DrugsDB Half Life Calculator

This plugin was developed for, and is wholly licensed to DrugsDB.com.

Plugin URI: http://shinraholdings.com/plugins/drugsdb-half-life-calc Contributors: drugsdb, bitacre
Donate link: http://www.drugsdb.com
Tags: half-life, calculator, widget, drugs, prescription, database
Requires at least: 2.8
Tested up to: 3.5
Stable tag: 1.1

A simple calculator to get the known half-life for medications you're taking.


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.

To see a live example, visit: 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.


  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].

Frequently Asked Questions

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.


Plugin README Parser: Could not find screenshot-1 image file



  • Removes the link attribution.


  • First release version.

Upgrade Notice


Optional upgrade, removes the link attribution to DrugsDB.com


First release version, nothing to upgrade.

One Thought on “DrugsDB Half Life Calculator

  1. Hi, the calculator does not seem to function…any ideas? I have tried both the shortcode and the widget on a fresh WordPress install running Atahualpa Theme, and WP 3.81

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