2007-01-22 07:43:33 · 17 answers · asked by Anonymous in Food & Drink ➔ Other - Food & Drink
Caffeine has a half-life of 3 to 4 hours in a healthy adult. Coke has about 34 mg to start with. This means half of the caffeine you drank, or 17 mg, will still be in your system 3 to 4 hours later.
2007-01-22 08:54:41 · answer #1 · answered by doodlebuttus 7 · 2⤊ 0⤋
Caffeine is metabolized chiefly in the liver and excreted in the urine as 1-methyluric acid and 1-methylxanthine, with 10% of a given dose excreted unchanged.
The elimination half-life of normal doses (1 can of Coke for example) is 3 to 6 hours. This means that half of the caffeine will be gone from your body within 3 to 6 hours. 97% of the caffeine will be gone within five half-lives (in other words within 15-30 hours).
2007-01-24 07:43:55 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Caffeine has a half-life of 3 to 4 hours in a healthy adult. Coke has about 34 mg to start with. This means half of the caffeine you drank, or 17 mg, will still be in your system 3 to 4 hours later.
2007-01-22 13:41:54 · answer #3 · answered by Cody S 2 · 0⤊ 1⤋
in my personal experience, it really depends on your metabolism. personally, when i drink coke in the afternoon at about 3 to 5 pm, i have a hard time sleeping at night. maybe its because my body hasn't worn off the effects of caffeine yet.
2007-01-22 23:32:15 · answer #4 · answered by lanita grace 1 · 1⤊ 0⤋
12 to 18 hours
2007-01-24 04:55:53 · answer #5 · answered by LGC 1 · 0⤊ 1⤋
Caffeine stays in your system believe it or not 12 to 24 hours.So people that cant sleep that's why.
2007-01-24 03:12:57 · answer #6 · answered by -bls 3 · 0⤊ 0⤋
6 hours
2007-01-23 08:23:58 · answer #7 · answered by Kim W 1 · 0⤊ 0⤋
It is all in your size and weight and how your body metabolizes it.
I say 4 to 6 hours until it breaks down. It is water soluble
2007-01-23 09:57:50 · answer #8 · answered by Cable guy 3 · 0⤊ 0⤋
I've heard 2-3 hours if that helps.
2007-01-24 03:01:47 · answer #9 · answered by v s 1 · 0⤊ 0⤋
at least 4 hours
2007-01-23 03:55:34 · answer #10 · answered by jnwong39 2 · 0⤊ 0⤋