Medically reviewed by Drugs.com. Last updated on Jan 22, 2021.
Disclaimer: This drug has not been found by FDA to be safe and effective, and this labeling has not been approved by FDA. For further information about unapproved drugs, click here.
K2K Patch ®
(Menthol 4% / Lidocaine 4% topical patch)
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The K2K Patch brand name has been discontinued in the U.S. If generic versions of this product have been approved by the FDA, there may be generic equivalents available.
K2K Patch® is a prescription topical patch containing 10 articulated patches (5 per resealable pouch x 2 pouches).
Menthol is present in a 4% concentration (w/w). The empirical formula for menthol is C10H20O with a molecular weight of 156.27 g/mol. The chemical name is (1R,2S,5R)-2-isopropyl-5-methylcyclohexanol.
The structural formula is:
** Menthol **
Lidocaine is present in a 4% concentration (w/w). The molecular weight of lidocaine is 234.34 g/mol. It has an empirical formula of C14H22N2O and is chemically designated as 2-(diethylamino)-N-(2,6-dimethylphenyl) acetamide.
The structural formula is:
Menthol has local anesthetic and counterirritant qualities, and it also acts as a weak kappa (κ) opioid receptor agonist. Menthol acts to chemically trigger the cold-sensitive TRPM-8 receptors in the skin - responsible for the well-known cooling sensation it stimulates when applied directly to the skin. Menthol's analgesic properties are not fully understood, however they are mediated through a selective activation of κ-opioid receptors. Menthol also blocks voltage-sensitive sodium channels, reducing neural activity that may stimulate muscle tissue.
Lidocaine is a topical anesthetic and stabilizes the neuronal membrane by inhibiting the ionic fluxes required for the initiation and conduction of impulses, thereby effecting local anesthetic action.
Drug-drug interactions have not been clinically assessed with K2K Patch ®
INDICATIONS AND USE:
K2K Patch® is a formulation used to aid patients in the pharmaceutical management of topical mild to moderate acute or chronic aches or pain. Muscle or joint pain can stem from many disease states - musculoligamentous strains, simple backache, tendonitis, osteoarthritis, rheumatoid arthritis, peripheral neuropathies, such as diabetic neuropathy, post herpetic neuralgia, and other complex regional pains.
This patch has also been used as adjunct therapy to certain types of headaches, but it is advised to use with caution when applying in order to avoid eye contact. If instructed otherwise by your practitioner, it may be used for other conditions as well.
Because of the possibility of sedation, patients should be cautioned regarding the operation of serious machinery or automobiles, and activities made hazardous by decreased alertness.
Known hypersensitivity to menthol, lidocaine, or any of the topical amide-like anesthetic preparations. .
CARCINOGENESIS, MUTAGENESIS, FERTILITY IMPAIRMENT:
Non-clinical toxicity studies to determine the potential of this topical preparation to cause carcinogenicity or mutagenicity have not been performed. The effect of the product on fertility has not been evaluated in animals.
USE IN PEDIATRIC & GERIATRIC POPULATION:
Safety and effectiveness in pediatric and geriatric patients have not been established.
The safety of K2K Patch® has not been established during pregnancy. There are no well-controlled studies in pregnant women.
Excessive dosage, or short interval between doses, can result in high plasma levels and serious adverse effects. Patients should be instructed to strictly adhere to the recommended dosage and administration guidelines set forth in this literature and on your prescription label. The management of serious adverse reactions may require the use of resuscitative equipment, oxygen or other resuscitative drugs.
The effect of K2K Patch® on the nursing infant has not been evaluated.
- The most common adverse reactions are application site reactions, including dermatitis, itching or scaling. These tend to be dose-limiting and diminish with time.
- Serious adverse experiences following the administration of K2K Patch® are similar in nature to those observed in other amide anesthetic-containing agents. These adverse experiences are, in general, dose-related and may result from high plasma levels caused by excessive dosage, rapid absorption, or may result from hypersensitivity, idiosyncrasy, or a diminished tolerance on the part of the patient. Serious adverse experiences are generally systemic in nature.
Store at room temperature at 68°F to 77°F (20°C to 25° C). Protect from excessive moisture. Keep away from heat or sunlight. The product can be considered safe and effective to use when maintained under these recommended conditions within the posted expiration date.
There have been no reports of over-dosage with K2K Patch®. Signs of over-dosage would be consistent to those of other anesthetic-based preparations - vomiting, drowsiness, coma, respiratory depression, and seizures. In the case of an over-dosage, discontinue the product immediately, treat the patient symptomatically, institute supportive measures, and call 9-1-1 if necessary.
HOW IS K2K Patch® SUPPLIED:
- 10 Articulated Patches [ (5 per Re-sealable Pouch) x 2]
Kaylana Pharm, Inc
23678 Calabasas Road
Calabasas, CA 91302
(insert updated Jan 2015)
Read this information sheet intended for patients prior to beginning medication therapy and each time you get a refill. If you have any questions, please consult your doctor or pharmacist. Inform your doctor if your condition does not improve or if it worsens.
This information may not include all of the information needed to use K2K Patch® safely and effectively.
** For Topical Use Only **
What constitutes K2K Patch® ?
This is a topical patch consisting of the topical anesthetic lidocaine and the analgesic, menthol.
Why was K2K Patch® prescribed by my doctor?
When unwrapped and accurately placed against the skin, the patch is applied to the skin and greatly assists sufferers in the management of mild to moderate topical acute aches or pains.
We are not concerned simply with the masking of serious pain triggers. The experiencing of acute or chronic topical pain is a reflection and the body’s method of telling you that something (potentially serious, potentially causing long term damage) needs attention. If the cause of recurrent pain is identified, the pain needs to be assessed by the appropriate healthcare professional, and a diagnosis made. This root cause diagnosis will dictate the course of treatment.
Lidocaine and menthol have been used separately for centuries to reap the pain relieving and numbing effects, however we have created a combination of the two that is absorbed through the dermal layer of the skin and instantly has a positive effect on the topical pain. The combination of these two ingredients is a highly effective combination that work together to lessen the discomfort, while the root cause is being managed and treated by your healthcare team.
What side effects should I expect with K2K Patch®
- Common (≥10%): redness, itching, flaking of the skin following application NOTE: serious side effects are, in general, related to accidental toxicity of medication by applying considerably more than directed by your doctor or pharmacist or by ingesting the contents of the patch.
- Please disclose to your doctor of pharmacist any current Rx or OTC medications you are taking. Excessive alcohol usage, since it may increase the potential for dizziness, confusion, lightheadedness and orthostatic hypotension.
Call your healthcare provider right away if you experience any of the following warning signs or any other unusual symptoms that concern you:
- Shortness of breath
- Swelling or numbness of the tongue or throat
- Severe headache or vomiting
- Dizziness or faintness
- Changes in vision or speech
Tell your healthcare provider if you:
- are hypersensitive (allergic) to any of the active ingredients used in the preparation of this product: menthol, lidocaine, local anesthetics, or any of the inactive ingredients listed below in this insert.
- develop an undiagnosed rash following administration - the reaction will often be immediate, however occasionally may occur weeks or even months following treatment initiation.
- are breastfeeding. It is unknown if the patch absorbs to an extent where the breast milk may be affected (Preg Category IV).
This list is not comprehensive to the possible side effects or interactions involving any of the active or inactive ingredients. For more information, you may consider speaking with your doctor or pharmacist. You may report any side effects to FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
DIRECTIONS FOR USE
This patch is recommended for use in patients ages 12 years and older.
- Determine area of patch application. If the pain area is smaller than the patch, patches may be cut into smaller sizes with scissors. Safely discard the remaining unused pieces of cut patches where children and pets cannot get to them.
- Remove the transparent release liner (clear plastic backing) before application of patches to the skin. Apply immediately after removal from the protective envelope.
- Apply 1 to 2 patches to the affected area so that the patch covers most of the painful area. Apply patch only once during each 24-hr period (12 hours on, 12 hours off).
- Remove patch if irritation occurs.
K2K Patch® storage:
Store product at room temperature at 68°F to 77°F (20°C to 25°C). Keep away from heat or sunlight. Protect from excessive moisture. Discard product after expiration date posted on the product label.
DO NOT use the product after the expiration date printed on the box.
Additional information regarding the safe and effective use of the K2K Patch®
Medicines are sometimes prescribed for purposes other than those listed in a patient information leaflet. Do not use this product for another indication. Your doctor has prescribed this drug for you and you alone. Do not give this drug to anyone else, even if they have the same condition.
**KEEP OUT OF REACH OF CHILDREN**
This leaflet provides the most important information about K2K Patch®. If you would like more information, talk with your healthcare provider or pharmacist. There is additional information in the following sections intended for healthcare professionals.
Ingredients in K2K Patch®?
Water, Aloe barbadesis Leaf (Aloe Vera Gel) Juice, Glycerol, EDTA Disodium salt, Sodium Polyacrylate, Diazolidinyl Urea, Polysorbate 80, Propylparaben, Iodopropynyl Butylcarbamate, Methylparaben, Citrus Medica Limonum (Lemon) Peel Oil
PRINCIPAL DISPLAY PANEL
Pain Relieving Patch
Qty: 10 Patches:
(5 per Resealable Pouch x 2)
levomenthol and lidocaine patch
|Labeler - Kaylana Pharm, Inc. (079472471)|