This resource is primarily used for the identification and definition of a medication. It covers the ingredients and the packaging for a medication.

A code (or set of codes) that specify this medication, or a textual description if no code is available. Usage note: This could be a standard medication code such as a code from RxNorm, SNOMED CT, IDMP etc. It could also be a national or local formulary code, optionally with translations to other code systems.

Depending on the context of use, the code that was actually selected by the user (prescriber, dispenser, etc.) should be marked as "primary". Other codes can only be literal translations to alternative code systems, or codes at a lower level of granularity (e.g. a generic code for a vendor-specific primary one).

Set to true if the item is attributable to a specific manufacturer.

Describes the details of the manufacturer.

Information that only applies to products (not packages).

Describes the form of the item. Powder; tablets; capsule.

When Medication is referenced from MedicationRequest, this is the ordered form. When Medication is referenced within MedicationDispense, this is the dispensed form. When Medication is referenced within MedicationAdministration, this is administered form.

Identifies a particular constituent of interest in the product.

The ingredients need not be a complete list; usually only active ingredients are listed.

The actual ingredient - either a substance (simple ingredient) or another medication.

Specifies how many (or how much) of the items there are in this Medication. For example, 250 mg per tablet. This is expressed as a ratio where the numerator is 250mg and the denominator is 1 tablet.

Information about a group of medication produced or packaged from one production run.

The assigned lot number of a batch of the specified product.

When this specific batch of product will expire.

Information that only applies to packages (not products).

The kind of container that this package comes as.

A set of components that go to make up the described item.

Identifies one of the items in the package.

The amount of the product that is in the package.