Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Amitriptyline (Elavil) and lidocaine viscous (Xylocaine) are both medications that can help with pain, but they work in different ways and are used for different conditions. Amitriptyline is a tricyclic antidepressant (TCA) FDA-approved to treat depression, but is often used off-label for nerve pain and migraine prevention. It is taken orally, usually once a day. Common side effects include sleepiness, weight gain, and dizziness. It can interact with many other medications, such as sedatives and antihistamines. On the other hand, lidocaine viscous is a topical, local anesthetic used to numb painful areas in the mouth and throat, as well as to prevent gagging during dental procedures. Lidocaine viscous can cause side effects like dizziness and drowsiness, and using too much can lead to serious issues like seizures and heart problems. Unlike amitriptyline, lidocaine viscous is not used for depression or nerve pain and does not have the same drug interactions. Both medications are available as a lower-cost generic.
Amitriptyline
Lidocaine 5% patch (Lidoderm)
Amitriptyline
Lidocaine 5% patch (Lidoderm)
Summary of Elavil vs. Lidoderm
Summary for Tricyclic antidepressant
Prescription only
Amitriptyline is FDA approved to treat depression. But it isn't as commonly used today as other antidepressants because it can cause a lot of side effects, such as sleepiness and weight gain. In addition, amitriptyline has many interactions with other medications, including other antidepressants, sedatives, and antihistamines. But despite the side effects and interactions, amitriptyline is often used off label for nerve pain due to diabetes and migraine prevention. While its brand name Elavil is no longer available, amitriptyline is available as a generic medication.
Summary for Local anesthetic
Prescription only
Lidocaine 5% patch (Lidoderm) is a prescription medication used to relieve nerve pain caused by a shingles infection, also called postherpetic neuralgia (PHN). It's a local anesthetic that works by numbing your nerves to help reduce pain. You apply the patch directly to the painful area of your skin once a day, and it can be worn for up to 12 hours in a 24-hour period. Common side effects include temporary skin irritation, redness, and a mild burning sensation where the patch is applied.