Caffeine & Sleep
Energy drink

Caffeine in Monster Energy (Original)

160mg
per 16 oz
≈ 2 coffees≈ 2 Red Bulls40% of FDA daily max

Is that a lot?

Monster Energy (Original) is 40% of the FDA’s recommended daily maximum, in a single 16 oz.

Green tea
28 mg
Espresso
63 mg
Red Bull
80 mg
Coffee
95 mg
Monster Energy (Original)
160 mg
FDA daily max · 400mg
Before bed

When can I drink Monster Energy (Original) and still sleep?

Your Monster Energy (Original) cutoff
You drink it at
Bedtime
Monster Energy (Original) · 160 mg · assuming an average ~5 h half-life
At bedtime
53 mg
may delay sleep
Latest safe Monster Energy (Original): 2:37 PM

How much caffeine is in Monster Energy (Original)?

A 16 oz Monster Energy delivers about 160 mg of caffeine, roughly the punch of two cups of coffee in one big can. It also carries a hefty 54 grams of sugar, among the sweeter drinks you can buy.

ServingCaffeineSugar
16 oz160 mg54 g

Very high sugar.

Will Monster Energy (Original) affect your sleep?

From 160 mg, a Monster takes around eight hours to fall under 50 mg, so an afternoon can can still be active deep into the evening. This is one to keep to the morning if bedtime matters.

Heads up
At 160 mg, a second Monster Energy (Original) in a day pushes you toward the FDA’s 400 mg ceiling — and that’s before any coffee or tea. Log everything in the calculator to see your real daily total.

Source: Manufacturer label

Related drinks

Monster Energy (Original) & sleep — FAQ

Likely if it's not early, at 160 mg a full Monster takes about eight hours to clear toward the 50 mg threshold, so an afternoon can may still be with you at bedtime.

Monster Energy (Original) has 160 mg per 16 oz — about 40% of the FDA’s 400 mg daily maximum for healthy adults. That’s roughly 2 cups of coffee.

It depends on your bedtime and how fast you clear caffeine. Use the calculator above to see when Monster Energy (Original) drops below the ~50 mg “ok to sleep” threshold for your bedtime.

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