Drug Facts
Composition & Profile
Identifiers & Packaging
HOW SUPPLIED Available in tubes of 100 g. Each gram of gel contains 30 mg of diclofenac sodium. 100 g tube – NDC 76420-025-01 (relabeled from NDC 0115-1483-61) Storage: Store at 20° to 25°C (68° to 77°F); excursions permitted between 15° to 30°C (59° to 86°F) [see USP Controlled Room Temperature]. Protect from heat. Avoid freezing. † Voltaren ® is a registered trademark of Novartis. Relabeled by: Enovachem PHARMACEUTICALS Torrance, CA 90501; PRINCIPAL DISPLAY PANEL 1
- HOW SUPPLIED Available in tubes of 100 g. Each gram of gel contains 30 mg of diclofenac sodium. 100 g tube – NDC 76420-025-01 (relabeled from NDC 0115-1483-61) Storage: Store at 20° to 25°C (68° to 77°F); excursions permitted between 15° to 30°C (59° to 86°F) [see USP Controlled Room Temperature]. Protect from heat. Avoid freezing. † Voltaren ® is a registered trademark of Novartis. Relabeled by: Enovachem PHARMACEUTICALS Torrance, CA 90501
- PRINCIPAL DISPLAY PANEL 1
Overview
Diclofenac Sodium Gel, 3%, contains the active ingredient, diclofenac sodium, in a clear, transparent, colorless to slightly yellow gel base. Diclofenac sodium is a white to slightly yellow crystalline powder. It is freely soluble in methanol, soluble in ethanol, sparingly soluble in water, slightly soluble in acetone, and partially insoluble in ether. The chemical name for diclofenac sodium is: Sodium [o-(2,6-dichloranilino) phenyl] acetate Diclofenac sodium has a molecular weight of 318.13. The CAS number is CAS-15307-79-6. The structural formula is represented below: Diclofenac Sodium Gel, 3% also contains benzyl alcohol, hydroxyethyl cellulose, methoxypolyethylene glycol 350, PEG-60 hydrogenated castor oil, and purified water. 1 g of Diclofenac Sodium Gel, 3% contains 30 mg of the active substance, diclofenac sodium. 352da3e2-figure-01
Indications & Usage
Diclofenac Sodium Gel, 3% is indicated for the topical treatment of actinic keratoses (AK). Sun avoidance is indicated during therapy.
Dosage & Administration
Diclofenac Sodium Gel, 3% is applied to lesion areas twice daily. It is to be smoothed onto the affected skin gently. The amount needed depends upon the size of the lesion site. Assure that enough Diclofenac Sodium Gel, 3% is applied to adequately cover each lesion. Normally 0.5 g of gel is used on each 5 cm x 5 cm lesion site. The recommended duration of therapy is from 60 days to 90 days. Complete healing of the lesion(s) or optimal therapeutic effect may not be evident for up to 30 days following cessation of therapy. Lesions that do not respond to therapy should be carefully re-evaluated and management reconsidered.
Warnings & Precautions
WARNINGS As with other NSAIDs, anaphylactoid reactions may occur in patients without prior exposure to diclofenac. Diclofenac sodium should be given with caution to patients with the aspirin triad. The triad typically occurs in asthmatic patients who experience rhinitis with or without nasal polyps, or who exhibit severe, potentially fatal bronchospasm after taking aspirin or other NSAIDs. Cardiovascular Thrombotic Events Clinical trials of several COX-2 selective and nonselective NSAIDs of up to three years duration have shown an increased risk of serious cardiovascular (CV) thrombotic events, including myocardial infarction (MI) and stroke, which can be fatal. Based on available data, it is unclear that the risk for CV thrombotic events is similar for all NSAIDs. The relative increase in serious CV thrombotic events over baseline conferred by NSAID use appears to be similar in those with and without known CV disease or risk factors for CV disease. However, patients with known CV disease or risk factors had a higher absolute incidence of excess serious CV thrombotic events, due to their increased baseline rate. Some observational studies found that this increased risk of serious CV thrombotic events began as early as the first weeks of treatment. The increase in CV thrombotic risk has been observed most consistently at higher doses. To minimize the potential risk for an adverse CV event in NSAID-treated patients, use the lowest effective dose for the shortest duration possible. Physicians and patients should remain alert for the development of such events, throughout the entire treatment course, even in the absence of previous CV symptoms. Patients should be informed about the symptoms of serious CV events and the steps to take if they occur. There is no consistent evidence that concurrent use of aspirin mitigates the increased risk of serious CV thrombotic events associated with NSAID use. The concurrent use of aspirin and an NSAID, such as diclofenac, increases the risk of serious gastrointestinal (GI) events. Status Post Coronary Artery Bypass Graft (CABG) Surgery Two large, controlled clinical trials of a COX-2 selective NSAID for the treatment of pain in the first 10–14 days following CABG surgery found an increased incidence of myocardial infarction and stroke. NSAIDs are contraindicated in the setting of CABG. Post-MI Patients Observational studies conducted in the Danish National Registry have demonstrated that patients treated with NSAIDs in the post-MI period were at increased risk of reinfarction, CV-related death, and all-cause mortality beginning in the first week of treatment. In this same cohort, the incidence of death in the first year post MI was 20 per 100 person years in NSAID-treated patients compared to 12 per 100 person years in non-NSAID exposed patients. Although the absolute rate of death declined somewhat after the first year post-MI, the increased relative risk of death in NSAID users persisted over at least the next four years of follow-up. Avoid the use of diclofenac sodium gel, 3% in patients with a recent MI unless the benefits are expected to outweigh the risk of recurrent CV thrombotic events. If diclofenac sodium gel, 3% is used in patients with a recent MI, monitor patients for signs of cardiac ischemia. Heart Failure and Edema The Coxib and traditional NSAID Trialists’ Collaboration meta-analysis of randomized controlled trials demonstrated an approximately two-fold increase in hospitalizations for heart failure in COX-2 selective-treated patients and nonselective NSAID-treated patients compared to placebo-treated patients. In a Danish National Registry study of patients with heart failure, NSAID use increased the risk of MI, hospitalization for heart failure, and death. Additionally, fluid retention and edema have been observed in some patients treated with NSAIDs. Use of diclofenac may blunt the CV effects of several therapeutic agents used to treat these medical conditions [e.g., diuretics, ACE inhibitors, or angiotensin receptor blockers (ARBs)]. Avoid the use of diclofenac sodium gel, 3% in patients with severe heart failure unless the benefits are expected to outweigh the risk of worsening heart failure. If diclofenac sodium gel, 3% is used in patients with severe heart failure, monitor patients for signs of worsening heart failure.
Boxed Warning
RISK OF SERIOUS CARDIOVASCULAR EVENTS Cardiovascular Thrombotic Events - Nonsteroidal anti-inflammatory drugs (NSAIDs) cause an increased risk of serious cardiovascular thrombotic events, including myocardial infarction and stroke, which can be fatal. This risk may occur early in treatment and may increase with duration of use. - Diclofenac Sodium Gel, 3% is contraindicated in the setting of coronary artery bypass graft (CABG) surgery.
Contraindications
Diclofenac Sodium Gel, 3% is contraindicated in patients with a known hypersensitivity to diclofenac, benzyl alcohol and/or polyethylene glycol monomethyl ether 350. Diclofenac Sodium Gel, 3% is contraindicated in the following patients: - In the setting of coronary artery bypass graft (CABG) surgery.
Adverse Reactions
Of the 423 patients evaluable for safety in adequate and well-controlled trials, 211 were treated with diclofenac sodium gel, 3% drug product and 212 were treated with a vehicle gel. Eighty-seven percent (87%) of the diclofenac sodium gel, 3%-treated patients (183 patients) and 84% of the vehicle-treated patients (178 patients) experienced one or more adverse events (AEs) during the studies. The majority of these reactions were mild to moderate in severity and resolved upon discontinuation of therapy. Of the 211 patients treated with diclofenac sodium gel, 3%, 172 (82%) experienced AEs involving skin and the application site compared to 160 (75%) vehicle-treated patients. Application site reactions (ASRs) were the most frequent AEs in both diclofenac sodium gel, 3%-and vehicle-treated groups. Of note, four reactions, contact dermatitis, rash, dry skin and exfoliation (scaling) were significantly more prevalent in the diclofenac sodium gel, 3% group than in the vehicle-treated patients. Eighteen percent of diclofenac sodium gel, 3%-treated patients and 4% of vehicle-treated patients discontinued from the clinical trials due to adverse events (whether considered related to treatment or not). These discontinuations were mainly due to skin irritation or related cutaneous adverse reactions. Table 1 below presents the AEs reported at an incidence of >1% for patients treated with either diclofenac sodium gel, 3% or vehicle (60- and 90-day treatment groups) during the phase 3 studies. Table 1. Adverse Events Reported (>1% in Any Treatment Group) During Diclofenac Sodium Gel, 3% Phase 3 Clinical Trials Incidences for 60-Day and 90-Day Treatments 60-day Treatment 90-day Treatment Diclofenac Sodium Gel, 3% (%) N=48 Gel Vehicle (%) N=49 Diclofenac Sodium Gel, 3% (%) N=114 Gel Vehicle (%) N=114 BODY AS A WHOLE 21 20 20 18 Abdominal Pain 2 0 1 0 Accidental Injury 0 0 4 2 Allergic Reaction 0 0 1 3 Asthenia 0 0 2 0 Back Pain 4 0 2 2 Chest Pain 2 0 1 0 Chills 0 2 0 0 Flu Syndrome 10 6 1 4 Headache 0 6 7 6 Infection 4 6 4 5 Neck Pain 0 0 2 0 Pain 2 0 2 2 CARDIOVASCULAR SYSTEM 2 4 3 1 Hypertension 2 0 1 0 Migraine 0 2 1 0 Phlebitis 0 2 0 0 DIGESTIVE SYSTEM 4 0 6 8 Constipation 0 0 0 2 Diarrhea 2 0 2 3 Dyspepsia 2 0 3 4 METABOLICS AND NUTRITIONAL DISORDERS 2 8 7 2 Creatine Phosphokinase Increased 0 0 4 1 Creatinine Increased 2 2 0 1 Edema 0 2 0 0 Hypercholesteremia 0 2 1 0 Hyperglycemia 0 2 1 0 SGOT Increased 0 0 3 0 SGPT Increased 0 0 2 0 MUSCULOSKELETAL SYSTEM 4 0 3 4 Arthralgia 2 0 0 2 Arthrosis 2 0 0 0 Myalgia 2 0 3 1 NERVOUS SYSTEM 2 2 2 5 Anxiety 0 2 0 1 Dizziness 0 0 0 4 Hypokinesia 2 0 0 0 RESPIRATORY SYSTEM 8 8 7 6 Asthma 2 0 0 0 Dyspnea 2 0 2 0 Pharyngitis 2 8 2 4 Pneumonia 2 0 0 1 Rhinitis 2 2 2 2 Sinusitis 0 0 2 0 SKIN AND APPENDAGES 75 86 86 71 Acne 0 2 0 1 Application Site Reaction 75 71 84 70 Acne 0 4 1 0 Alopecia 2 0 1 1 Contact Dermatitis 19 4 33 4 Dry Skin 27 12 25 17 Edema 4 0 3 0 Exfoliation 6 4 24 13 Hyperesthesia 0 0 3 1 Pain 15 22 26 30 Paresthesia 8 4 20 20 Photosensitivity Reaction 0 2 3 0 Pruritus 31 59 52 45 Rash 35 20 46 17 Vesiculobullous Rash 0 0 4 1 Contact Dermatitis 2 0 0 0 Dry Skin 0 4 3 0 Herpes Simplex 0 2 0 0 Maculopapular Rash 0 2 0 0 Pain 2 2 1 0 Pruritus 4 6 4 1 Rash 2 10 4 0 Skin Carcinoma 0 6 2 2 Skin Nodule 0 2 0 0 Skin Ulcer 2 0 1 0 SPECIAL SENSES 2 0 4 2 Conjunctivitis 2 0 4 1 Eye Pain 0 2 2 0 UROGENITAL SYSTEM 0 0 4 5 Hematuria 0 0 2 1 OTHER 0 0 0 3 Procedure 0 0 0 3 Skin and Appendages Adverse Events Reported for diclofenac sodium gel, 3% at Less Than 1% Incidence in the Phase 3 Studies: skin hypertrophy, paresthesia, seborrhea, urticaria, application site reactions (skin carcinoma, hypertonia, skin hypertrophy lacrimation disorder, maculopapular rash, purpuric rash, vasodilation). Adverse Reactions Reported for Oral Diclofenac Dosage Form (not topical diclofenac sodium gel, 3%): *Incidence Greater than 1% marked with asterisk. Body as a Whole: abdominal pain or cramps*, headache*, fluid retention*, abdominal distention*, malaise, swelling of lips and tongue, photosensitivity, anaphylaxis, anaphylactoid reactions, chest pain. Cardiovascular: hypertension, congestive heart failure, palpitations, flushing, tachycardia, premature ventricular contractions, myocardial infarction, hypotension. Digestive: diarrhea*, indigestion*, nausea*, constipation*, flatulence*, liver test abnormalities*, PUB*, i.e., peptic ulcer, with or without bleeding and/or perforation, or bleeding without ulcer, vomiting, jaundice, melena, esophageal lesions, aphthous stomatitis, dry mouth and mucous membranes, bloody diarrhea, hepatitis, hepatic necrosis, cirrhosis, hepatorenal syndrome, appetite change, pancreatitis with or without concomitant hepatitis, colitis, intestinal perforation. Hemic and Lymphatic: hemoglobin decrease, leukopenia, thrombocytopenia, eosinophilia, hemolytic, anemia, aplastic anemia, agranulocytosis, purpura, allergic purpura, bruising. Metabolic and Nutritional Disorders: azotemia, hypoglycemia, weight loss. Nervous System: dizziness*, insomnia, drowsiness, depression, diplopia, anxiety, irritability, aseptic meningitis, convulsions, paresthesia, memory disturbance, nightmares, tremor, tic, abnormal coordination, disorientation, psychotic reaction. Respiratory: epistaxis, asthma, laryngeal edema, dyspnea, hyperventilation, edema of pharynx. Skin and Appendages: rash*, pruritus*, alopecia, urticaria, eczema, dermatitis, bullous eruption, erythema multiforme major, angioedema, Stevens-Johnson syndrome, excess perspiration, exfoliative dermatitis. Special Senses: tinnitus*, blurred vision, taste disorder, reversible and irreversible hearing loss, scotoma, vitreous floaters, night blindness, amblyopia. Urogenital: nephrotic syndrome, proteinuria, oliguria, interstitial nephritis, papillary necrosis, acute renal failure, urinary frequency, nocturia, hematuria, impotence, vaginal bleeding.
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