diff --git a/lib/helpers/groups_helper.dart b/lib/helpers/groups_helper.dart
index b07c16b..3040e04 100644
--- a/lib/helpers/groups_helper.dart
+++ b/lib/helpers/groups_helper.dart
@@ -54,6 +54,17 @@ class GroupsHelper {
     return list;
   }
 
+  /// Get a list of groups from the server. In case of error, this method throws
+  /// an exception
+  Future<GroupsList> getListOrThrow(Set<int> groups,
+      {bool force = false}) async {
+    final list = await getList(groups, force: force);
+
+    if (list == null) throw Exception("Could not get the list of groups!");
+
+    return list;
+  }
+
   /// Get a list of groups from the server
   Future<GroupsList> getList(Set<int> groups, {bool force = false}) async {
     final list = GroupsList();
diff --git a/lib/lists/notifications_list.dart b/lib/lists/notifications_list.dart
index f0ef100..159b332 100644
--- a/lib/lists/notifications_list.dart
+++ b/lib/lists/notifications_list.dart
@@ -8,21 +8,19 @@ import 'package:comunic/models/notification.dart';
 class NotificationsList extends AbstractList<Notification> {
   /// Get the ID of all the users related to the notifications
   /// included in the list
-  List<int> get usersIds {
-    final list = List<int>();
+  Set<int> get usersIds {
+    final list = Set<int>();
 
     forEach((n) {
-      if (!list.contains(n.fromUser)) list.add(n.fromUser);
+      list.add(n.fromUser);
 
       if (n.onElemType == NotificationElementType.FRIENDSHIP_REQUEST ||
-          n.onElemType == NotificationElementType.USER_PAGE) {
-        if (!list.contains(n.onElemId)) list.add(n.onElemId);
-      }
+          n.onElemType == NotificationElementType.USER_PAGE)
+        list.add(n.onElemId);
 
       if (n.fromContainerType == NotificationElementType.FRIENDSHIP_REQUEST ||
-          n.fromContainerType == NotificationElementType.USER_PAGE) {
-        if (!list.contains(n.fromContainerId)) list.add(n.fromContainerId);
-      }
+          n.fromContainerType == NotificationElementType.USER_PAGE)
+        list.add(n.fromContainerId);
     });
 
     return list;
@@ -30,18 +28,18 @@ class NotificationsList extends AbstractList<Notification> {
 
   /// Get the ID of all the groups related to the notifications
   /// included in the list
-  List<int> get groupsIds {
-    final list = List<int>();
+  Set<int> get groupsIds {
+    final list = Set<int>();
 
     forEach((n) {
-      if (n.onElemType == NotificationElementType.GROUP_PAGE &&
-          !list.contains(n.onElemId)) list.add(n.onElemId);
+      if (n.onElemType == NotificationElementType.GROUP_PAGE)
+        list.add(n.onElemId);
 
-      if (n.fromContainerType == NotificationElementType.GROUP_PAGE &&
-          !list.contains(n.fromContainerId)) list.add(n.fromContainerId);
+      if (n.fromContainerType == NotificationElementType.GROUP_PAGE)
+        list.add(n.fromContainerId);
 
-      if (n.onElemType == NotificationElementType.GROUP_MEMBERSHIP &&
-          !list.contains(n.onElemId)) list.add(n.onElemId);
+      if (n.onElemType == NotificationElementType.GROUP_MEMBERSHIP)
+        list.add(n.onElemId);
     });
 
     return list;
diff --git a/lib/ui/screens/notifications_screen.dart b/lib/ui/screens/notifications_screen.dart
index 40386c0..a2708a3 100644
--- a/lib/ui/screens/notifications_screen.dart
+++ b/lib/ui/screens/notifications_screen.dart
@@ -1,4 +1,9 @@
+import 'package:comunic/helpers/groups_helper.dart';
+import 'package:comunic/helpers/notifications_helper.dart';
+import 'package:comunic/helpers/users_helper.dart';
+import 'package:comunic/lists/groups_list.dart';
 import 'package:comunic/lists/notifications_list.dart';
+import 'package:comunic/lists/users_list.dart';
 import 'package:comunic/utils/intl_utils.dart';
 import 'package:comunic/utils/ui_utils.dart';
 import 'package:flutter/material.dart';
@@ -16,6 +21,8 @@ class NotificationsScreen extends StatefulWidget {
 
 class _NotificationsScreenState extends State<NotificationsScreen> {
   NotificationsList _list;
+  UsersList _users;
+  GroupsList _groups;
   _Status _status = _Status.LOADING;
 
   void setStatus(_Status s) => setState(() => _status = s);
@@ -23,6 +30,31 @@ class _NotificationsScreenState extends State<NotificationsScreen> {
   Future<void> _loadList() async {
     setStatus(_Status.LOADING);
 
+    try {
+      final list = await NotificationsHelper().getUnread();
+
+      final users = await UsersHelper().getListWithThrow(list.usersIds);
+
+      final groups = await GroupsHelper().getListOrThrow(list.groupsIds);
+
+      setState(() {
+        _list = list;
+        _users = users;
+        _groups = groups;
+      });
+    } on Exception catch (e) {
+      print("Exception while getting the list of notifications!");
+      print(e);
+    } on Error catch (e) {
+      print("Error while getting the list of notifications!");
+      print(e.stackTrace);
+    }
+  }
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+    _loadList();
   }
 
   @override