diff --git a/src/main/java/de/epiceric/shopchest/config/Regex.java b/src/main/java/de/epiceric/shopchest/config/Regex.java
index 3d5abfd..5f523f3 100644
--- a/src/main/java/de/epiceric/shopchest/config/Regex.java
+++ b/src/main/java/de/epiceric/shopchest/config/Regex.java
@@ -17,7 +17,8 @@ public enum Regex {
     POTION_EFFECT("%POTION-EFFECT%"),
     MUSIC_TITLE("%MUSIC-TITLE%"),
     PROPERTY("%PROPERTY%"),
-    VALUE("%VALUE%");
+    VALUE("%VALUE%"),
+    EXTENDED("%EXTENDED%");
 
     private String name;
 
diff --git a/src/main/java/de/epiceric/shopchest/language/LanguageUtils.java b/src/main/java/de/epiceric/shopchest/language/LanguageUtils.java
index 9999218..e03664f 100644
--- a/src/main/java/de/epiceric/shopchest/language/LanguageUtils.java
+++ b/src/main/java/de/epiceric/shopchest/language/LanguageUtils.java
@@ -856,13 +856,14 @@ public class LanguageUtils {
         messages.add(new LocalizedMessage(LocalizedMessage.Message.SHOP_INFO_PRODUCT, langConfig.getString("message.shopInfo.product", "&6Product: &e%AMOUNT% x %ITEMNAME%"), Regex.AMOUNT, Regex.ITEM_NAME));
         messages.add(new LocalizedMessage(LocalizedMessage.Message.SHOP_INFO_STOCK, langConfig.getString("message.shopInfo.stock", "&6In Stock: &e%AMOUNT%"), Regex.AMOUNT));
         messages.add(new LocalizedMessage(LocalizedMessage.Message.SHOP_INFO_ENCHANTMENTS, langConfig.getString("message.shopInfo.enchantments", "&6Enchantments: &e%ENCHANTMENT%"), Regex.ENCHANTMENT));
-        messages.add(new LocalizedMessage(LocalizedMessage.Message.SHOP_INFO_POTION_EFFECT, langConfig.getString("message.shopInfo.potion-effect", "&6Potion Effect: &e%POTION-EFFECT%"), Regex.POTION_EFFECT));
+        messages.add(new LocalizedMessage(LocalizedMessage.Message.SHOP_INFO_POTION_EFFECT, langConfig.getString("message.shopInfo.potion-effect", "&6Potion Effect: &e%POTION-EFFECT% %EXTENDED%"), Regex.POTION_EFFECT, Regex.EXTENDED));
         messages.add(new LocalizedMessage(LocalizedMessage.Message.SHOP_INFO_MUSIC_TITLE, langConfig.getString("message.shopInfo.music-disc-title", "&6Music Disc Title: &e%MUSIC-TITLE%"), Regex.MUSIC_TITLE));
         messages.add(new LocalizedMessage(LocalizedMessage.Message.SHOP_INFO_NONE, langConfig.getString("message.shopInfo.none", "&7None")));
         messages.add(new LocalizedMessage(LocalizedMessage.Message.SHOP_INFO_PRICE, langConfig.getString("message.shopInfo.price", "&6Price: Buy: &e%BUY-PRICE%&6 Sell: &e%SELL-PRICE%"), Regex.BUY_PRICE, Regex.SELL_PRICE));
         messages.add(new LocalizedMessage(LocalizedMessage.Message.SHOP_INFO_DISABLED, langConfig.getString("message.shopInfo.disabled", "&7Disabled")));
         messages.add(new LocalizedMessage(LocalizedMessage.Message.SHOP_INFO_NORMAL, langConfig.getString("message.shopInfo.is-normal", "&6Type: &eNormal")));
         messages.add(new LocalizedMessage(LocalizedMessage.Message.SHOP_INFO_ADMIN, langConfig.getString("message.shopInfo.is-admin", "&6Type: &eAdmin")));
+        messages.add(new LocalizedMessage(LocalizedMessage.Message.SHOP_INFO_EXTENDED, langConfig.getString("message.shopInfo.extended", "(Extended)")));
         messages.add(new LocalizedMessage(LocalizedMessage.Message.BUY_SELL_DISABLED, langConfig.getString("message.buy-and-sell-disabled", "&cYou can't create a shop with buying and selling disabled.")));
         messages.add(new LocalizedMessage(LocalizedMessage.Message.BUY_SUCCESS, langConfig.getString("message.buy-success", "&aYou bought &6%AMOUNT% x %ITEMNAME%&a for &6%BUY-PRICE%&a from &6%VENDOR%&a."), Regex.AMOUNT, Regex.ITEM_NAME, Regex.BUY_PRICE, Regex.VENDOR));
         messages.add(new LocalizedMessage(LocalizedMessage.Message.BUY_SUCESS_ADMIN, langConfig.getString("message.buy-success-admin", "&aYou bought &6%AMOUNT% x %ITEMNAME%&a for &6%BUY-PRICE%&a."), Regex.AMOUNT, Regex.ITEM_NAME, Regex.BUY_PRICE));
diff --git a/src/main/java/de/epiceric/shopchest/language/LocalizedMessage.java b/src/main/java/de/epiceric/shopchest/language/LocalizedMessage.java
index 83740e1..4bfee30 100644
--- a/src/main/java/de/epiceric/shopchest/language/LocalizedMessage.java
+++ b/src/main/java/de/epiceric/shopchest/language/LocalizedMessage.java
@@ -60,6 +60,7 @@ public class LocalizedMessage {
         SHOP_INFO_DISABLED,
         SHOP_INFO_NORMAL,
         SHOP_INFO_ADMIN,
+        SHOP_INFO_EXTENDED,
         BUY_SELL_DISABLED,
         BUY_SUCCESS,
         BUY_SUCESS_ADMIN,
diff --git a/src/main/java/de/epiceric/shopchest/listeners/ShopInteractListener.java b/src/main/java/de/epiceric/shopchest/listeners/ShopInteractListener.java
index 9341f79..1f01431 100644
--- a/src/main/java/de/epiceric/shopchest/listeners/ShopInteractListener.java
+++ b/src/main/java/de/epiceric/shopchest/listeners/ShopInteractListener.java
@@ -35,6 +35,8 @@ import org.bukkit.inventory.Inventory;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.PlayerInventory;
 import org.bukkit.inventory.meta.EnchantmentStorageMeta;
+import org.bukkit.inventory.meta.PotionMeta;
+import org.bukkit.potion.Potion;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -331,11 +333,16 @@ public class ShopInteractListener implements Listener {
         String shopType = LanguageUtils.getMessage(shop.getShopType() == ShopType.NORMAL ? LocalizedMessage.Message.SHOP_INFO_NORMAL : LocalizedMessage.Message.SHOP_INFO_ADMIN);
         String stock = LanguageUtils.getMessage(LocalizedMessage.Message.SHOP_INFO_STOCK, new LocalizedMessage.ReplacedRegex(Regex.AMOUNT, String.valueOf(amount)));
 
+        boolean potionExtended = false;
+
         Map<Enchantment, Integer> enchantmentMap;
 
         if (Utils.getMajorVersion() >= 9) {
             if (type == Material.TIPPED_ARROW || type == Material.LINGERING_POTION || type == Material.SPLASH_POTION) {
                 potionEffectString = LanguageUtils.getPotionEffectName(shop.getProduct());
+                PotionMeta potionMeta = (PotionMeta) shop.getProduct().getItemMeta();
+                potionExtended = potionMeta.getBasePotionData().isExtended();
+
                 if (potionEffectString == null)
                     potionEffectString = LanguageUtils.getMessage(LocalizedMessage.Message.SHOP_INFO_NONE);
             }
@@ -343,6 +350,14 @@ public class ShopInteractListener implements Listener {
 
         if (type == Material.POTION) {
             potionEffectString = LanguageUtils.getPotionEffectName(shop.getProduct());
+            if (Utils.getMajorVersion() < 9) {
+                Potion potion = Potion.fromItemStack(shop.getProduct());
+                potionExtended = potion.hasExtendedDuration();
+            } else {
+                PotionMeta potionMeta = (PotionMeta) shop.getProduct().getItemMeta();
+                potionExtended = potionMeta.getBasePotionData().isExtended();
+            }
+
             if (potionEffectString == null)
                 potionEffectString = LanguageUtils.getMessage(LocalizedMessage.Message.SHOP_INFO_NONE);
         }
@@ -374,7 +389,8 @@ public class ShopInteractListener implements Listener {
         if (enchantmentString.length() > 0)
             executor.sendMessage(LanguageUtils.getMessage(LocalizedMessage.Message.SHOP_INFO_ENCHANTMENTS, new LocalizedMessage.ReplacedRegex(Regex.ENCHANTMENT, enchantmentString)));
         if (potionEffectString.length() > 0)
-            executor.sendMessage(LanguageUtils.getMessage(LocalizedMessage.Message.SHOP_INFO_POTION_EFFECT, new LocalizedMessage.ReplacedRegex(Regex.POTION_EFFECT, potionEffectString)));
+            executor.sendMessage(LanguageUtils.getMessage(LocalizedMessage.Message.SHOP_INFO_POTION_EFFECT, new LocalizedMessage.ReplacedRegex(Regex.POTION_EFFECT, potionEffectString),
+                    new LocalizedMessage.ReplacedRegex(Regex.EXTENDED, (potionExtended ? LanguageUtils.getMessage(LocalizedMessage.Message.SHOP_INFO_EXTENDED) : ""))));
         if (musicDiscName.length() > 0)
             executor.sendMessage(LanguageUtils.getMessage(LocalizedMessage.Message.SHOP_INFO_MUSIC_TITLE, new LocalizedMessage.ReplacedRegex(Regex.MUSIC_TITLE, musicDiscName)));
         executor.sendMessage(price);
diff --git a/src/main/resources/lang/de_DE.lang b/src/main/resources/lang/de_DE.lang
index 1819d5c..858c088 100644
--- a/src/main/resources/lang/de_DE.lang
+++ b/src/main/resources/lang/de_DE.lang
@@ -9,13 +9,14 @@ message.shopInfo.vendor=&6Verkäufer: &e%VENDOR%
 message.shopInfo.product=&6Produkt: &e%AMOUNT% x %ITEMNAME%
 message.shopInfo.stock=&6Auf Lager: &e%AMOUNT%
 message.shopInfo.enchantments=&6Verzauberungen: &e%ENCHANTMENT%
-message.shopInfo.potion-effect=&6Trank-Effekte: &e%POTION-EFFECT%
+message.shopInfo.potion-effect=&6Trank-Effekte: &e%POTION-EFFECT% %EXTENDED%
 message.shopInfo.music-disc-title=&6Schallplattentitel: &e%MUSIC-TITLE%
 message.shopInfo.none=&7Keine
 message.shopInfo.price=&6Preis: Kauf: &e%BUY-PRICE%&6 Verkauf: &e%SELL-PRICE%
 message.shopInfo.disabled=&7Deaktiviert
 message.shopInfo.is-normal=&6Typ: &eNormal
 message.shopInfo.is-admin=&6Typ: &eAdmin
+message.shopInfo.extended=(Verlängert)
 message.buy-and-sell-disabled=&cDu kannst keinen Shop ohne Kauf- und Verkaufspreis erstellen.
 message.buy-success=&aDu hast &6%AMOUNT% x %ITEMNAME%&a für &6%BUY-PRICE%&a von &6%VENDOR% &agekauft.
 message.buy-success-admin=&aDu hast &6%AMOUNT% x %ITEMNAME%&a für &6%BUY-PRICE% &agekauft.
diff --git a/src/main/resources/lang/en_US.lang b/src/main/resources/lang/en_US.lang
index 3b1641b..3233c4c 100644
--- a/src/main/resources/lang/en_US.lang
+++ b/src/main/resources/lang/en_US.lang
@@ -38,8 +38,8 @@ message.shopInfo.stock=&6In Stock: &e%AMOUNT%
 message.shopInfo.enchantments=&6Enchantments: &e%ENCHANTMENT%
 
 # Set the potion effect message the player gets after entering '/shop info' if the product has a potion effect
-# Usable regex: %POTION-EFFECT%
-message.shopInfo.potion-effect=&6Potion Effect: &e%POTION-EFFECT%
+# Usable regex: %POTION-EFFECT%, %EXTENDED%
+message.shopInfo.potion-effect=&6Potion Effect: &e%POTION-EFFECT% %EXTENDED%
 
 # Set the music disc title message the player gets after entering '/shop info' if the product is a music disc
 # Usable regex: %MUSIC-TITLE%
@@ -62,6 +62,10 @@ message.shopInfo.is-normal=&6Type: &eNormal
 # ... when the shop is an admin shop.
 message.shopInfo.is-admin=&6Type: &eAdmin
 
+# If the potion effect it extended, %EXTENDED% will be replaced by this.
+# If not, this will be empty.
+message.shopInfo.extended=(Extended)
+
 # Set the message when the player tries to create a shop with sell price and buy price set to 0
 message.buy-and-sell-disabled=&cYou can't create a shop with buying and selling disabled.