diff --git a/lib/openfoodfacts.dart b/lib/openfoodfacts.dart
index 433d798e83..c05e07ec66 100644
--- a/lib/openfoodfacts.dart
+++ b/lib/openfoodfacts.dart
@@ -20,6 +20,7 @@ import 'package:openfoodfacts/model/TaxonomyLabel.dart';
 import 'package:openfoodfacts/model/TaxonomyLanguage.dart';
 import 'package:openfoodfacts/model/TaxonomyPackaging.dart';
 import 'package:openfoodfacts/utils/AbstractQueryConfiguration.dart';
+import 'package:openfoodfacts/utils/AddableProductFields.dart';
 import 'package:openfoodfacts/utils/CountryHelper.dart';
 import 'package:openfoodfacts/utils/ImageHelper.dart';
 import 'package:openfoodfacts/utils/OcrField.dart';
@@ -131,6 +132,37 @@ class OpenFoodAPIClient {
     return Status.fromApiResponse(response.body);
   }
 
+  /// Add the given product to the database.
+  /// Returns a Status object as result.
+  static Future<Status> addProductFields(
+    final User user,
+    final String barcode,
+    final Map<AddableProductField, String> map, {
+    QueryType? queryType,
+  }) async {
+    if (map.isEmpty) {
+      throw Exception('Please add at least one AddableProductField');
+    }
+
+    final Map<String, String> parameterMap = <String, String>{};
+    parameterMap.addAll(user.toData());
+    parameterMap['code'] = barcode;
+    for (final MapEntry<AddableProductField, String> entry in map.entries) {
+      parameterMap[entry.key.addableKey] = entry.value;
+    }
+
+    final Response response = await HttpHelper().doPostRequest(
+      UriHelper.getPostUri(
+        path: '/cgi/product_jqm2.pl',
+        queryType: queryType,
+      ),
+      parameterMap,
+      user,
+      queryType: queryType,
+    );
+    return Status.fromApiResponse(response.body);
+  }
+
   /// Send one image to the server.
   /// The image will be added to the product specified in the SendImage
   /// Returns a Status object as result.
diff --git a/lib/utils/AddableProductFields.dart b/lib/utils/AddableProductFields.dart
new file mode 100644
index 0000000000..f849a898c1
--- /dev/null
+++ b/lib/utils/AddableProductFields.dart
@@ -0,0 +1,17 @@
+/// Fields of a [Product] that can be simply added.
+enum AddableProductField {
+  BRANDS,
+  STORES,
+  COUNTRIES,
+}
+
+extension AddableProductFieldExtension on AddableProductField {
+  static const Map<AddableProductField, String> _KEYS = {
+    AddableProductField.BRANDS: 'add_brands',
+    AddableProductField.STORES: 'add_stores',
+    AddableProductField.COUNTRIES: 'add_countries',
+  };
+
+  /// Returns the key of the product field
+  String get addableKey => _KEYS[this]!;
+}
diff --git a/test/api_addProductFields_test.dart b/test/api_addProductFields_test.dart
new file mode 100644
index 0000000000..0268c31ed5
--- /dev/null
+++ b/test/api_addProductFields_test.dart
@@ -0,0 +1,114 @@
+import 'package:openfoodfacts/openfoodfacts.dart';
+import 'package:openfoodfacts/utils/AddableProductFields.dart';
+import 'package:openfoodfacts/utils/OpenFoodAPIConfiguration.dart';
+import 'package:openfoodfacts/utils/QueryType.dart';
+import 'package:test/test.dart';
+import 'test_constants.dart';
+
+/// Unit/Integration tests around OpenFoodAPIClient.addProductFields
+void main() {
+  OpenFoodAPIConfiguration.globalQueryType = QueryType.TEST;
+
+  group('$OpenFoodAPIClient add product fields', () {
+    const String barcode = '0048151623426';
+    const List<String> additionalValues = <String>['djobi', 'djoba'];
+    const OpenFoodFactsLanguage language = OpenFoodFactsLanguage.ENGLISH;
+    const User user = TestConstants.TEST_USER;
+    const Timeout timeout = Timeout(Duration(seconds: 90));
+
+    void _checkStatus(final Status status) {
+      expect(status.status, 1);
+      expect(status.statusVerbose, 'fields saved');
+    }
+
+    String? _getValue(
+      final AddableProductField field,
+      final Product product,
+    ) {
+      switch (field) {
+        case AddableProductField.BRANDS:
+          return product.brands;
+        case AddableProductField.COUNTRIES:
+          return product.countries;
+        case AddableProductField.STORES:
+          return product.stores;
+      }
+    }
+
+    Future<void> _checkValue(
+      final AddableProductField field,
+      final String expectedValue,
+    ) async {
+      final ProductQueryConfiguration configuration = ProductQueryConfiguration(
+        barcode,
+        language: language,
+        fields: [ProductField.ALL],
+      );
+
+      final ProductResult productResult = await OpenFoodAPIClient.getProduct(
+        configuration,
+        user: user,
+      );
+      expect(productResult.product, isNotNull);
+      final String? actualValue = _getValue(field, productResult.product!);
+      expect(actualValue, equalsIgnoringCase(expectedValue));
+    }
+
+    Future<void> _checkAddableField(
+      final AddableProductField field,
+      final Product initialProduct,
+    ) async {
+      late Status status;
+      late Product product;
+
+      // from scratch
+      product = initialProduct;
+      status = await OpenFoodAPIClient.saveProduct(user, product);
+      _checkStatus(status);
+
+      // cumulative list
+      String expectedValue = _getValue(field, product)!;
+
+      await _checkValue(field, expectedValue);
+
+      for (final String additionalValue in additionalValues) {
+        expectedValue += ', $additionalValue';
+
+        status = await OpenFoodAPIClient.addProductFields(
+          user,
+          barcode,
+          <AddableProductField, String>{field: additionalValue},
+        );
+        _checkStatus(status);
+
+        await _checkValue(field, expectedValue);
+      }
+    }
+
+    test(
+        'add brand',
+        () async => _checkAddableField(
+              AddableProductField.BRANDS,
+              Product(
+                  barcode: barcode, lang: language, brands: 'Golden Cookies'),
+            ),
+        timeout: timeout);
+
+    test(
+        'add country',
+        () async => _checkAddableField(
+              AddableProductField.COUNTRIES,
+              Product(
+                  barcode: barcode, lang: language, countries: 'United States'),
+            ),
+        timeout: timeout);
+
+    test(
+        'add stores',
+        () async => _checkAddableField(
+              AddableProductField.STORES,
+              Product(barcode: barcode, lang: language, stores: 'Intermarché'),
+            ),
+        timeout: timeout);
+  });
+}