Legacy eRx Drug-Drug, Drug-Allergy Interaction Checks

In Legacy eRx (NewCrop eRX) comprehensive version, drug-drug and drug-allergy interaction checks are automated.

Offices must contact Open Dental to turn on this feature.


If the NewCrop eRX preference Only Show Severe/Contraindicated Warnings is checked, warnings for mild and moderate interactions will be suppressed. To enable or disable this preference:

  1. Click on the NewCrop eRX Admin tab.
  2. Click Account/Prescriber Settings in the Account Configuration area.
  3. Check or uncheck Only Show Severe/Contraindicated Warnings.
    • Checked: Only severe/contraindicated interaction alerts will appear.
    • Unchecked: All interaction alerts will appear.
    • The box can only be checked or unchecked if the prescriber is logged on.

At this time, the patient's allergy and medication list in Open Dental is not passed to Legacy eRx. If an allergy or medication is not listed, see Legacy eRx Allergies or Legacy eRx Medications.

Drug-Allergy Interactions

When prescribing or adding drugs in NewCrop eRX, the system automatically checks for allergies. If a drug allergy exists, the following alert will appear.

To cancel the prescription or adding the medication click Cancel.

To proceed with prescribing or adding the medication, click Continue.

Drug-Drug Interactions

When prescribing a medication, drug-drug interaction warnings will appear in the Transmit Rx window.