---
title: Medication Elements (R.305, R.306, R.307, S.208, R.308)
slug: eprescribing/guide/medication-elements-r305-r306-r307-s208-r308
docTags: 
createdAt: 2026-07-09T20:40:20.395Z
---

# Overview

This section holds the application certification requirements located in the [Medication Elements](docId\:l36hVzTe0gNr6xpBkT-6n) section in the guide.

## R.305

**R.305**: The drug name shall be an item that is currently available for dispensing. If there are active NDCs available, an inactive/obsolete NDC shall not be used. Customers are expected to work with their drug compendia vendor to satisfy this requirement.

## R.306

**R.306**: If the drug description for single medications as well as compounds exceeds the length of the DrugDescription field, the prescription shall not be sent electronically.

## R.307

**R.307**: When entering a prescription that has a free text DrugDescription and the prescription contains a controlled substance, EPCS requirements shall be followed.

## S.208

**S.208:** Codified values within a message shall not conflict with the related textual concept.

## R.308

**R.308:** When sending a compound with one or more controlled substance ingredients, the message shall contain one of the following:

- either the CompoundIngredient/DEASchedule for each controlled substance in the CompoundIngredient element
- or the DEA schedule of the most restrictive ingredient in the DrugCoded/DEASchedule or NonDrugCoded/DEASchedule element.