Why are lidocaine patches removed after 12 hours

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Prescription lidocaine transdermal (Dermalid, Lidoderm, Ztildo) is used to relieve the pain of post-herpetic neuralgia (PHN; burning, stabbing pains, or aches that may last for months or years after a shingles infection).

Nonprescription (over-the-counter) lidocaine (Absorbine Jr, Aspercreme, Lidocare, Salonpas, others) is also available to relieve minor pain in shoulders, arms, neck and legs in adults and children 12 years of age and older.

Who should not use lidocaine patch

Lidocaine is in a class of medications called local anesthetics. It works by stopping nerves from sending pain signals.

Prescription lidocaine transdermal comes as a 5% patch (Dermalid, Lidoderm) and as a 1.8% topical system (Ztlido) to apply to the skin.

Prescription lidocaine transdermal is applied only once a day as needed for pain. Never apply more than 3 of the lidocaine 5% patch or lidocaine 1.8% topical systems at one time, and never wear them for more than 12 hours per day (12 hours on and 12 hours off).

Follow the directions on your prescription label carefully, and as

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