diff --git a/frontend/js/db.js b/frontend/js/db.js
index 96f4a7d..21b3f70 100644
--- a/frontend/js/db.js
+++ b/frontend/js/db.js
@@ -1141,21 +1141,22 @@ async function runMigrations() {
   await addSuppCol("omega6_mg", "REAL");     // омега-6
   await addSuppCol("omega9_mg", "REAL");     // омега-9
 
-  // Deduplicate products: keep lowest id, reassign food_log and recipe_ingredients
+  // Deduplicate products: keep lowest id per name_lower, reassign refs, delete dupes
+  // All in bulk SQL — no per-row loop
   try {
-    const dupes = await select(
-      "SELECT name_lower, MIN(id) as keep_id, COUNT(*) as cnt FROM products WHERE name_lower IS NOT NULL GROUP BY name_lower HAVING cnt > 1"
-    );
-    if (dupes.length > 0) {
-      for (const d of dupes) {
-        // Reassign food_log entries to the kept product
-        await execute("UPDATE food_log SET product_id = ?1 WHERE product_id IN (SELECT id FROM products WHERE name_lower = ?2 AND id != ?1)", [d.keep_id, d.name_lower]);
-        // Reassign recipe_ingredients
-        await execute("UPDATE recipe_ingredients SET product_id = ?1 WHERE product_id IN (SELECT id FROM products WHERE name_lower = ?2 AND id != ?1)", [d.keep_id, d.name_lower]);
-        // Delete duplicates
-        await execute("DELETE FROM products WHERE name_lower = ?1 AND id != ?2", [d.name_lower, d.keep_id]);
-      }
-      console.log(`[db.js] Deduplicated ${dupes.length} product groups`);
+    const dupeCount = await select("SELECT COUNT(*) as cnt FROM products WHERE name_lower IS NOT NULL AND id NOT IN (SELECT MIN(id) FROM products WHERE name_lower IS NOT NULL GROUP BY name_lower)");
+    if (dupeCount[0].cnt > 0) {
+      // Reassign food_log to kept (MIN) id
+      await execute(`UPDATE food_log SET product_id = (
+        SELECT MIN(p2.id) FROM products p2 WHERE p2.name_lower = (SELECT p3.name_lower FROM products p3 WHERE p3.id = food_log.product_id)
+      ) WHERE product_id IN (SELECT id FROM products WHERE name_lower IS NOT NULL AND id NOT IN (SELECT MIN(id) FROM products WHERE name_lower IS NOT NULL GROUP BY name_lower))`);
+      // Reassign recipe_ingredients
+      await execute(`UPDATE recipe_ingredients SET product_id = (
+        SELECT MIN(p2.id) FROM products p2 WHERE p2.name_lower = (SELECT p3.name_lower FROM products p3 WHERE p3.id = recipe_ingredients.product_id)
+      ) WHERE product_id IN (SELECT id FROM products WHERE name_lower IS NOT NULL AND id NOT IN (SELECT MIN(id) FROM products WHERE name_lower IS NOT NULL GROUP BY name_lower))`);
+      // Delete dupes
+      await execute("DELETE FROM products WHERE name_lower IS NOT NULL AND id NOT IN (SELECT MIN(id) FROM products WHERE name_lower IS NOT NULL GROUP BY name_lower)");
+      console.log(`[db.js] Deduplicated ${dupeCount[0].cnt} products`);
     }
   } catch (e) { console.error("[db.js] dedup error:", e); }