diff --git a/include/constants/item_config.h b/include/constants/item_config.h
index 59f3ceb39a..ab46849ce7 100644
--- a/include/constants/item_config.h
+++ b/include/constants/item_config.h
@@ -18,6 +18,7 @@
 #define I_KEY_ESCAPE_ROPE       GEN_7   // In Gen8, Escape Rope became a Key Item. Keep in mind, this will make it free to buy in marts.
 #define I_LEGACY_HEALING_ITEMS  GEN_7   // In Gen7+, certain healing items recover less HP than they used to.
 #define I_SITRUS_BERRY_HEAL     GEN_7   // In Gen4+, Sitrus Berry was changed from healing 30 HP to healing 25% of Max HP.
+#define I_SOUL_DEW_BOOST        GEN_7   // In Gens3-6, Soul Dew boosts Lati@s' Sp. Atk and Sp. Def by 50%. In Gen7+ it boosts the power of their Psychic and Dragon type moves by 20% instead.
 
 // Ball config
 #define I_LURE_BALL_MODIFIER    GEN_7   // In Gen7+, Lure Ball's catch multiplier is x5 instead of x3.
diff --git a/src/data/items.h b/src/data/items.h
index 8e2843ada9..d0d2861bc1 100644
--- a/src/data/items.h
+++ b/src/data/items.h
@@ -2724,6 +2724,11 @@ const struct Item gItems[] =
         .name = _("Soul Dew"),
         .itemId = ITEM_SOUL_DEW,
         .price = 0,
+        #if defined(BATTLE_ENGINE) && I_SOUL_DEW_BOOST >= GEN_7
+            .holdEffectParam = 20,
+        #elif defined(BATTLE_ENGINE) && I_SOUL_DEW_BOOST <= GEN_6
+            .holdEffectParam = 50,
+        #endif
         .holdEffect = HOLD_EFFECT_SOUL_DEW,
         .description = sSoulDewDesc,
         .pocket = POCKET_ITEMS,