diff --git a/dev-packages/e2e-tests/test-applications/node-exports-test-app/scripts/consistentExports.ts b/dev-packages/e2e-tests/test-applications/node-exports-test-app/scripts/consistentExports.ts
index e762909c9173..6ae689b80da3 100644
--- a/dev-packages/e2e-tests/test-applications/node-exports-test-app/scripts/consistentExports.ts
+++ b/dev-packages/e2e-tests/test-applications/node-exports-test-app/scripts/consistentExports.ts
@@ -21,6 +21,8 @@ const NODE_EXPORTS_IGNORE = [
   'SentryContextManager',
   'validateOpenTelemetrySetup',
   'preloadOpenTelemetry',
+  // Internal helper only needed within integrations (e.g. bunRuntimeMetricsIntegration)
+  '_INTERNAL_normalizeCollectionInterval',
 ];
 
 const nodeExports = Object.keys(SentryNode).filter(e => !NODE_EXPORTS_IGNORE.includes(e));
diff --git a/dev-packages/node-integration-tests/suites/bun-runtime-metrics/scenario-all.ts b/dev-packages/node-integration-tests/suites/bun-runtime-metrics/scenario-all.ts
index f82385c4c16e..6ec4ca0c1244 100644
--- a/dev-packages/node-integration-tests/suites/bun-runtime-metrics/scenario-all.ts
+++ b/dev-packages/node-integration-tests/suites/bun-runtime-metrics/scenario-all.ts
@@ -9,7 +9,7 @@ Sentry.init({
   transport: loggingTransport,
   integrations: [
     bunRuntimeMetricsIntegration({
-      collectionIntervalMs: 100,
+      collectionIntervalMs: 1000,
       collect: {
         cpuTime: true,
         memExternal: true,
@@ -19,7 +19,7 @@ Sentry.init({
 });
 
 async function run(): Promise<void> {
-  await new Promise<void>(resolve => setTimeout(resolve, 250));
+  await new Promise<void>(resolve => setTimeout(resolve, 1100));
   await Sentry.flush();
 }
 
diff --git a/dev-packages/node-integration-tests/suites/bun-runtime-metrics/scenario-opt-out.ts b/dev-packages/node-integration-tests/suites/bun-runtime-metrics/scenario-opt-out.ts
index d3aa0f309893..8987865e277d 100644
--- a/dev-packages/node-integration-tests/suites/bun-runtime-metrics/scenario-opt-out.ts
+++ b/dev-packages/node-integration-tests/suites/bun-runtime-metrics/scenario-opt-out.ts
@@ -9,7 +9,7 @@ Sentry.init({
   transport: loggingTransport,
   integrations: [
     bunRuntimeMetricsIntegration({
-      collectionIntervalMs: 100,
+      collectionIntervalMs: 1000,
       collect: {
         cpuUtilization: false,
         cpuTime: false,
@@ -21,7 +21,7 @@ Sentry.init({
 });
 
 async function run(): Promise<void> {
-  await new Promise<void>(resolve => setTimeout(resolve, 250));
+  await new Promise<void>(resolve => setTimeout(resolve, 1100));
   await Sentry.flush();
 }
 
diff --git a/dev-packages/node-integration-tests/suites/bun-runtime-metrics/scenario.ts b/dev-packages/node-integration-tests/suites/bun-runtime-metrics/scenario.ts
index 1948ddfa6c23..92e248cccc6e 100644
--- a/dev-packages/node-integration-tests/suites/bun-runtime-metrics/scenario.ts
+++ b/dev-packages/node-integration-tests/suites/bun-runtime-metrics/scenario.ts
@@ -9,13 +9,13 @@ Sentry.init({
   transport: loggingTransport,
   integrations: [
     bunRuntimeMetricsIntegration({
-      collectionIntervalMs: 100,
+      collectionIntervalMs: 1000,
     }),
   ],
 });
 
 async function run(): Promise<void> {
-  await new Promise<void>(resolve => setTimeout(resolve, 250));
+  await new Promise<void>(resolve => setTimeout(resolve, 1100));
   await Sentry.flush();
 }
 
diff --git a/dev-packages/node-integration-tests/suites/node-runtime-metrics/scenario-all.ts b/dev-packages/node-integration-tests/suites/node-runtime-metrics/scenario-all.ts
index e995482fafbf..94a7161fe00c 100644
--- a/dev-packages/node-integration-tests/suites/node-runtime-metrics/scenario-all.ts
+++ b/dev-packages/node-integration-tests/suites/node-runtime-metrics/scenario-all.ts
@@ -8,7 +8,7 @@ Sentry.init({
   transport: loggingTransport,
   integrations: [
     Sentry.nodeRuntimeMetricsIntegration({
-      collectionIntervalMs: 100,
+      collectionIntervalMs: 1000,
       collect: {
         cpuTime: true,
         memExternal: true,
@@ -22,7 +22,7 @@ Sentry.init({
 });
 
 async function run(): Promise<void> {
-  await new Promise<void>(resolve => setTimeout(resolve, 250));
+  await new Promise<void>(resolve => setTimeout(resolve, 1100));
   await Sentry.flush();
 }
 
diff --git a/dev-packages/node-integration-tests/suites/node-runtime-metrics/scenario-opt-out.ts b/dev-packages/node-integration-tests/suites/node-runtime-metrics/scenario-opt-out.ts
index 423e478ed1f8..e838df6e9408 100644
--- a/dev-packages/node-integration-tests/suites/node-runtime-metrics/scenario-opt-out.ts
+++ b/dev-packages/node-integration-tests/suites/node-runtime-metrics/scenario-opt-out.ts
@@ -8,7 +8,7 @@ Sentry.init({
   transport: loggingTransport,
   integrations: [
     Sentry.nodeRuntimeMetricsIntegration({
-      collectionIntervalMs: 100,
+      collectionIntervalMs: 1000,
       collect: {
         cpuUtilization: false,
         cpuTime: false,
@@ -22,7 +22,7 @@ Sentry.init({
 });
 
 async function run(): Promise<void> {
-  await new Promise<void>(resolve => setTimeout(resolve, 250));
+  await new Promise<void>(resolve => setTimeout(resolve, 1100));
   await Sentry.flush();
 }
 
diff --git a/dev-packages/node-integration-tests/suites/node-runtime-metrics/scenario.ts b/dev-packages/node-integration-tests/suites/node-runtime-metrics/scenario.ts
index b862634c719a..1e174e5c29cc 100644
--- a/dev-packages/node-integration-tests/suites/node-runtime-metrics/scenario.ts
+++ b/dev-packages/node-integration-tests/suites/node-runtime-metrics/scenario.ts
@@ -8,14 +8,14 @@ Sentry.init({
   transport: loggingTransport,
   integrations: [
     Sentry.nodeRuntimeMetricsIntegration({
-      collectionIntervalMs: 100,
+      collectionIntervalMs: 1000,
     }),
   ],
 });
 
 async function run(): Promise<void> {
   // Wait long enough for the collection interval to fire at least once.
-  await new Promise<void>(resolve => setTimeout(resolve, 250));
+  await new Promise<void>(resolve => setTimeout(resolve, 1100));
   await Sentry.flush();
 }
 
diff --git a/packages/bun/src/integrations/bunRuntimeMetrics.ts b/packages/bun/src/integrations/bunRuntimeMetrics.ts
index 7646eb23568b..5bd4e87adbf4 100644
--- a/packages/bun/src/integrations/bunRuntimeMetrics.ts
+++ b/packages/bun/src/integrations/bunRuntimeMetrics.ts
@@ -1,6 +1,6 @@
 import { performance } from 'perf_hooks';
 import { _INTERNAL_safeDateNow, _INTERNAL_safeUnref, defineIntegration, metrics } from '@sentry/core';
-import type { NodeRuntimeMetricsOptions } from '@sentry/node';
+import { _INTERNAL_normalizeCollectionInterval, type NodeRuntimeMetricsOptions } from '@sentry/node';
 
 const INTEGRATION_NAME = 'BunRuntimeMetrics';
 const DEFAULT_INTERVAL_MS = 30_000;
@@ -44,7 +44,9 @@ export interface BunRuntimeMetricsOptions {
   collect?: BunCollectOptions;
   /**
    * How often to collect metrics, in milliseconds.
+   * Minimum allowed value is 1000ms.
    * @default 30000
+   * @minimum 1000
    */
   collectionIntervalMs?: number;
 }
@@ -62,7 +64,11 @@ export interface BunRuntimeMetricsOptions {
  * ```
  */
 export const bunRuntimeMetricsIntegration = defineIntegration((options: BunRuntimeMetricsOptions = {}) => {
-  const collectionIntervalMs = options.collectionIntervalMs ?? DEFAULT_INTERVAL_MS;
+  const collectionIntervalMs = _INTERNAL_normalizeCollectionInterval(
+    options.collectionIntervalMs ?? DEFAULT_INTERVAL_MS,
+    INTEGRATION_NAME,
+    DEFAULT_INTERVAL_MS,
+  );
   const collect = {
     // Default on
     cpuUtilization: true,
diff --git a/packages/bun/test/integrations/bunRuntimeMetrics.test.ts b/packages/bun/test/integrations/bunRuntimeMetrics.test.ts
index 6264905db41e..a03b07ffe760 100644
--- a/packages/bun/test/integrations/bunRuntimeMetrics.test.ts
+++ b/packages/bun/test/integrations/bunRuntimeMetrics.test.ts
@@ -212,4 +212,39 @@ describe('bunRuntimeMetricsIntegration', () => {
       expect(countSpy).not.toHaveBeenCalledWith('bun.runtime.process.uptime', expect.anything(), expect.anything());
     });
   });
+
+  describe('collectionIntervalMs minimum', () => {
+    it('enforces minimum of 1000ms and warns', () => {
+      const warnSpy = spyOn(globalThis.console, 'warn').mockImplementation(() => {});
+
+      const integration = bunRuntimeMetricsIntegration({ collectionIntervalMs: 100 });
+      integration.setup();
+
+      expect(warnSpy).toHaveBeenCalledWith(expect.stringContaining('collectionIntervalMs'));
+      expect(warnSpy).toHaveBeenCalledWith(expect.stringContaining('1000'));
+
+      // Should fire at minimum 1000ms, not at 100ms
+      jest.advanceTimersByTime(100);
+      expect(gaugeSpy).not.toHaveBeenCalled();
+
+      jest.advanceTimersByTime(900);
+      expect(gaugeSpy).toHaveBeenCalled();
+    });
+
+    it('falls back to default when NaN', () => {
+      const warnSpy = spyOn(globalThis.console, 'warn').mockImplementation(() => {});
+
+      const integration = bunRuntimeMetricsIntegration({ collectionIntervalMs: NaN });
+      integration.setup();
+
+      expect(warnSpy).toHaveBeenCalledWith(expect.stringContaining('collectionIntervalMs'));
+
+      // Should fire at the default 30000ms, not at 1000ms
+      jest.advanceTimersByTime(1000);
+      expect(gaugeSpy).not.toHaveBeenCalled();
+
+      jest.advanceTimersByTime(29_000);
+      expect(gaugeSpy).toHaveBeenCalled();
+    });
+  });
 });
diff --git a/packages/deno/src/integrations/denoRuntimeMetrics.ts b/packages/deno/src/integrations/denoRuntimeMetrics.ts
index 077e920bd5a4..54d162132db8 100644
--- a/packages/deno/src/integrations/denoRuntimeMetrics.ts
+++ b/packages/deno/src/integrations/denoRuntimeMetrics.ts
@@ -28,7 +28,7 @@ export interface DenoRuntimeMetricsOptions {
   };
   /**
    * How often to collect metrics, in milliseconds.
-   * Values below 1000ms are clamped to 1000ms.
+   * Minimum allowed value is 1000ms.
    * @default 30000
    * @minimum 1000
    */
@@ -49,13 +49,22 @@ export interface DenoRuntimeMetricsOptions {
  */
 export const denoRuntimeMetricsIntegration = defineIntegration((options: DenoRuntimeMetricsOptions = {}) => {
   const rawInterval = options.collectionIntervalMs ?? DEFAULT_INTERVAL_MS;
-  if (!Number.isFinite(rawInterval) || rawInterval < MIN_INTERVAL_MS) {
+  let collectionIntervalMs: number;
+  if (!Number.isFinite(rawInterval)) {
     // eslint-disable-next-line no-console
     console.warn(
-      `[Sentry] denoRuntimeMetricsIntegration: collectionIntervalMs (${rawInterval}) is below the minimum of ${MIN_INTERVAL_MS}ms. Clamping to ${MIN_INTERVAL_MS}ms.`,
+      `[Sentry] denoRuntimeMetricsIntegration: collectionIntervalMs (${rawInterval}) is invalid. Using default of ${DEFAULT_INTERVAL_MS}ms.`,
     );
+    collectionIntervalMs = DEFAULT_INTERVAL_MS;
+  } else if (rawInterval < MIN_INTERVAL_MS) {
+    // eslint-disable-next-line no-console
+    console.warn(
+      `[Sentry] denoRuntimeMetricsIntegration: collectionIntervalMs (${rawInterval}) is below the minimum of ${MIN_INTERVAL_MS}ms. Using minimum of ${MIN_INTERVAL_MS}ms.`,
+    );
+    collectionIntervalMs = MIN_INTERVAL_MS;
+  } else {
+    collectionIntervalMs = rawInterval;
   }
-  const collectionIntervalMs = Number.isFinite(rawInterval) ? Math.max(rawInterval, MIN_INTERVAL_MS) : MIN_INTERVAL_MS;
   const collect = {
     // Default on
     memRss: true,
diff --git a/packages/deno/test/deno-runtime-metrics.test.ts b/packages/deno/test/deno-runtime-metrics.test.ts
index 12b1c72fd985..48435279a954 100644
--- a/packages/deno/test/deno-runtime-metrics.test.ts
+++ b/packages/deno/test/deno-runtime-metrics.test.ts
@@ -119,7 +119,7 @@ Deno.test('attaches correct sentry.origin attribute', async () => {
   assertEquals(rss?.attributes?.['sentry.origin']?.value, 'auto.deno.runtime_metrics');
 });
 
-Deno.test('warns and clamps collectionIntervalMs below 1000ms', () => {
+Deno.test('warns and enforces minimum collectionIntervalMs', () => {
   const warnings: string[] = [];
   const originalWarn = globalThis.console.warn;
   globalThis.console.warn = (msg: string) => warnings.push(msg);
@@ -135,7 +135,7 @@ Deno.test('warns and clamps collectionIntervalMs below 1000ms', () => {
   assertStringIncludes(warnings[0]!, '1000');
 });
 
-Deno.test('warns and clamps collectionIntervalMs when NaN', () => {
+Deno.test('warns and falls back to default when collectionIntervalMs is NaN', () => {
   const warnings: string[] = [];
   const originalWarn = globalThis.console.warn;
   globalThis.console.warn = (msg: string) => warnings.push(msg);
@@ -148,4 +148,5 @@ Deno.test('warns and clamps collectionIntervalMs when NaN', () => {
 
   assertEquals(warnings.length, 1);
   assertStringIncludes(warnings[0]!, 'collectionIntervalMs');
+  assertStringIncludes(warnings[0]!, 'invalid');
 });
diff --git a/packages/node-core/src/common-exports.ts b/packages/node-core/src/common-exports.ts
index d6d1e070ef85..03cf6addbc13 100644
--- a/packages/node-core/src/common-exports.ts
+++ b/packages/node-core/src/common-exports.ts
@@ -12,7 +12,11 @@ import * as logger from './logs/exports';
 
 // Node-core integrations (not OTel-dependent)
 export { nodeContextIntegration } from './integrations/context';
-export { nodeRuntimeMetricsIntegration, type NodeRuntimeMetricsOptions } from './integrations/nodeRuntimeMetrics';
+export {
+  nodeRuntimeMetricsIntegration,
+  type NodeRuntimeMetricsOptions,
+  _INTERNAL_normalizeCollectionInterval,
+} from './integrations/nodeRuntimeMetrics';
 export { contextLinesIntegration } from './integrations/contextlines';
 export { localVariablesIntegration } from './integrations/local-variables';
 export { modulesIntegration } from './integrations/modules';
diff --git a/packages/node-core/src/integrations/nodeRuntimeMetrics.ts b/packages/node-core/src/integrations/nodeRuntimeMetrics.ts
index c2ae72f04f77..5d6ab5ea7ca0 100644
--- a/packages/node-core/src/integrations/nodeRuntimeMetrics.ts
+++ b/packages/node-core/src/integrations/nodeRuntimeMetrics.ts
@@ -3,8 +3,37 @@ import { _INTERNAL_safeDateNow, _INTERNAL_safeUnref, defineIntegration, metrics
 
 const INTEGRATION_NAME = 'NodeRuntimeMetrics';
 const DEFAULT_INTERVAL_MS = 30_000;
+const MIN_COLLECTION_INTERVAL_MS = 1_000;
 const EVENT_LOOP_DELAY_RESOLUTION_MS = 10;
 
+/**
+ * Normalizes a `collectionIntervalMs` value, enforcing a minimum of 1000ms.
+ * - Non-finite values (NaN, Infinity): warns and falls back to `defaultInterval`.
+ * - Values below the minimum: warns and clamps to 1000ms.
+ * @internal
+ */
+export function _INTERNAL_normalizeCollectionInterval(
+  rawInterval: number,
+  integrationName: string,
+  defaultInterval: number,
+): number {
+  if (!Number.isFinite(rawInterval)) {
+    // eslint-disable-next-line no-console
+    console.warn(
+      `[Sentry] ${integrationName}: collectionIntervalMs (${rawInterval}) is invalid. Using default of ${defaultInterval}ms.`,
+    );
+    return defaultInterval;
+  }
+  if (rawInterval < MIN_COLLECTION_INTERVAL_MS) {
+    // eslint-disable-next-line no-console
+    console.warn(
+      `[Sentry] ${integrationName}: collectionIntervalMs (${rawInterval}) is below the minimum of ${MIN_COLLECTION_INTERVAL_MS}ms. Using minimum of ${MIN_COLLECTION_INTERVAL_MS}ms.`,
+    );
+    return MIN_COLLECTION_INTERVAL_MS;
+  }
+  return rawInterval;
+}
+
 export interface NodeRuntimeMetricsOptions {
   /**
    * Which metrics to collect.
@@ -44,7 +73,9 @@ export interface NodeRuntimeMetricsOptions {
   };
   /**
    * How often to collect metrics, in milliseconds.
+   * Minimum allowed value is 1000ms.
    * @default 30000
+   * @minimum 1000
    */
   collectionIntervalMs?: number;
 }
@@ -62,7 +93,11 @@ export interface NodeRuntimeMetricsOptions {
  * ```
  */
 export const nodeRuntimeMetricsIntegration = defineIntegration((options: NodeRuntimeMetricsOptions = {}) => {
-  const collectionIntervalMs = options.collectionIntervalMs ?? DEFAULT_INTERVAL_MS;
+  const collectionIntervalMs = _INTERNAL_normalizeCollectionInterval(
+    options.collectionIntervalMs ?? DEFAULT_INTERVAL_MS,
+    INTEGRATION_NAME,
+    DEFAULT_INTERVAL_MS,
+  );
   const collect = {
     // Default on
     cpuUtilization: true,
diff --git a/packages/node-core/test/integrations/nodeRuntimeMetrics.test.ts b/packages/node-core/test/integrations/nodeRuntimeMetrics.test.ts
index fe1de568304a..f5dd76edf779 100644
--- a/packages/node-core/test/integrations/nodeRuntimeMetrics.test.ts
+++ b/packages/node-core/test/integrations/nodeRuntimeMetrics.test.ts
@@ -329,5 +329,42 @@ describe('nodeRuntimeMetricsIntegration', () => {
 
       expect(countSpy).not.toHaveBeenCalledWith('node.runtime.process.uptime', expect.anything(), expect.anything());
     });
+
+    it('enforces minimum collectionIntervalMs of 1000ms and warns', () => {
+      const warnSpy = vi.spyOn(console, 'warn').mockImplementation(() => {});
+
+      const integration = nodeRuntimeMetricsIntegration({ collectionIntervalMs: 100 });
+      integration.setup();
+
+      expect(warnSpy).toHaveBeenCalledWith(expect.stringContaining('collectionIntervalMs'));
+      expect(warnSpy).toHaveBeenCalledWith(expect.stringContaining('1000'));
+
+      // Should fire at the minimum 1000ms, not at 100ms
+      vi.advanceTimersByTime(100);
+      expect(gaugeSpy).not.toHaveBeenCalled();
+
+      vi.advanceTimersByTime(900);
+      expect(gaugeSpy).toHaveBeenCalled();
+
+      warnSpy.mockRestore();
+    });
+
+    it('falls back to default when collectionIntervalMs is NaN', () => {
+      const warnSpy = vi.spyOn(console, 'warn').mockImplementation(() => {});
+
+      const integration = nodeRuntimeMetricsIntegration({ collectionIntervalMs: NaN });
+      integration.setup();
+
+      expect(warnSpy).toHaveBeenCalledWith(expect.stringContaining('collectionIntervalMs'));
+
+      // Should fire at the default 30000ms, not at 1000ms
+      vi.advanceTimersByTime(1000);
+      expect(gaugeSpy).not.toHaveBeenCalled();
+
+      vi.advanceTimersByTime(29_000);
+      expect(gaugeSpy).toHaveBeenCalled();
+
+      warnSpy.mockRestore();
+    });
   });
 });
diff --git a/packages/node/src/index.ts b/packages/node/src/index.ts
index 67fe97e59300..ac74638130b9 100644
--- a/packages/node/src/index.ts
+++ b/packages/node/src/index.ts
@@ -203,4 +203,5 @@ export {
   cron,
   NODE_VERSION,
   validateOpenTelemetrySetup,
+  _INTERNAL_normalizeCollectionInterval,
 } from '@sentry/node-core';