diff --git a/ApiDocGenerator.php b/ApiDocGenerator.php
index 894c54f..e905f41 100644
--- a/ApiDocGenerator.php
+++ b/ApiDocGenerator.php
@@ -16,6 +16,7 @@ use gossi\swagger\Swagger;
 
 class ApiDocGenerator
 {
+    private $swagger;
     private $extractors;
 
     /**
@@ -31,11 +32,15 @@ class ApiDocGenerator
      */
     public function extract()
     {
-        $swagger = new Swagger();
-        foreach ($this->extractors as $extractor) {
-            $extractor->extractIn($swagger);
+        if (null !== $this->swagger) {
+            return $this->swagger;
         }
 
-        return $swagger;
+        $this->swagger = new Swagger();
+        foreach ($this->extractors as $extractor) {
+            $extractor->extractIn($this->swagger);
+        }
+
+        return $this->swagger;
     }
 }
diff --git a/DependencyInjection/EXSystApiDocExtension.php b/DependencyInjection/EXSystApiDocExtension.php
index 0c8ffde..ff5bd0c 100644
--- a/DependencyInjection/EXSystApiDocExtension.php
+++ b/DependencyInjection/EXSystApiDocExtension.php
@@ -11,6 +11,8 @@
 
 namespace EXSyst\Bundle\ApiDocBundle\DependencyInjection;
 
+use Nelmio\ApiDocBundle\Annotation\ApiDoc;
+use phpDocumentor\Reflection\DocBlockFactory;
 use Symfony\Component\Config\FileLocator;
 use Symfony\Component\HttpKernel\DependencyInjection\Extension;
 use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
@@ -35,5 +37,13 @@ class EXSystApiDocExtension extends Extension
         $loader = new XmlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
 
         $loader->load('services.xml');
+
+        // Removes useless services
+        if (!class_exists(ApiDoc::class)) {
+            $container->removeDefinition('exsyst_api_doc.routing_extractors.nelmio_annotation');
+        }
+        if (!class_exists(DocBlockFactory::class)) {
+            $container->removeDefinition('exsyst_api_doc.routing_extractors.php_doc');            
+        }
     }
 }
diff --git a/Extractor/Routing/NelmioAnnotationExtractor.php b/Extractor/Routing/NelmioAnnotationExtractor.php
index c8368de..a1a9bc8 100644
--- a/Extractor/Routing/NelmioAnnotationExtractor.php
+++ b/Extractor/Routing/NelmioAnnotationExtractor.php
@@ -22,20 +22,14 @@ class NelmioAnnotationExtractor implements RouteExtractorInterface
     use RouteExtractorTrait;
 
     private $annotationReader;
-    private $nelmioLoaded;
 
     public function __construct(Reader $annotationReader)
     {
         $this->annotationReader = $annotationReader;
-        $this->nelmioLoaded = class_exists(ApiDoc::class);
     }
 
     public function extractIn(Swagger $api, Route $route, \ReflectionMethod $reflectionMethod)
     {
-        if (!$this->nelmioLoaded) {
-            return;
-        }
-
         $annotation = $this->annotationReader->getMethodAnnotation($reflectionMethod, ApiDoc::class);
         if (null === $annotation) {
             return;
@@ -43,14 +37,12 @@ class NelmioAnnotationExtractor implements RouteExtractorInterface
 
         // some fields aren't available otherwise
         $annotationArray = $annotation->toArray();
-        
+
         foreach ($this->getOperations($api, $route) as $operation) {
             if ($annotation->getDescription()) {
                 $operation->setDescription($annotation->getDescription());
             }
-            if (null !== $annotation->getDeprecated()) {
-                $operation->setDeprecated($operation->getDeprecated || $annotation->getDeprecated());
-            }
+            $operation->setDeprecated($operation->getDeprecated() || $annotation->getDeprecated());
 
             // Request parameters
             foreach ($annotation->getParameters() as $name => $configuration) {
diff --git a/Extractor/Routing/PhpDocExtractor.php b/Extractor/Routing/PhpDocExtractor.php
new file mode 100644
index 0000000..8ab0f8b
--- /dev/null
+++ b/Extractor/Routing/PhpDocExtractor.php
@@ -0,0 +1,61 @@
+<?php
+
+/*
+ * This file is part of the ApiDocBundle package.
+ *
+ * (c) EXSyst
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace EXSyst\Bundle\ApiDocBundle\Extractor\Routing;
+
+use phpDocumentor\Reflection\DocBlockFactory;
+use phpDocumentor\Reflection\DocBlockFactoryInterface;
+use Doctrine\Common\Annotations\Reader;
+use gossi\swagger\Parameter;
+use gossi\swagger\Swagger;
+use Nelmio\ApiDocBundle\Annotation\ApiDoc;
+use Symfony\Component\Routing\Route;
+
+class PhpDocExtractor implements RouteExtractorInterface
+{
+    use RouteExtractorTrait;
+
+    private $docBlockFactory;
+
+    public function __construct(DocBlockFactoryInterface $docBlockFactory = null)
+    {
+        if (null === $docBlockFactory) {
+            $docBlockFactory = DocBlockFactory::createInstance();
+        }
+        $this->docBlockFactory = $docBlockFactory;
+    }
+
+    public function extractIn(Swagger $api, Route $route, \ReflectionMethod $reflectionMethod)
+    {
+        $classDocBlock = null;
+        $docBlock = null;
+
+        try {
+            $classDocBlock = $this->docBlockFactory->create($reflectionMethod->getDeclaringClass());
+        } catch (\Exception $e) {
+        }
+        try {
+            $docBlock = $this->docBlockFactory->create($reflectionMethod);
+        } catch (\Exception $e) {
+        }
+
+        foreach ($this->getOperations($api, $route) as $operation) {
+            if (null !== $docBlock) {
+                $operation->setSummary($docBlock->getSummary());
+                $operation->setDescription((string) $docBlock->getDescription());
+                $operation->setDeprecated($operation->getDeprecated() || $docBlock->hasTag('deprecated'));
+            }
+            if (null !== $classDocBlock) {
+                $operation->setDeprecated($operation->getDeprecated() || $classDocBlock->hasTag('deprecated'));
+            }
+        }
+    }
+}
diff --git a/Resources/config/services.xml b/Resources/config/services.xml
index a31d27e..90f06de 100644
--- a/Resources/config/services.xml
+++ b/Resources/config/services.xml
@@ -19,13 +19,17 @@
 
         <!-- Routing Extractors -->
         <service id="exsyst_api_doc.routing_extractors.route_metadata" class="EXSyst\Bundle\ApiDocBundle\Extractor\Routing\RouteMetadataExtractor" public="false">
-            <tag name="exsyst_api_doc.routing_extractor" />
+            <tag name="exsyst_api_doc.routing_extractor" priority="-50" />
+        </service>
+
+        <service id="exsyst_api_doc.routing_extractors.php_doc" class="EXSyst\Bundle\ApiDocBundle\Extractor\Routing\PhpDocExtractor" public="false">
+            <tag name="exsyst_api_doc.routing_extractor" priority="-70" />
         </service>
 
         <service id="exsyst_api_doc.routing_extractors.nelmio_annotation" class="EXSyst\Bundle\ApiDocBundle\Extractor\Routing\NelmioAnnotationExtractor" public="false">
             <argument type="service" id="annotation_reader" />
 
-            <tag name="exsyst_api_doc.routing_extractor" />
+            <tag name="exsyst_api_doc.routing_extractor" priority="-100" />
         </service>
     </services>
 
diff --git a/Tests/Functional/Controller/ApiController.php b/Tests/Functional/Controller/ApiController.php
index c4ae143..47b7b77 100644
--- a/Tests/Functional/Controller/ApiController.php
+++ b/Tests/Functional/Controller/ApiController.php
@@ -11,6 +11,7 @@
 
 namespace EXSyst\Bundle\ApiDocBundle\Tests\Functional\Controller;
 
+use Nelmio\ApiDocBundle\Annotation\ApiDoc;
 use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
 
 class ApiController
@@ -21,4 +22,26 @@ class ApiController
     public function userAction()
     {
     }
+
+    /**
+     * @Route("/nelmio", methods={"POST"})
+     * @ApiDoc(
+     *   description="This action is described."
+     * )
+     */
+    public function nelmioAction()
+    {
+    }
+
+    /**
+     * This action is deprecated.
+     *
+     * Please do not use this action.
+     *
+     * @Route("/deprecated", methods={"GET"})
+     * @deprecated
+     */
+    public function deprecatedAction()
+    {
+    }
 }
diff --git a/Tests/Functional/FunctionalTest.php b/Tests/Functional/FunctionalTest.php
index b5dd446..cda0ba8 100644
--- a/Tests/Functional/FunctionalTest.php
+++ b/Tests/Functional/FunctionalTest.php
@@ -15,18 +15,14 @@ use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
 
 class FunctionalTest extends WebTestCase
 {
-    public function testUserActionApiController()
+    public function testUserAction()
     {
-        $api = $this->getSwaggerDefinition();
-        $paths = $api->getPaths();
-
-        $this->assertTrue($paths->has('/test/{user}'));
-        $action = $paths->get('/test/{user}');
-
-        $this->assertTrue($action->hasOperation('get'));
-        $operation = $action->getOperation('get');
+        $operation = $this->getOperation('/test/{user}', 'get');
 
         $this->assertEquals(['https'], $operation->getSchemes()->toArray());
+        $this->assertEmpty($operation->getSummary());
+        $this->assertEmpty($operation->getDescription());
+        $this->assertFalse($operation->getDeprecated());
 
         $parameters = $operation->getParameters();
         $this->assertTrue($parameters->search('user', 'path'));
@@ -37,10 +33,40 @@ class FunctionalTest extends WebTestCase
         $this->assertEquals('/foo/', $parameter->getFormat());
     }
 
+    public function testNelmioAction()
+    {
+        $operation = $this->getOperation('/nelmio', 'post');
+
+        $this->assertEquals('This action is described.', $operation->getDescription());
+        $this->assertFalse($operation->getDeprecated());
+    }
+
+    public function testDeprecatedAction()
+    {
+        $operation = $this->getOperation('/deprecated', 'get');
+
+        $this->assertEquals('This action is deprecated.', $operation->getSummary());
+        $this->assertEquals('Please do not use this action.', $operation->getDescription());
+        $this->assertTrue($operation->getDeprecated());
+    }
+
     private function getSwaggerDefinition()
     {
         static::createClient();
 
         return static::$kernel->getContainer()->get('exsyst_api_doc.generator')->extract();
     }
+
+    private function getOperation($path, $method)
+    {
+        $api = $this->getSwaggerDefinition();
+        $paths = $api->getPaths();
+
+        $this->assertTrue($paths->has($path));
+        $action = $paths->get($path);
+
+        $this->assertTrue($action->hasOperation($method));
+
+        return $action->getOperation($method);
+    }
 }
diff --git a/composer.json b/composer.json
index 6c29bc1..6cba6c7 100644
--- a/composer.json
+++ b/composer.json
@@ -17,10 +17,13 @@
         "symfony/browser-kit": "~2.8|~3.0",
         "symfony/phpunit-bridge": "^3.2@dev",
         "sensio/framework-extra-bundle": "~3.0",
-        "nelmio/api-doc-bundle": "^2.0"
+        "nelmio/api-doc-bundle": "^2.0",
+        "phpdocumentor/reflection-docblock": "^3.1",
+        "phpunit/phpunit": "^5.4"
     },
     "suggest": {
-        "nelmio/api-doc-bundle": "For using the ApiDoc annotation."
+        "nelmio/api-doc-bundle": "For using the ApiDoc annotation.",
+        "phpdocumentor/reflection-docblock": "For parsing php docs."
     },
     "autoload": {
         "psr-4": {