For individuals experiencing lower back pain and sciatica symptoms, can using a lidocaine patch help?

Lidocaine Patch

Lidocaine patches are in a drug class called local anesthetics (MedlinePlus, 2025) (Food and Drug Administration, 2022). They relieve pain in small body areas by blocking the nerves from sending pain signals. The Food and Drug Administration approved lidocaine 5% or 1.8% patches for relieving postherpetic neuralgia (PHN) pain. These lidocaine patches are prescription-only (Food and Drug Administration, 2022). They are available either by prescription or over the counter and are commonly used for back pain and other areas. Over-the-counter lidocaine, 4% patches, can be used to relieve minor aches and pains, including back pain. However, further research is needed to recommend the use of lidocaine patches as an effective method of pain relief. (Department of Veterans Affairs/Department of Defense, 2022) (North American Spine Society, 2020)

The Patch

They are available in prescription and over-the-counter forms. Over-the-counter forms come as a 4% patch in various brands, such as (MedlinePlus, 2025)

• Aspercreme
• Lidocare
• Salonpas

Prescription-only patches come in 5% or 1.8% patches and are approved to relieve long-term nerve pain from shingles in adults. Zlido is a brand name for a 1.8% lidocaine patch. Five percent lidocaine patches are available generically. (DailyMed, 2018) (Food and Drug Administration, 2021) The safety and effectiveness in children are unknown. (Food and Drug Administration, 2022)

Other Lidocaine Forms

As a local anesthetic, it is available in several other forms, including:

• Spray
• Topical cream
• Lotion
• Liquid
• Ear drops
• Eye gel
• Injection
• It is also available as a short-term intravenous infusion for abnormal heart rhythm. (DailyMed, 2025)

Effectiveness

Clinical trials have shown that the patches effectively relieve chronic low back pain. However, these studies were nonrandomized and did not include a control group to compare against the treatment group. (Santana J. A., Klass S., & Felix E. R. 2020) The results may be subject to potential biases. For this reason, further evidence is needed to support lidocaine patches’ effectiveness in reducing low back pain. (North American Spine Society, 2020) High-quality randomized and controlled clinical trials are necessary to study the effectiveness. (North American Spine Society, 2020) (Santana J. A., Klass S., & Felix E. R. 2020)

How to Use Safely

In general, keep the following in mind (MedlinePlus, 2025)

• Use according to the directions on the box and the healthcare provider’s recommendations.
• Do not use on broken or inflamed, swollen skin.
• Do not apply heat like heating pads or electric blankets over patches.
• Avoid getting water on or around the patch.
• Avoid letting a patch near your eyes to limit eye irritation.
• Fold the sticky sides of the used lidocaine patches together and safely throw them away, keeping them away from children and pets.

How to use (MedlinePlus, 2025)

• Clean and dry the affected area before placing the patch.
• Apply to the affected body area as directed.
• Wash your hands after touching the patch.
• Remove the patch after what is usually recommended after eight hours.

How Quickly Does It Work?

The amount of medication absorbed into the blood depends on how long the patch is placed on the body and how much is covered with the patch. In a study, healthy participants wore three lidocaine patches on their backs for 12 hours on and 12 hours off during 24 hours. Lidocaine levels were highest at 11 hours. At the end of the 24 hours, there was still some lidocaine left in the bloodstream. (Food and Drug Administration, 2022)

Individuals with PHN may notice a difference in pain intensity after four hours of using the patch. (Rowbotham, M. C. et al., 1996) (Food and Drug Administration, 2022) Experts may suggest using patches for four weeks for those who experience pain after their shingles rash disappears. However, if there is still pain after these four weeks, it is recommended to see a pain specialist. (Gross, G. E. et al., 2020)

Side Effects

Common side effects are typically mild skin reactions where the patch is.  These reactions are usually temporary and will disappear within a few minutes or hours. Examples include: (Food and Drug Administration, 2022)

• Irritation
• Itchiness
• Abnormal or burning sensation
• Redness
• Swelling
• Blisters
• Bruises
• Skin bumps
• Skin color changes
• Skin peeling

Potentially serious side effects include: (Food and Drug Administration, 2022)

Serious Allergic Reaction

• Severe allergic reactions are rare, but it is possible.
• Symptoms include breathing problems, itchiness, and rash.

Methemoglobinemia

• Methemoglobinemia is a condition that makes it hard for red blood cells to carry oxygen.
• Individuals may experience symptoms of blue-looking skin, headache, lightheadedness, shortness of breath, abnormal heart rhythm, or seizures.

Using too many lidocaine patches to cover large parts of the body or using the patches longer than 12 hours within 24 hours may cause side effects that may include heart-related effects, such as a slow heart rate and low blood pressure.  Individuals may also experience the following side effects (Food and Drug Administration, 2022)

• Hot or cold sensation
• Numbness
• Dizziness
• Ringing ears
• Lightheadedness
• Mood changes
• Drowsiness to unconsciousness
• Vision changes
• Seizures
• Tremors
• Vomiting

Injury Medical Chiropractic & Functional Medicine Clinic

Injury Medical Chiropractic and Functional Medicine Clinic works with primary healthcare providers and specialists to develop an optimal health and wellness solution. We focus on what works for you to relieve pain, restore function, and prevent injury. Regarding musculoskeletal pain, specialists like chiropractors, acupuncturists, and massage therapists can help mitigate the pain through spinal adjustments that help the body realign itself. They can also work with other medical professionals to integrate a treatment plan to resolve musculoskeletal issues.

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Sciatica Causes and Treatments

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References

National Library of Medicine. MedlinePlus. (2025). Lidocaine transdermal patch. Retrieved from medlineplus.gov/druginfo/meds/a603026.html

Food and Drug Administration. (2022). Lidoderm label. Retrieved from www.accessdata.fda.gov/spl/data/eedfe43b-1019-19a0-e053-2995a90a7696/eedfe43b-1019-19a0-e053-2995a90a7696.xml

Department of Veterans Affairs/Department of Defense. (2022). VA/DoD clinical practice guideline for the diagnosis and treatment of low back pain. Retrieved from www.healthquality.va.gov/guidelines/Pain/lbp/VADoDLBPCPGFinal508.pdf

North American Spine Society. (2020). Evidence-based clinical guidelines for multidisciplinary spine care: diagnosis and treatment of low back pain. www.spine.org/Portals/0/assets/downloads/ResearchClinicalCare/Guidelines/LowBackPain.pdf

National Library of Medicine. DailyMed. (2018). Label: lidocaine patch. Retrieved from dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=5c66f3b9-6e04-47ab-8d94-21e89ceec154

Food and Drug Administration. (2021). Ztlido label. Retrieved from www.ztlido.com/wp-content/uploads/2022/12/ZTlido-LABEL.pdf

National Library of Medicine. DailyMed. (2025). Lidocaine-lidocaine hydrochloride injection, solution. Retrieved from dailymed.nlm.nih.gov/dailymed/lookup.cfm?setid=f1b26274-a55e-4321-b96c-ce0df830f205

Santana, J. A., Klass, S., & Felix, E. R. (2020). The Efficacy, Effectiveness and Safety of 5% Transdermal Lidocaine Patch for Chronic Low Back Pain: A Narrative Review. PM & R: the journal of injury, function, and rehabilitation, 12(12), 1260–1267. doi.org/10.1002/pmrj.12366

Rowbotham, M. C., Davies, P. S., Verkempinck, C., & Galer, B. S. (1996). Lidocaine patch: double-blind controlled study of a new treatment method for post-herpetic neuralgia. Pain, 65(1), 39–44. doi.org/10.1016/0304-3959(95)00146-8

Gross, G. E., Eisert, L., Doerr, H. W., Fickenscher, H., Knuf, M., Maier, P., Maschke, M., Müller, R., Pleyer, U., Schäfer, M., Sunderkötter, C., Werner, R. N., Wutzler, P., & Nast, A. (2020). S2k guidelines for the diagnosis and treatment of herpes zoster and postherpetic neuralgia. Journal der Deutschen Dermatologischen Gesellschaft = Journal of the German Society of Dermatology: JDDG, 18(1), 55–78. doi.org/10.1111/ddg.14013