<p><a href="http://www.drugbank.ca/drugs/DB00201#pharmacology" rel="nofollow">http://www.drugbank.ca/drugs/DB00201#pharmacology</a></p>

<p>No graph, but half life is listed as 3-7 hrs.</p>

CC BY-SA 3.0
2015-06-29T14:20:33.070Z
Thanks for the link to the drug database, I was not aware of that :)
Alex Stone
CC BY-SA 3.0
2015-06-26T18:30:44.757Z
2015-06-26T18:30:44.757Z
user3845377
<p>Most medications approved by the FDA and used in a medical setting have such statistics.  Caffeine is no exception.  Most drug databases have listed pharmacokinetics for caffeine.  Onset is listed as 15 to 45 minutes with peak concentrations as 30 minutes in adults.  Half life for caffeine varies based on a number of factors.  For adults it is listed as 4 to 5 hours, however, studies suggest it is generally less for smokers.  It is much much longer for infants (52 to 96 hours) but generally by nine months of age, those numbers have dropped to similar levels seen in adults.  </p>

CC BY-SA 3.0
2015-05-23T17:03:07.370Z
Is there a source you can link to?
Cascabel
CC BY-SA 3.0
2015-05-24T23:19:05.150Z
Unfortunately, no.  I took that from MicroMedex, which is a subscription based service requiring login.
Suspended User
CC BY-SA 3.0
2015-05-22T17:32:29.063Z
2015-05-22T17:32:29.063Z
Suspended User
<p><a href="http://www.psych.nyu.edu/kuhllab/pdfs/Favila_Kuhl_2014.pdf" rel="nofollow noreferrer" title="Stimulating memory consolidation Serra E Favila &amp; Brice A Kuhl">This might be helpful http://www.psych.nyu.edu/kuhllab/pdfs/Favila_Kuhl_2014.pdf</a></p>

<p>Hope this helps. It is the best thing I can find</p>

<p><a href="http://www.psych.nyu.edu/kuhllab/pdfs/Favila_Kuhl_2014.pdf" rel="nofollow noreferrer" title="Stimulating memory consolidation Serra E Favila &amp; Brice A Kuhl">Research paper: Stimulating memory consolidation (Serra E Favila &amp; Brice A Kuhl)</a></p>

<p>Please note that research study found improvements in memory only at 200-300mg levels administered 2 days before the test:</p>

<p><img src="https://i.sstatic.net/3XLTt.png" alt="enter image description here"></p>

CC BY-SA 3.0
2015-06-27T12:37:03.200Z
Sorry, I had it but now I lost it
Stephan
CC BY-SA 3.0
2015-06-24T19:27:16.600Z
2015-07-04T19:48:46.313Z
2015-07-04T19:48:46.313Z
Stephan
<p>I've long been interested in how long caffeine stays in my body and what are the effects at different concentrations and times. For example, a popular site <a href="https://www.erowid.org/plants/cannabis/cannabis_effects.shtml" rel="noreferrer">erowid has metabolism curves for most illegal drugs</a>, along with side effects. However, it's caffeine entry is mostly anecdotal experiences. </p>

<p>Here's an example of what cannabis metabolic curve looks like: <img src="https://i.sstatic.net/MluJ6.gif" alt="enter image description here"></p>

<p><strong>Is there a similar metabolic curve with onset, total duration, peak, plateau for caffeine?</strong> Does the kind of coffee consumed affect the curve?</p>

<caffeine><ground-coffee>
Is there a "caffeine metabolism curve", understood by general public?
Alex Stone
# Is there a "caffeine metabolism curve", understood by general public?

(Asked by: username_0 on 2015-05-22)

I've long been interested in how long caffeine stays in my body and what are the effects at different concentrations and times. For example, a popular site [erowid has metabolism curves for most illegal drugs](https://www.erowid.org/plants/cannabis/cannabis_effects.shtml), along with side effects. However, it's caffeine entry is mostly anecdotal experiences.

Here's an example of what cannabis metabolic curve looks like: ![enter image description here](https://i.sstatic.net/MluJ6.gif)

**Is there a similar metabolic curve with onset, total duration, peak, plateau for caffeine?** Does the kind of coffee consumed affect the curve?

**Tags:** caffeine, ground-coffee


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## 3 answers

### Answer by username_4 on 2015-06-24. Score: 5 | Accepted answer

[This might be helpful http://www.psych.nyu.edu/kuhllab/pdfs/Favila\_Kuhl\_2014.pdf](http://www.psych.nyu.edu/kuhllab/pdfs/Favila_Kuhl_2014.pdf "Stimulating memory consolidation Serra E Favila & Brice A Kuhl")

Hope this helps. It is the best thing I can find

[Research paper: Stimulating memory consolidation (Serra E Favila & Brice A Kuhl)](http://www.psych.nyu.edu/kuhllab/pdfs/Favila_Kuhl_2014.pdf "Stimulating memory consolidation Serra E Favila & Brice A Kuhl")

Please note that research study found improvements in memory only at 200-300mg levels administered 2 days before the test:

![enter image description here](https://i.sstatic.net/3XLTt.png)

> **Comments:**
> **username_4**: Sorry, I had it but now I lost it  

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### Answer by username_2 on 2015-05-22. Score: 6

Most medications approved by the FDA and used in a medical setting have such statistics. Caffeine is no exception. Most drug databases have listed pharmacokinetics for caffeine. Onset is listed as 15 to 45 minutes with peak concentrations as 30 minutes in adults. Half life for caffeine varies based on a number of factors. For adults it is listed as 4 to 5 hours, however, studies suggest it is generally less for smokers. It is much much longer for infants (52 to 96 hours) but generally by nine months of age, those numbers have dropped to similar levels seen in adults.

> **Comments:**
> **username_3**: Is there a source you can link to?  
> **username_2**: Unfortunately, no.  I took that from MicroMedex, which is a subscription based service requiring login.  

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### Answer by username_1 on 2015-06-26. Score: 3

<http://www.drugbank.ca/drugs/DB00201#pharmacology>

No graph, but half life is listed as 3-7 hrs.

> **Comments:**
> **username_0**: Thanks for the link to the drug database, I was not aware of that :)  

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