diff --git a/data/mods/gen4/moves.ts b/data/mods/gen4/moves.ts
index 6d9f4f320bd1..e38589fcf941 100644
--- a/data/mods/gen4/moves.ts
+++ b/data/mods/gen4/moves.ts
@@ -503,7 +503,32 @@ export const Moves: import('../../../sim/dex-moves').ModdedMoveDataTable = {
 	fling: {
 		inherit: true,
 		onPrepareHit(target, source, move) {
+			if (source.ignoringItem()) return false;
 			if (source.hasAbility('multitype')) return false;
+			const item = source.getItem();
+			if (!this.singleEvent('TakeItem', item, source.itemState, source, source, move, item)) return false;
+			if (!item.fling) return false;
+			move.basePower = item.fling.basePower;
+			this.debug('BP: ' + move.basePower);
+			if (item.isBerry) {
+				move.onHit = function (foe) {
+					if (this.singleEvent('Eat', item, null, foe, null, null)) {
+						this.runEvent('EatItem', foe, null, null, item);
+						if (item.id === 'leppaberry') foe.staleness = 'external';
+					}
+					if (item.onEat) foe.ateBerry = true;
+				};
+			} else if (item.fling.effect) {
+				move.onHit = item.fling.effect;
+			} else {
+				if (!move.secondaries) move.secondaries = [];
+				if (item.fling.status) {
+					move.secondaries.push({status: item.fling.status});
+				} else if (item.fling.volatileStatus) {
+					move.secondaries.push({volatileStatus: item.fling.volatileStatus});
+				}
+			}
+			source.addVolatile('fling');
 		},
 	},
 	focuspunch: {