Comments on: How much caffeine is too much caffeine? http://boingboing.net/2013/02/05/how-much-caffeine-is-too-much.html Brain candy for Happy Mutants Sat, 25 May 2013 07:47:00 +0000 hourly 1 http://wordpress.org/?v=3.4.1 By: Gyrofrog http://boingboing.net/2013/02/05/how-much-caffeine-is-too-much.html#comment-1648147 Gyrofrog Wed, 06 Feb 2013 19:59:00 +0000 http://boingboing.net/?p=210953#comment-1648147  aka Buzzballs  aka Buzzballs

]]> By: adonai http://boingboing.net/2013/02/05/how-much-caffeine-is-too-much.html#comment-1647053 adonai Tue, 05 Feb 2013 22:50:00 +0000 http://boingboing.net/?p=210953#comment-1647053 75 cups? 75 cups?

]]> By: Antinous / Moderator http://boingboing.net/2013/02/05/how-much-caffeine-is-too-much.html#comment-1646862 Antinous / Moderator Tue, 05 Feb 2013 20:58:00 +0000 http://boingboing.net/?p=210953#comment-1646862 A cup of tea is enough to kick me into SVT. A cup of tea is enough to kick me into SVT.

]]> By: dioptase http://boingboing.net/2013/02/05/how-much-caffeine-is-too-much.html#comment-1646778 dioptase Tue, 05 Feb 2013 20:02:00 +0000 http://boingboing.net/?p=210953#comment-1646778 I did these calculations about 9 years ago. Forgive the cut and paste. Caffeine LD50 (50/50 chance of killing you) is 150 mg/kg. Half life of 5-7 hours with extremes of 3 to 20 hours common. Coffee has 93 to 164 mg/5oz serving. I'm a big guy, 100kg, so could stand 15g before having a better than even chance of dying. Drinking 100 cups of the hard stuff at once would be a bad idea (16.4 g). But drink a cup of the hard stuff every 14.4 minutes and it never goes over 6.4 g (assuming a 7 hour half life). Now try some small woman, say 45 kg. Her limit is 6.75 gm. Might be ok or a risk, less than 50%, of dying. But if she's on the pill, her metabolism half life is 13 hours. She hits exceed 9.3 g. Well above LD50 so probably a goner. Your mileage may vary. References: http://codeine.50g.com/other/caffeine.html http://www.chinamist.com/knowledge/health/caffeine /content.htm http://www.erowid.org/chemicals/caffeine/caffeine_ effects.shtm I did these calculations about 9 years ago. Forgive the cut and paste.

Caffeine LD50 (50/50 chance of killing you) is 150 mg/kg.
Half life of 5-7 hours with extremes of 3 to 20 hours common.

Coffee has 93 to 164 mg/5oz serving.

I’m a big guy, 100kg, so could stand 15g before having a better than even chance of dying. Drinking 100 cups of the hard stuff at once would be a bad idea (16.4 g).

But drink a cup of the hard stuff every 14.4 minutes and it never goes over 6.4 g (assuming a 7 hour half life).

Now try some small woman, say 45 kg. Her limit is 6.75 gm. Might be ok or a risk, less than 50%, of dying. But if she’s on the pill, her metabolism half life is 13 hours. She hits exceed 9.3 g. Well above LD50 so probably a goner.

Your mileage may vary.

References:

http://codeine.50g.com/other/caffeine.html
http://www.chinamist.com/knowledge/health/caffeine /content.htm
http://www.erowid.org/chemicals/caffeine/caffeine_ effects.shtm

]]> By: Thomas Schmidt http://boingboing.net/2013/02/05/how-much-caffeine-is-too-much.html#comment-1646753 Thomas Schmidt Tue, 05 Feb 2013 19:47:00 +0000 http://boingboing.net/?p=210953#comment-1646753 Coffee must be like Iocane... I have developed an immunity to large doses :-) Coffee must be like Iocane… I have developed an immunity to large doses :-)

]]> By: Neowolf http://boingboing.net/2013/02/05/how-much-caffeine-is-too-much.html#comment-1646737 Neowolf Tue, 05 Feb 2013 19:32:00 +0000 http://boingboing.net/?p=210953#comment-1646737 Probably depends on whether you have the fast metabolizer version of CYP1A2. Probably depends on whether you have the fast metabolizer version of CYP1A2.

]]> By: Cameron Postelwait http://boingboing.net/2013/02/05/how-much-caffeine-is-too-much.html#comment-1646643 Cameron Postelwait Tue, 05 Feb 2013 18:32:00 +0000 http://boingboing.net/?p=210953#comment-1646643 yeah but it takes at least 6 cups a day to counter-balance my heroin habit. yeah but it takes at least 6 cups a day to counter-balance my heroin habit.

]]> By: GawainLavers http://boingboing.net/2013/02/05/how-much-caffeine-is-too-much.html#comment-1646625 GawainLavers Tue, 05 Feb 2013 18:25:00 +0000 http://boingboing.net/?p=210953#comment-1646625 Huh...I consider myself a lightweight because after 1 mug I'm good, but two mugs and I'm too hyper to focus.  But those are 24oz mugs. Huh…I consider myself a lightweight because after 1 mug I’m good, but two mugs and I’m too hyper to focus.  But those are 24oz mugs.

]]> By: s2redux http://boingboing.net/2013/02/05/how-much-caffeine-is-too-much.html#comment-1646621 s2redux Tue, 05 Feb 2013 18:23:00 +0000 http://boingboing.net/?p=210953#comment-1646621 You owe me a Coke! <g> You owe me a Coke! <g>

]]> By: Wreckrob8 http://boingboing.net/2013/02/05/how-much-caffeine-is-too-much.html#comment-1646603 Wreckrob8 Tue, 05 Feb 2013 18:11:00 +0000 http://boingboing.net/?p=210953#comment-1646603 8oz cups? How unamerican! 8oz cups? How unamerican!

]]> By: theophrastvs http://boingboing.net/2013/02/05/how-much-caffeine-is-too-much.html#comment-1646606 theophrastvs Tue, 05 Feb 2013 18:11:00 +0000 http://boingboing.net/?p=210953#comment-1646606 chocolatecoveredespressobeans!!! [zig-zat...] chocolatecoveredespressobeans!!! [zig-zat...]

]]> By: Wreckrob8 http://boingboing.net/2013/02/05/how-much-caffeine-is-too-much.html#comment-1646596 Wreckrob8 Tue, 05 Feb 2013 18:05:00 +0000 http://boingboing.net/?p=210953#comment-1646596 I just treat myself to a couple of quadruple espressos on a Sunday now. I don't miss my daily dose at all. I just treat myself to a couple of quadruple espressos on a Sunday now. I don’t miss my daily dose at all.

]]> By: Rich Keller http://boingboing.net/2013/02/05/how-much-caffeine-is-too-much.html#comment-1646563 Rich Keller Tue, 05 Feb 2013 17:49:00 +0000 http://boingboing.net/?p=210953#comment-1646563 I'm trying to cut down on my jitter candy intake. I’m trying to cut down on my jitter candy intake.

]]> By: s2redux http://boingboing.net/2013/02/05/how-much-caffeine-is-too-much.html#comment-1646536 s2redux Tue, 05 Feb 2013 17:32:00 +0000 http://boingboing.net/?p=210953#comment-1646536 <i>Futurama</i> <a href="http://www.youtube.com/watch?v=gILlaMTuOt4" rel="nofollow">did this research</a> in 2003 (or maybe it was 3003). One not-unexpected finding: <a href="http://www.youtube.com/watch?v=C9Ef0ErCU1c" rel="nofollow">100 cups</a> puts you into bullet-time. Futurama did this research in 2003 (or maybe it was 3003). One not-unexpected finding: 100 cups puts you into bullet-time.

]]> By: nmcvaugh http://boingboing.net/2013/02/05/how-much-caffeine-is-too-much.html#comment-1646537 nmcvaugh Tue, 05 Feb 2013 17:32:00 +0000 http://boingboing.net/?p=210953#comment-1646537 But if you can push through that 75 cup barrier: http://www.youtube.com/watch?v=gILlaMTuOt4 You will be able to transcend time itself: http://www.youtube.com/watch?v=C9Ef0ErCU1c Or so I've seen on TV. But if you can push through that 75 cup barrier:

http://www.youtube.com/watch?v=gILlaMTuOt4

You will be able to transcend time itself:

http://www.youtube.com/watch?v=C9Ef0ErCU1c

Or so I’ve seen on TV.

]]> By: Promethean Sky http://boingboing.net/2013/02/05/how-much-caffeine-is-too-much.html#comment-1646522 Promethean Sky Tue, 05 Feb 2013 17:20:00 +0000 http://boingboing.net/?p=210953#comment-1646522 3 cups? In my family that will barely get you alert enough to make another pot. 3 cups? In my family that will barely get you alert enough to make another pot.

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