Does Nitrous Oxide Put You to Sleep?

June 25, 2025

Woman with nitrous oxide mask

If you feel nervous about an upcoming dental visit, your dentist may recommend nitrous oxide, commonly known as laughing gas, to help you relax during your procedure. But many patients wonder: will nitrous oxide put me to sleep or cause me to lose consciousness? Not exactly.

Here’s what you can expect when receiving nitrous oxide sedation at the dentist’s office.

What Is Nitrous Oxide?

Nitrous oxide is a colorless, odorless gas that has been used safely in dentistry for decades to help patients feel calm and comfortable during treatment. It is mixed with oxygen and administered through a small mask placed over your nose. Within a few minutes of breathing it in, you will begin to feel more relaxed and at ease.

Does Nitrous Oxide Make You Sleep?

Nitrous oxide does not put you to sleep or make you unconscious. Instead, it creates a feeling of lightness, warmth, or mild euphoria while keeping you awake and aware throughout your treatment. You will be able to hear and respond to your dentist’s instructions, ask questions, and remain in control during the procedure.

While nitrous oxide can make you feel drowsy, it is considered a form of minimal sedation rather than general anesthesia. If you do feel sleepy, you may close your eyes and rest, but you will not lose consciousness.

What Does Nitrous Oxide Feel Like?

Patients often describe feeling:

  • Tingling in the arms and legs
  • A sense of calm and relaxation
  • Lightheadedness
  • Warmth or floating sensations

These effects help reduce anxiety and discomfort, allowing you to undergo your dental treatment with less stress. One of the benefits of nitrous oxide is that its effects wear off quickly once the gas is turned off, allowing you to return to your normal activities shortly after your appointment.

Is Nitrous Oxide Safe?

Nitrous oxide is a safe and effective sedation option for most patients, including children, when administered by a trained dental professional. Your dentist will monitor your comfort and oxygen levels throughout your procedure to ensure your safety.

Before your appointment, your dentist will review your medical history to confirm that nitrous oxide is appropriate for you. If you have respiratory conditions or are pregnant, your dentist may recommend an alternative form of sedation.

Benefits of Nitrous Oxide Sedation

Choosing nitrous oxide sedation can help you:

  • Overcome dental anxiety or fear
  • Feel more comfortable during longer or complex treatments
  • Reduce gag reflex sensitivity
  • Return to daily activities quickly after your appointment

If you have been avoiding dental care due to fear or anxiety, nitrous oxide may help you receive the treatment you need while keeping you calm and comfortable.

Ready to Feel Comfortable at the Dentist?

Nitrous oxide won’t put you to sleep, but it will help you feel relaxed and at ease so you can confidently complete your dental treatment.

About the Practice

Stress-free dentistry is our motto at Smile Keepers in Brenham, TX. Patient comfort and confidence are at the heart of everything we do. We take the time to listen to your concerns, explain your options, and help you feel at ease at every appointment. Whether you’re here for a routine checkup, advanced restorative treatment, or sedation dentistry to ease dental anxiety, we are committed to making your visit a positive one.

Call us at (979) 830-5022 or schedule an appointment online.