## getMedicationOrderIframeUrl() function
Reads the medication-order iframe launch URL from MedicationRequest extensions.

**Signature:**
```typescript
export declare function getMedicationOrderIframeUrl(medicationRequest: MedicationRequest, ext: MedicationOrderExtensions): string | undefined;
```

## Parameters
| Parameter           | Type                        | Description                      |
|---------------------|-----------------------------|----------------------------------|
| medicationRequest   | MedicationRequest           | MR to read.                     |
| ext                 | [MedicationOrderExtensions](/content/docs/sdk/core.medicationorderextensions) | Vendor extension URL configuration. |

**Returns:**
string | undefined

The launch URL, if present.