Table of Contents
Lidocaine is a common local anesthetic that helps numb areas of the body, reducing pain and discomfort. If you’ve ever had a minor surgical procedure or dental work, chances are you’ve been given lidocaine. But how long does lidocaine last, and what factors affect its duration? In this article, we’ll explore everything you need to know about lidocaine, from its effects to how long it stays in your system.
What Is Lidocaine?
A drug called lidocaine is used to numb tissue in a particular location. It works by blocking nerve signals in the body, making it an effective local anesthetic. Doctors often use lidocaine in minor surgeries, dental procedures, and even to relieve pain from conditions like shingles.
But how long does lidocaine last? That depends on several factors, including the type of lidocaine, how it’s administered, and your body’s reaction to it. Let’s dive deeper to find out more.
How Long Does Lidocaine Last?
The big question everyone wants to know: how long does lidocaine last? On average, the numbing effect of lidocaine lasts between 30 minutes to 2 hours. However, there are a few things that can influence this duration.
Different Types of Lidocaine
Lidocaine comes in various forms, such as injections, creams, gels, and patches. Each type works slightly differently, which can affect how long it lasts.
- Injections: Lidocaine injections, often used in dental and minor surgical procedures, generally last the longest. The numbing effect from an injection can last up to 2 hours.
- Creams and Gels: Topical forms like lidocaine creams and gels tend to wear off faster, usually lasting around 30 minutes to 1 hour.
- Patches: Lidocaine patches, which are often used to relieve chronic pain, can provide longer-lasting relief—up to 12 hours in some cases.
Factors That Affect How Long Lidocaine Lasts
Several factors influence how long lidocaine lasts in your body. These include:
- Dosage: The higher the dose of lidocaine, the longer it will take for the effects to wear off.
- Application Method: As mentioned earlier, whether lidocaine is applied topically or injected plays a significant role in its duration.
- Your Body: Every person reacts differently to medications. Factors such as your weight, metabolism, and overall health can affect how long lidocaine stays effective.
- Location of Application: The part of the body where lidocaine is applied also impacts its lasting power. Areas with more blood flow, like the mouth, tend to wear off quicker compared to areas with less blood flow.
What Happens After Lidocaine Wears Off?
Once the numbing effects of lidocaine wear off, normal sensation gradually returns to the treated area. This can happen slowly or quickly, depending on your body’s metabolism and how much lidocaine was used. You might start feeling a tingling or “pins and needles” sensation as feeling comes back.
Possible Side Effects When Lidocaine Wears Off
While lidocaine is generally safe when used as directed, some people may experience side effects after it wears off. These include:
- Mild pain: Once the numbing effect fades, you may feel some pain or discomfort in the treated area, especially if it was a painful procedure.
- Tingling sensation: It’s normal to feel a tingling or prickling sensation as the numbing fades.
- Swelling or redness: In rare cases, you might notice some swelling or redness where lidocaine was applied. After a few hours, this normally goes away on its own.
If you experience severe side effects like difficulty breathing, dizziness, or swelling of the face, seek medical attention immediately.
How Long Does Lidocaine Stay in Your System?
Although the numbing effect of lidocaine wears off after a couple of hours, small amounts of the drug can remain in your system for a longer time. Lidocaine is usually metabolized by your liver and eliminated through your urine. In most cases, it completely leaves your body within 24 hours.
However, if you have liver problems or other medical conditions, it might take longer for your body to process and remove the drug. This is something to keep in mind if you’re receiving frequent or high doses of lidocaine.
How to Make Lidocaine Last Longer
There are a few ways to make lidocaine last longer if you’re undergoing a procedure or dealing with chronic pain. These methods may help prolong the numbing effect:
- Epinephrine: Sometimes, doctors will mix lidocaine with epinephrine, a medication that helps constrict blood vessels. This slows down the absorption of lidocaine, making it last longer.
- Dosage Adjustment: Discuss with your doctor the possibility of adjusting the dosage based on your needs. A larger dosage might offer relief that lasts longer.
- Slow Application: In some cases, applying lidocaine slowly over time (such as with a patch) can help provide longer-lasting relief.
Also Read: How Long Does Dental Numbing Last? Discover Relief or Worry!
When Should You Avoid Lidocaine?
While lidocaine is generally safe, there are some situations where you should avoid using it. If you have any of the following conditions, speak with your doctor before using lidocaine:
- Allergic reactions: Some people are allergic to lidocaine or other local anesthetics. If you’ve experienced an allergic reaction in the past, it’s important to let your doctor know.
- Heart conditions: In rare cases, lidocaine can affect heart function, so people with certain heart conditions should use it with caution.
- Pregnancy or breastfeeding: While lidocaine is usually safe during pregnancy, it’s always a good idea to consult your doctor before using any medication while pregnant or breastfeeding.
So, how long does lidocaine last? While the numbing effect typically lasts between 30 minutes to 2 hours, the duration depends on factors such as the type of lidocaine, dosage, and how your body processes the drug. Understanding how long lidocaine lasts can help you prepare for procedures or manage pain effectively.
If you’re considering lidocaine for a medical procedure or pain relief, always consult your healthcare provider to ensure it’s the right choice for you. The shocking truth about lidocaine is that while it provides temporary relief, its effectiveness and safety depend on proper usage.
By keeping these factors in mind, you can make the most of lidocaine’s benefits while minimizing any potential risks.