Can You Abuse Flector Patch

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The management of acute and chronic pain often includes opioid therapy. In both the acute and chronic pain settings, however, opioids have several disadvantages including risk of nausea and vomiting, somnolence, constipation, respiratory depression, androgen deficiency, physical dependence, and tolerance. Opioid medications also carry a risk of abuse or addiction by either the patient or non-medical users. For these reasons, consideration of non-opioid strategies for pain management is beneficial. While opioids will certainly continue to have a place in pain management despite their disadvantages, the use of non-opioid medication options may limit the amount of opioid necessary or even result in improved pain control. In fact, given that the majority of both acute and chronic pain is thought to be complex and multifactorial, a multimodal analgesic approach is ideal for management.

The purpose of this article is to review selected non-opioid medications used in either acute or chronic.Acute Pain ManagementIV Acetaminophen (Ofirmev)While oral and rectal acetaminophen have been available for quite some time, in 2010 an intravenous (IV) formulation was approved by the FDA. IV acetaminophen (Ofirmev) is indicated for use in management of mild to moderate pain and moderate to severe pain with adjunctive opioid analgesics. 1 When studied as an adjunct to opioids following major surgery, IV acetaminophen demonstrated superiority over placebo in decreasing pain scores.

2,3 IV acetaminophen has also been shown to decrease opioid consumption in major surgery by nearly one-third compared with placebo. 2 The most common adverse effects seen with IV acetaminophen were constipation, nausea, injection site pain, pruritus, and vomiting. 2 For adults and adolescents weighing greater than 50 kg, the recommended dosage of IV acetaminophen is 1000 mg every 6 hours or 650 mg every 4 hours, with a maximum single dose of 1000 mg. 1 For adults and adolescents weighing under 50 kg as well as children ≥2 to 12 years old, the recommended dosing is 15 mg/kg every 6 hours or 12.5 mg/kg every 4 hours to a maximum of 75 mg/kg per day.

1 As with other acetaminophen formulations, caution should be given to avoid exceeding the recommended maximum dose of 4000 mg per day to prevent potentially fatal hepatic injury. No benefit over oral or rectal acetaminophen has been demonstrated at this time; therefore use of IV acetaminophen would most likely be reserved for those patients who are unable to tolerate oral medications.IV Ibuprofen (Caldolor)With ongoing drug shortage concerns with ketorolac, 4 IV ibuprofen (Caldolor) may begin to see increased usage. Approved in 2009, IV ibuprofen is approved for management of mild to moderate pain and moderate to severe pain as an adjunct to opioid analgesics in adult patients. 5 Similar to IV acetaminophen, IV ibuprofen has been shown to decrease pain scores and opioid usage in studies evaluating postoperative pain. 6,7 The dosing for IV ibuprofen is 400 mg to 800 mg every 6 hours as necessary with a maximum of 3200 mg per day.

5 The product must be diluted prior to administration and then infused over a period of 30 minutes, which is a disadvantage compared with ketorolac, which is available in prefilled syringes and single-dose vials for IV push or IM administration. Like all other non-steroidal anti-inflammatory drugs (NSAIDs), caution should be used when considering use of IV ibuprofen in patients with heart failure, kidney impairment, and those with a history of gastrointestinal bleeding, due to risk of serious cardiovascular and gastrointestinal events. Of note, IV ibuprofen is contraindicated for the treatment of perioperative pain in the setting of coronary artery bypass graft surgery. 5 Compares with ketorolac, which is limited to a usage of 5 days, IV ibuprofen does not have a limit on duration of use, although one would expect this formulation to be limited to time periods when patients are unable to tolerate oral medications. An important medication safety consideration is the availability of another ibuprofen formulation for injection, ibuprofen lysine, for use in the closure of patent ductus arteriosus in premature infants.

Given the differing indications and dosing between these 2 IV formulations of ibuprofen, inadvertent substitution of these products could result in patient harm. Another important safety concern to note is that in September 2012, Cumberland Pharmaceuticals, the manufacturer of IV ibuprofen, issued a statement recommending that only Baxter Viaflex and Hospira 250 mL bags be used when diluting the product due to reports received indicating possible incompatibility with B Braun PAB, Hospira VisIV, and Baxter AVIVA bags.

8Chronic Pain ManagementAs noted above, a multimodal approach to t is often considered ideal, especially in the setting of chronic pain, where use of long-term opioids can increase the risk of many medication-related problems. Below, several non-opioid medication options for use in both nociceptive and neuropathic pain are reviewed.Anticonvulsantsand pregabalin (Lyrica) have established efficacy and are typically considered first-line medications in various types of neuropathic pain. 9 Gabapentin is initially started at a lower dose (300 to 600 mg per day) to limit side effects such as drowsiness and dizziness and titrated as tolerated to an effective dosage typically considered to be between 1800 and 3600 mg per day. In 2011 a once-daily gabapentin formulation (Gralise) was approved.

10 This product was intended to overcome the dose-limiting side effects of drowsiness and dizziness often seen with regular-release gabapentin by allowing for plasma levels to peak overnight. Currently the once-daily gabapentin formulation is approved for the management of postherpetic neuralgia and has a recommended dose titration to reach a daily dose of 1800 mg within 2 weeks. 10 There is no evidence that the once-daily gabapentin formulation confers better tolerability compared with regular-release gabapentin; however, it may be a reasonable option in patients who are unable to reach effective doses of regular-release gabapentin due to side effects. Other anticonvulsants such as lamotrigine, lacosamide, topiramate, carbamazepine, oxcarbazepine, and valproic acid have been studied in the setting of neuropathic pain but are typically considered only when patients have failed multiple other agents due to their limited evidence. 9Serotonin and norepinephrine reuptake inhibitorsDuloxetine (Cymbalta) is FDA approved for management of diabetic peripheral neuropathy, fibromyalgia, and chronic musculoskeletal pain. 11 A desirable effect of duloxetine in the setting of chronic pain is thought to be improvement in depression. Duloxetine is typically dosed for painful conditions as 30 mg once daily and then titrated to 60 mg once daily after 1 week if tolerated.

9 The most common adverse effect seen with duloxetine is nausea.11 Due to reported cases of hepatic failure with use of duloxetine, its use in patients with hepatic impairment or alcohol abuse is not recommended. 11 Venlafaxine has also demonstrated efficacy in the setting of diabetic peripheral neuropathy 9 and is available generically, whereas duloxetine is still available only as a brand-name medication.Tricyclic antidepressantsTricyclic antidepressants such as amitriptyline, desipramine, and nortriptyline have shown benefit in the setting of postherpetic neuralgia, post-stroke pain, and polyneuropathy. 12 These agents are often preferred due to low cost; however, their use may be limited by their anticholineric side effects (xerostomia, constipation, urinary retention) and potential for cardiac toxicity. Because of these potential side effects, caution is advised for use in elderly patients. A desirable effect of these agents is improvement in depression and sleep disruption, common problems among chronic pain patients.

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Amitriptyline, desipramine, and nortriptyline are all initially dosed as 25 mg at bedtime and increased by 25 mg every 3 to 7 days as tolerated to a maximum of 150 mg at bedtime.9 TCAs used in the setting of chronic pain are typically increased until pain is adequately controlled or side effects occur. As with many agents used in chronic pain, an adequate trial with TCAs is considered to be several weeks.Topical NSAIDsVarious formulations of topical diclofenac are available, including Voltaren gel, Pennsaid solution, and Flector patch, and are used in the setting of osteoarthritis or musculoskeletal pain. In clinical practice, these agents are often considered when there is a contraindication to oral NSAID therapy, such as cardiovascular disease, kidney impairment, or history of gastrointestinal bleed, as the systemic absorption of diclofenac with these formulations is low. For example, the amount of diclofenac that is systemically absorbed from Voltaren gel is on average 6% of the systemic exposure from an oral form of diclofenac. 13 Voltaren gel is approved for the relief of the pain of osteoarthritis of joints such as the knees and those of the hands but was not evaluated for use on joints of the spine, hip, or shoulder.13 Recommended dosing for Voltaren gel is 4 grams to the affected area 4 times daily on joints of the lower extremities and 2 grams to the affected area 4 times daily to joints of the upper extremities. 13 Pennsaid is indicated for management of osteoarthritis of the knees only and its recommended dose is 40 drops on each painful knee 4 times a day. 14 Flector patch is dosed as 1 patch to painful area twice daily and is indicated for acute pain due to minor strains, sprains, and contusions.

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15 No direct comparison between the various topical diclofenac formulations has been performed and in clinical practice choice of an agent is often left to patient preference of a particular dosage formulation: gel, solution, or patch.Dr. McKnight is a clinical pharmacist at the University of North Carolina Hospitals Pain Management Center in Chapel Hill, North CarolinaReferences. Ofirmev package insert. San Diego, CA: Cadence Pharmaceuticals, Inc; 2010. Sinatra RS, Jahr JS, Reynolds LW, Viscusi ER, Groudine SB, Payen-Champenois C.

Efficacy and safety of single and repeated administration of 1 gram intravenous acetaminophen injection (paracetamol) for pain management after major orthopedic surgery. 2005;102(4):822-831.

Memis D, Inal M, Kavalci G, Sezer A, Sut N. Intravenous paracetamol reduced the use of opioids, extubation time, and opioid-related adverse effects after major surgery in intensive care unit. 2010;25(3):458-462.

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FDA website. Accessed December 14, 2012. Caldolor package insert. Nashville, TN: Cumberland Pharmaceuticals; 2009. Singla N, Rock A, Pavliv L. A multi-center, randomized, double-blind placebo-controlled trial of intravenous-ibuprofen (IV-ibuprofen) for treatment of pain in post-operative orthopedic adult patients. 20-1293.

Kroll PB, Meadows L, Rock A, Pavliv L. A multicenter, randomized, double-blind, placebo-controlled trial of intravenous ibuprofen (IV-ibuprofen) in the management of postoperative pain following abdominal hysterectomy. 2011;11(1):23-32. Caldolor.

Cumberland Pharmaceuticals, Inc, website. Accessed December 14, 2012. Dworkin R, O’Connor AB, Backonja M, et al. Pharmacologic management of neuropathic pain: evidence-based recommendations. 2007;132(3):237-251. Gralise package insert. Menlo Park, CA: Depomed Inc; 2012.

Cymbalta package insert. Indianapolis, IN: Eli Lilly and Company; 2012.

Sindrup SH, Otto M, Finnerup NB, Jensen TS. Antidepressants in the treatment of neuropathic pain. Basic Clin Pharmacol Toxicol. 2005;96:399-409. Voltaren gel package insert. Chadds Ford, PA: Endo Pharmaceuticals, Inc; 2009.

Pennsaid package insert. Mansfield, MA: Covidien; 2010. Flector patch package insert. Mission, KS: Pfizer Inc; 2011.

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This information describes Flector Patch, including how to apply it, guidelines to follow while wearing it, and side effects to look out for. About Flector PatchFlector Patch (diclofenac epolamine topical patch) is a pain medication. It helps relieve pain and inflammation (swelling) in a small area of your body, such as from a sprain, strain, bruise, or arthritis. It contains a nonsteroidal anti-inflammatory drug (NSAID).Flector Patch is put on your skin.

This means the NSAID is absorbed through your skin and the medication goes right to the area where the pain is. Other areas of your body don’t get as much of the medication.

Before You Apply Flector Patch. Make sure your skin is clean. Wash off any dirt, lotion, or moisturizer on the area where you will apply Flector Patch. They will keep the patch from sticking to your skin. If the area where you’re applying Flector Patch needs to be washed, wash it with a mild soap, rinse the area with water, and pat it completely dry.

If you have hair on the area where you will put Flector Patch, clip the hair with scissors. Don’t shave the area.How to Apply Flector Patch. Don’t put Flector Patch on damaged skin, such as where there’s a burn, wound, infection, rash, or eczema. Don’t put the Flector Patch on an area that has received radiation.To apply Flector Patch:. Take off the clear film on the patch. Put the patch on the area where you have the most pain. Press the patch firmly with your hand for about 20 to 30 seconds.

It needs to stick completely to your skin. Wash your hands.Each package contains more than 1 Flector Patch. Be sure to reseal the package after you open it. This will keep the remaining patches from drying out.Store the patches at room temperature. Don’t put them in the refrigerator or expose them to heat. After You Apply Flector Patch.

Don’t get the patch wet. Don’t shower or take a bath with the patch on. Don’t put a warm or cold pack over the patch. Don’t let the patch to come into contact with your eyes.

If it does, flush your eye with water right away and call your doctor. If the patch starts to peel off, tape the edges down.Use only the number of patches prescribed by your doctor. How to Remove Flector Patch. Peel the patch off your skin. Fold the patch so the sticky sides are together. Throw the used patch in the trash where children and pets can’t get to it. Wash your hands.

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Side EffectsIf you develop any of the symptoms listed below, remove the patch right away and rinse the area with water. Rash or skin reaction in the area where the patch is placed. Dizziness. Swelling in your arms or legs. Weight gain. Headache.

Worsening of high blood pressure or kidney, liver, or heart diseasePrecautions. Don’t use this medication if you have ever developed a rash, itching, asthma, or any allergic-type reaction after taking aspirin or other NSAIDs. Don’t take any oral NSAIDs while you’re using the patch (unless your doctor tells you it’s okay).

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