diff --git a/.changeset/busy-beans-change.md b/.changeset/busy-beans-change.md
new file mode 100644
index 00000000000..400f55454e2
--- /dev/null
+++ b/.changeset/busy-beans-change.md
@@ -0,0 +1,5 @@
+---
+"@effect/sql-drizzle": minor
+---
+
+Fix JSONB deserialization for db.insert in Effect + Drizzle integration
diff --git a/packages/sql-drizzle/src/internal/patch.ts b/packages/sql-drizzle/src/internal/patch.ts
index d84a37748e0..6ad29511cbf 100644
--- a/packages/sql-drizzle/src/internal/patch.ts
+++ b/packages/sql-drizzle/src/internal/patch.ts
@@ -47,7 +47,20 @@ export const makeRemoteCallback = Effect.gen(function*() {
   const constructionRuntime = yield* Effect.runtime<never>()
   return (sql: string, params: Array<any>, method: "all" | "execute" | "get" | "values" | "run") => {
     const runPromise = Runtime.runPromise(currentRuntime ? currentRuntime : constructionRuntime)
-    const statement = client.unsafe(sql, params)
+
+    const finalParams = params.map((e) => {
+      if (e === null || e === undefined) return e
+      if (typeof e !== "string") return e
+      const s = e.trim()
+      if (!(s.startsWith("{") || s.startsWith("["))) return e
+      try {
+        return JSON.parse(s)
+      } catch {
+        return e
+      }
+    })
+
+    const statement = client.unsafe(sql, finalParams)
     if (method === "execute") {
       return runPromise(Effect.either(Effect.map(statement.raw, (header) => ({ rows: [header] })))).then((res) => {
         if (res._tag === "Left") {
diff --git a/packages/sql-drizzle/test/Pg.test.ts b/packages/sql-drizzle/test/Pg.test.ts
index 1a21aee5969..4e11ecdd6e3 100644
--- a/packages/sql-drizzle/test/Pg.test.ts
+++ b/packages/sql-drizzle/test/Pg.test.ts
@@ -91,4 +91,30 @@ describe.sequential("Pg", () => {
       Effect.catchTag("ContainerError", () => Effect.void)
     )
   }, { timeout: 60000 })
+
+  it.effect("supports object params (auto JSON serialization)", () =>
+    Effect.gen(function*() {
+      const sql = yield* SqlClient.SqlClient
+      const db = yield* Pg.PgDrizzle
+
+      yield* sql`CREATE TABLE data_objects (id SERIAL PRIMARY KEY, payload JSONB NOT NULL)`
+
+      const payload = { foo: "bar", count: 42 }
+
+      yield* db.insert(D.pgTable("data_objects", {
+        id: D.serial("id").primaryKey(),
+        payload: D.jsonb("payload").notNull()
+      })).values({ payload })
+
+      const rows = yield* sql`SELECT id, payload FROM data_objects ORDER BY id`
+
+      assert.deepStrictEqual(rows, [
+        { id: 1, payload }
+      ])
+    }).pipe(
+      Effect.provide(DrizzlePgLive),
+      Effect.catchTag("ContainerError", () => Effect.void)
+    ), {
+    timeout: 60000
+  })
 })