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How Long Will the Effects of Novocaine Last?

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Novocaine is a local anesthetic that is generally used in dental treatments or small surgeries.

It is ideal for this type of procedure because it has a short-lived effect and can be concentrated in small areas. Depending on how the practitioner uses it, its effect will typically last between 30 and 90 minutes.

how long novocain lasts
It was thorough professional and informative. I was satisfied with consultation and look forward to having my dental needs addressed
Everything went great today for her surgery but I do have some feedback about other things. My daughter was scheduled to be put to sleep to undergo a root canal. They ended up needing more anthesia which I was willing to pay for. Surgery was supposed to be an hour (I was told this before they started), and it ended up being 2 hours because of some minor complications. Noone came to the lobby to inform us. When it was over, I asked to see her. They said I had to pay first. I just paid almost 5k and they were more worried about an additional $300 before allowing me to see my daughter? This didn't sit right. I didn't say anything. I paid the bill and went to see my daughter. Dr. Hoffman is the nicest man I have ever met! He was outstanding. Also, in the weeks before her surgery, the office appeared to not communicate. I would receive a call saying one thing then someone else would say another. They were never on the same page. Last week, they needed to speak with me to confirm a few things. They called me at 8:16am then again at 1:06pm. Leaving me a voicemail that if they do not hear from me they were going to cancel her surgery. Wow! I work. I work 8am-5pm. I do not have access to my phone during those hours. They did leave a voicemail and I would have called the next day but they did not give me a chance before sending me an email threatening to cancel. Also, they had called me several weeks before to inform me I had no insurance. I called my insurance company and they said I did. Not sure what happened but it resulted in unnecessary phone calls during my only free 20 minutes at work. If your appointment is at 10am, do not plan on seeing anyone for awhile. All our appointments ran an hour behind. I think Dr. Hoffman is wonderful but the office staff needs some help. Not friendly at all. Noone even smiled! The nurses in the room with my daughter were great too.
I went to nervous and 3 to 4 hours later, I essentially woke up in the car on my way home without realizing anything had happened. If you have trauma with previous dental issues, this is the place. I have a had severe dental trauma my entire life. Until now, they are all fantastic.
Response from the owner:Thank you for your kind words and for sharing your experience. We’re grateful our team could help provide a comfortable experience and appreciate your trust in us.
Our experience was wonderful. Our Down’s Syndrome son is very apprehensive about his appointments, but Dr. Thoms and all of his staff made our son more compliant. Each member seems vested in their job and are so kind and caring. Thank you for a positive experience.
Response from the owner:Thank you for your kind words! We’re so glad your family had a positive experience. Our team takes great pride in providing compassionate, individualized care, and your feedback means so much to us!
Everyone is always very welcoming and professional.
Response from the owner:Thank you for your kind words! We’re so glad our team makes you feel welcome. We truly appreciate your support!

If you are about to have a procedure with Novocaine, here is what to expect.

What is Novocaine?

Novocaine is a brand of the local anesthetic procaine, usually used for uncomplicated procedures. It numbs a small localized area, allowing the doctor to perform surgery.

The types of procedures that require the use of Novocaine vary from dental care to small surgery, such as dermatology, ophthalmology, etc. Your doctor will most probably administer this anesthetic when treating a cavity, removing a wart, or collecting tissue for biopsy.

A Short History of Novocaine

Novocaine revolutionized the medical world at the beginning of the 20th century, becoming the first synthetic local anesthetic to be used in the United States. It has allowed doctors to perfect their procedures and increase the quality of treatment received by the patients.

Novocaine replaced cocaine as the local anesthetic, and it had fewer side effects than the drug. In the last decade, with new synthetic anesthesia being introduced, Novocaine lost its popularity, but plenty of dentists and doctors continue to use it.

How Long Do the Effects of Novocaine Last?

If you are worried that Novocaine will not numb you throughout your procedure, it is important to note that while it might be the shortest-acting local anesthetic nowadays, your dentist can make it last longer by administering it together with epinephrine (adrenaline).

The dentist will increase the dosage if needed or switch to a different drug in case Novocaine is no longer helping.

Novocaine by itself will typically last about 30 minutes, while paired with epinephrine, it can last up to 90 minutes. Its effects begin 9-10 minutes after being administered through an injection in the tissue.

What Factors Could Influence How Long Novocaine Lasts?

The main factor that dictates how long the drug’s effect will last is the dosage. Your sedation dentist will calculate the dosage based on the size of the area that needs to be numbed, the number of nerves present in that area, and whether epinephrine will be used.

If the Novocaine injection doesn’t seem to work, the dosage will be increased, or the injection will be made in a different area. The doctor might also choose to use something else.

The bottom line is this: Novocaine is a widely used local anesthetic because it is generally stable and safe for patients. Its prolonged effects, when paired with epinephrine, allow it to be used for a broad range of treatments while having minimal side effects.

If you have additional question, don’t hesitate to give us a call at (314) 862-7844.

Updated: October 6, 2026

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