drug to drug intraction

lib/screens/prescription/add_prescription_form.dart

@@ -1001,6 +1001,7 @@ class _PrescriptionFormWidgetState extends State<PrescriptionFormWidget> {
   getPriscriptionforDrug(List<PrescriptionModel> prescriptionList) {
     var prescriptionDetails = [];
     prescriptionList[0].entityList.forEach((element) {
+      if (element.mediSpanGPICode != null) {
         prescriptionDetails.add({
           'DrugId': element.mediSpanGPICode,
           'DrugName': element.medicationName,
@@ -1012,7 +1013,9 @@ class _PrescriptionFormWidgetState extends State<PrescriptionFormWidget> {
           'RouteID': element.routeID,
           'IsScreen': element.isSIG
         });
+      }
     });
+    if (_selectedMedication.mediSpanGPICode != null) {
       prescriptionDetails.add({
         'DrugId': _selectedMedication.mediSpanGPICode,
         'DrugName': _selectedMedication.description,
@@ -1024,6 +1027,7 @@ class _PrescriptionFormWidgetState extends State<PrescriptionFormWidget> {
         'RouteID': route['parameterCode'].toString(),
         'IsScreen': true
       });
+    }
     return prescriptionDetails;
   }
 }