batches vary, so a real serving can differ. The curves use a standard one-compartment model with an average 5-hour half-life and a sleep-friendly line of 50 mg; your own body may clear caffeine faster or slower. How it works has the details.

These are estimates for information, not medical advice.