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A patient package insert or medication guide is a document provided along with a prescription medication to provide additional information about that drug. By providing this information to the patient there is an expectation of improved therapeutic outcomes by improving compliance and helping the patient to avoid some potential errors from medication misuse.

The Food and Drug Administration (FDA) determines the requirements for patient package inserts. Package inserts follow a standard format for every medication and include the same types of information. Different manufacturers may have different titles for their sections, however, to make them easier for the average person to read and comprehend—for example, instead of "Contraindications" the section may be headed, "Who should not take this medication?"

The first thing listed is usually the brand name and generic name of the product. The other sections are as follows:

*Clinical pharmacology - tells how the medicine works in the body, how it is absorbed and eliminated, and what its effects are likely to be at various concentrations. May also contain results of various clinical trials (studies) and/or explanations of the medication's effect on various populations (e.g. children, women, etc.).
*Indications and usage - uses (indications) for which the drug has been FDA-approved (e.g. migraines, seizures, high blood pressure). Physicians legally can and often do prescribe medicines for purposes not listed in this section (so-called "off-label uses").
*Contraindications - lists situations in which the medication should not be used, for example in patients with other medical conditions such as kidney problems or allergies
*Warnings - covers possible serious side effects that may occur
*Precautions - explains how to use the medication safely including physical impairments and drug interactions; for example "Do not drink alcohol while taking this medication" or "Do not take this medication if you are currently taking MAOI inhibitors"
*Adverse reactions - lists all side effects observed in all studies of the drug (as opposed to just the dangerous side effects which are separately listed in "Warnings" section)
*Drug abuse and dependence - provides information regarding whether prolonged use of the medication can cause physical dependence (only included if applicable)
*Overdosage - gives the results of an overdose and provides recommended action in such cases
*Dosage and administration - gives recommended dosage(s); may list more than one for different conditions or different patients (e.g., lower dosages for children)
*How supplied - explains in detail the physical characteristics of the medication including color, shape, markings, etc., and storage information (e.g., "Do not store above 95°")

==See also==
[[Risk evaluation and mitigation strategies]]<br />
[[Medication errors]]<br />
[[Five rights]]<br />
[[MedWatch]]<br />
[[Drug recalls]]<br />
[[Vaccine Adverse Event Reporting System]]<br />
[[Antidote]]<br />
[[Tallman lettering]]<br />
[[High-alert medications]]<br />
[[Barcoding technologies]]<br />
[[Medication safety]]

==References==
#Package insert, Wikipedia, http://en.wikipedia.org/wiki/Patient_package_insert
#Providing Effective Information to Consumers about Prescription Drug Risks and Benefits The Issues Paper, FDA, http://www.fda.gov/downloads/Drugs/NewsEvents/UCM182799.pdf