Yes, you can use lidocaine and capsaicin together. The two are not only safe to combine but often recommended as a pair for nerve-related pain conditions like diabetic neuropathy and postherpetic neuralgia (nerve pain after shingles). There is even an FDA-listed prescription patch called Trubrexa that contains both ingredients in a single product, combining 4.75% lidocaine with 0.025% capsaicin.
Why the Combination Works
Lidocaine and capsaicin relieve pain through completely different pathways, which is what makes them complementary rather than redundant. Lidocaine numbs nerves by blocking the sodium channels they use to send pain signals. Capsaicin works by overstimulating specific pain receptors (called TRPV1) on nerve endings until those receptors become desensitized and stop firing. Over time, repeated capsaicin use essentially exhausts the nerve’s ability to transmit pain.
There’s also an interesting interaction at the cellular level. Research from Harvard Medical School showed that when a lidocaine derivative is applied alongside capsaicin, the capsaicin opens channels on pain-sensing neurons that allow the lidocaine compound to pass directly inside the nerve cell. Once inside, it blocks sodium channels from within, producing long-lasting pain inhibition specifically in the neurons responsible for pain signaling. This selective entry means nearby nerves handling touch and movement are left alone.
What the Evidence Shows for Pain Relief
A clinical study in patients with diabetic nerve pain compared capsaicin patches to lidocaine patches over 24 weeks. The capsaicin group saw a 40.7% reduction in average daily pain scores, while the lidocaine group saw a 21.1% reduction. A broader look at the capsaicin data showed a 46% mean pain reduction. Both treatments produced statistically significant relief compared to placebo, but capsaicin outperformed lidocaine as a standalone treatment.
Clinical guidelines published in Pain Medicine in 2025 reflect this evidence. For both diabetic neuropathy and postherpetic neuralgia, expert panels recommend capsaicin and local anesthetics (like lidocaine) with strong consensus. The guidelines note that combination topical medications often use a lidocaine base, and that the effectiveness of these combination therapies is an area of active clinical interest.
Available Products and Concentrations
You have a few options depending on whether you want a single combined product or separate applications.
Combined patch: Trubrexa is a prescription transdermal patch containing 4.75% lidocaine and 0.025% capsaicin in a 2-inch by 2-inch adhesive patch with extended time release. This is the most convenient option if your doctor agrees it fits your situation.
Separate products: You can also use individual lidocaine and capsaicin products. Over-the-counter lidocaine patches go up to 4% concentration, while prescription patches contain 5%. For capsaicin, OTC creams and patches typically range from 0.025% to 0.075%. There is also a prescription-only 8% capsaicin patch used specifically for diabetic foot pain and postherpetic neuralgia, though this high-concentration version is applied in a clinical setting rather than at home.
How to Apply Them Together
If you’re using separate products, the order matters. Clinical protocols for the high-concentration capsaicin patch call for applying a lidocaine patch to the treatment area about 2 hours before the capsaicin goes on. The reason is practical: capsaicin causes a burning sensation when first applied, and pre-numbing the skin with lidocaine makes this much more tolerable. Even with lower-concentration OTC capsaicin creams, applying lidocaine first can take the edge off the initial burn.
If you’re layering a cream and a patch (rather than two patches), apply the cream first and let it absorb before placing the patch over or near the same area. Avoid stacking two patches directly on top of each other unless specifically directed, since this can affect how much of each drug absorbs through your skin. The Trubrexa label specifically notes that when using it alongside other lidocaine-containing products, you need to account for the total amount of lidocaine being absorbed across all products.
Handling Capsaicin Safely
Capsaicin is the compound that makes chili peppers hot, and it will irritate any sensitive tissue it touches. If you’re applying a capsaicin cream by hand rather than using a patch, wash your hands thoroughly with soap and water afterward. If the cream is being applied to your hands (for joint pain, for example), wait at least 30 minutes before washing so the medication has time to absorb. Until your hands are clean, do not touch your eyes, nose, or mouth.
The burning sensation from capsaicin is normal and expected, especially during the first week or two of use. It typically fades as the nerve endings become desensitized, which is the whole point of the treatment. This is where lidocaine’s numbing effect is particularly helpful early on, reducing that initial discomfort while the capsaicin does its longer-term work on the pain receptors underneath.
Who Benefits Most From This Combination
The strongest evidence supports using lidocaine and capsaicin together for two conditions: diabetic peripheral neuropathy (burning or tingling pain in the feet and hands from diabetes) and postherpetic neuralgia (lingering nerve pain after a shingles outbreak). Both conditions involve damaged or overly sensitized nerves, which is exactly what these two topical agents target.
People who get incomplete relief from either product alone are the most logical candidates for combining them. Since lidocaine provides fast but temporary numbing while capsaicin builds longer-lasting desensitization over days to weeks, the two fill in each other’s gaps. Lidocaine covers the short term, capsaicin remodels the pain response over time, and together they address both the immediate discomfort and the underlying nerve hypersensitivity.