Title: Drug Half-Life Calculator
Author: Luke Mlsna
Published: <strong>August 12, 2012</strong>
Last modified: January 1, 2013

---

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This plugin **hasn’t been tested with the latest 3 major releases of WordPress**.
It may no longer be maintained or supported and may have compatibility issues when
used with more recent versions of WordPress.

![](https://s.w.org/plugins/geopattern-icon/drugsdb-half-life-calculator.svg)

# Drug Half-Life Calculator

 By [Luke Mlsna](https://profiles.wordpress.org/bitacre/)

[Download](https://downloads.wordpress.org/plugin/drugsdb-half-life-calculator.1.1.zip)

 * [Details](https://wordpress.org/plugins/drugsdb-half-life-calculator/#description)
 * [Reviews](https://wordpress.org/plugins/drugsdb-half-life-calculator/#reviews)
 *  [Installation](https://wordpress.org/plugins/drugsdb-half-life-calculator/#installation)
 * [Development](https://wordpress.org/plugins/drugsdb-half-life-calculator/#developers)

 [Support](https://wordpress.org/support/plugin/drugsdb-half-life-calculator/)

## Description

This plugin allows you to add a widget to your sidebar or shortcode to a page or
post that displays a simple drug half life calculator. The calculator outputs the
concentration of the drug that will remain in your system over a period of time.
The plugin accepts two values: half-life and dosage. You can find the half life 
of various drugs and medications at [Drugsdb.com](http://www.drugsdb.com/).

To see a live example, visit: [http://www.drugsdb.com/resources/drug-half-life-calculator/](http://www.drugsdb.com/resources/drug-half-life-calculator/)

Use the shortcode `[halflife]` to display it on posts or pages or add it as a sidebar
widget.

### Support

 * [plugins@shinraholdings.com](https://wordpress.org/plugins/drugsdb-half-life-calculator/plugins@shinraholdings.com?output_format=md)

## Installation

 1. Download the latest zip file and extract the `drugsdb-half-life-calc` directory.
 2. Upload this directory inside your `/wp-content/plugins/` directory.
 3. Activate the ‘Drugsdb Half-Life Calculator Widget’ on the ‘Plugins’ menu in WordPress.
 4. Add the widget to your sidebar (using the Appearance > Widgets menu).
 5. Add to a post or page using the shortcode `[halflife]`.

## FAQ

  How do I display in posts or pages?

Use the shortcode `[halflife]` wherever you want it to appear on your post or page.

  Is there a PHP template tag?

Yes, use the code `<?php do_shortcode( 'halflife' ); ?>` anywhere in your theme 
to display the calculator.

  How do I remove the attribution in the Widget?

Check the “remove attribution” option on the widget admin.

  How do I remove the attribution in the shortcode?

Add the attribute `remove_attrib="yes"`, so the full shortcode would be ‘[halflife
remove_attrib=”yes”]`.

  Can I change the title?

Yes, using the widget admin. The shortcode does not print a title so you may simple
type a title above the shortcode.

## Reviews

There are no reviews for this plugin.

## Contributors & Developers

“Drug Half-Life Calculator” is open source software. The following people have contributed
to this plugin.

Contributors

 *   [ Luke Mlsna ](https://profiles.wordpress.org/bitacre/)
 *   [ drugsdb ](https://profiles.wordpress.org/drugsdb/)

[Translate “Drug Half-Life Calculator” into your language.](https://translate.wordpress.org/projects/wp-plugins/drugsdb-half-life-calculator)

### Interested in development?

[Browse the code](https://plugins.trac.wordpress.org/browser/drugsdb-half-life-calculator/),
check out the [SVN repository](https://plugins.svn.wordpress.org/drugsdb-half-life-calculator/),
or subscribe to the [development log](https://plugins.trac.wordpress.org/log/drugsdb-half-life-calculator/)
by [RSS](https://plugins.trac.wordpress.org/log/drugsdb-half-life-calculator/?limit=100&mode=stop_on_copy&format=rss).

## Changelog

#### 1.1

 * Removes the link attribution.

#### 1.0

 * First release version.

## Meta

 *  Version **1.1**
 *  Last updated **14 years ago**
 *  Active installations **10+**
 *  WordPress version ** 2.8 or higher **
 *  Tested up to **3.5.2**
 * Tags
 * [calculator](https://wordpress.org/plugins/tags/calculator/)[drugs](https://wordpress.org/plugins/tags/drugs/)
   [half-life](https://wordpress.org/plugins/tags/half-life/)[prescription](https://wordpress.org/plugins/tags/prescription/)
   [widget](https://wordpress.org/plugins/tags/widget/)
 *  [Advanced View](https://wordpress.org/plugins/drugsdb-half-life-calculator/advanced/)

## Ratings

No reviews have been submitted yet.

[Your review](https://wordpress.org/support/plugin/drugsdb-half-life-calculator/reviews/#new-post)

[See all reviews](https://wordpress.org/support/plugin/drugsdb-half-life-calculator/reviews/)

## Contributors

 *   [ Luke Mlsna ](https://profiles.wordpress.org/bitacre/)
 *   [ drugsdb ](https://profiles.wordpress.org/drugsdb/)

## Support

Got something to say? Need help?

 [View support forum](https://wordpress.org/support/plugin/drugsdb-half-life-calculator/)

## Donate

Would you like to support the advancement of this plugin?

 [ Donate to this plugin ](http://www.drugsdb.com)