Democratic Underground Latest Greatest Lobby Journals Search Options Help Login

How long does it take for caffeine to start working in your body?

Printer-friendly format Printer-friendly format
Printer-friendly format Email this thread to a friend
Printer-friendly format Bookmark this thread
This topic is archived.
Home » Discuss » The DU Lounge Donate to DU
stpalm Donating Member (734 posts) Send PM | Profile | Ignore Thu Mar-31-05 07:48 AM
Original message
How long does it take for caffeine to start working in your body?

Lets say I drink two cans of coca-cola in 10 or so minutes. how long will it take for caffiene's effects to take hold?
Printer Friendly | Permalink |  | Top
Cannikin Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Mar-31-05 07:49 AM
Response to Original message
1. Not long at all..but now I have to look it up.
Edited on Thu Mar-31-05 07:58 AM by Cannikin
Typical drip-brewed coffee contains 100 mg per 6-ounce cup. If you are buying your coffee at Starbucks or a convenience store or drinking it at home or the office out of a mug or a commuter's cup, you are consuming it in 12-, 14- or 20-ounce containers. You can calculate the number of milligrams based on your normal serving size.

Typical brewed tea contains 70 mg per 6-ounce cup.

Typical colas (Coke, Pepsi, Mountain Dew, etc.) contain 50 mg per 12-ounce can. Things like Jolt contain 70 mg per 12-ounce can.

Typical milk chocolate contains 6 mg per ounce.

Anacin contains 32 mg per tablet. No-doz contains 100 mg per tablet. Vivarin and Dexatrim contain 200 mg per tablet.

The half-life of caffeine in your body is about 6 hours. That means that if you consume a big cup of coffee with 200 mg of caffeine in it at 3:00 PM, by 9:00 PM about 100 mg of that caffeine is still in your system.

What is Caffeine?
Caffeine is known medically as trimethylxanthine, and the chemical formula is C8H10N4O2 (see Erowid: Caffeine Chemistry for an image of the molecular structure). When isolated in pure form, caffeine is a white crystalline powder that tastes very bitter. The chief source of pure caffeine is the process of decaffeinating coffee and tea.
Medically, caffeine is useful as a cardiac stimulant and also as a mild diuretic (it increases urine production). Recreationally, it is used to provide a "boost of energy" or a feeling of heightened alertness. It's often used to stay awake longer -- college students and drivers use it to stay awake late into the night. Many people feel as though they "cannot function" in the morning without a cup of coffee to provide caffeine and the boost it gives them.

Caffeine is an addictive drug. Among its many actions, it operates using the same mechanisms that amphetamines, cocaine, and heroin use to stimulate the brain. On a spectrum, caffeine's effects are more mild than amphetamines, cocaine and heroin, but it is manipulating the same channels, and that is one of the things that gives caffeine its addictive qualities. If you feel like you cannot function without it and must consume it every day, then you are addicted to caffeine.

all that BS and I still cant find an answer to your question.
Printer Friendly | Permalink |  | Top
tjwmason Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Mar-31-05 07:52 AM
Response to Reply #1
2. Surely it varies
I can feel the first coffee of the day start to enliven me before I even finish it.
Printer Friendly | Permalink |  | Top
Dogmudgeon Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Mar-31-05 08:08 AM
Response to Reply #1
5. What it does
It's not just all amphetamine-like action; caffeine also speeds up the ATP-ADP energy metabolism cycle within the cells.

Printer Friendly | Permalink |  | Top
bowens43 Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Mar-31-05 08:05 AM
Response to Original message
3. It starts working when I am within 3 feet of it.
Printer Friendly | Permalink |  | Top
papau Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Mar-31-05 08:07 AM
Response to Original message
4. most drugs have a 20 minute start time - the sugar may be faster - and
orange juice hits me in a few minutes.

I react badly to caffiene in many ways - one of which is it makes me very tired later in the day.
Printer Friendly | Permalink |  | Top
DU AdBot (1000+ posts) Click to send private message to this author Click to view 
this author's profile Click to add 
this author to your buddy list Click to add 
this author to your Ignore list Sun Sep 24th 2017, 12:24 AM
Response to Original message
Advertisements [?]

Home » Discuss » The DU Lounge Donate to DU

Powered by DCForum+ Version 1.1 Copyright 1997-2002
Software has been extensively modified by the DU administrators

Important Notices: By participating on this discussion board, visitors agree to abide by the rules outlined on our Rules page. Messages posted on the Democratic Underground Discussion Forums are the opinions of the individuals who post them, and do not necessarily represent the opinions of Democratic Underground, LLC.

Home  |  Discussion Forums  |  Journals |  Store  |  Donate

About DU  |  Contact Us  |  Privacy Policy

Got a message for Democratic Underground? Click here to send us a message.

© 2001 - 2011 Democratic Underground, LLC