(sodium tetradecyl sulfate) Injection
FOR INTRAVENOUS USE ONLY
Sodium tetradecyl sulfate is an anionic surfactant which occurs as a white, waxy solid. The structural formula is as follows:
C14H28NaS04 7-Ethyl -2-methyl -4-hendecanol sulfate sodium salt MW 316.44
Sotradecol® (sodium tetradecyl sulfate injection) is a sterile nonpyrogenic solution for intravenous use as a sclerosing agent.
1% (10 mg/mL): Each mL contains sodium tetradecyl sulfate 10 mg, benzyl alcohol 0.02 mL and dibasic sodium phosphate, anhydrous 4.0 mg in Water for Injection. pH 7.9; monobasic sodium phosphate and/or sodium hydroxide added, if needed, for pH adjustment.
3% (30 mg/mL): Each mL contains sodium tetradecyl sulfate 30 mg, benzyl alcohol 0.02 mL and dibasic sodium phosphate, anhydrous 9.0 mg in Water for Injection. pH 7.9; monobasic sodium phosphate and/or sodium hydroxide added, if needed, for pH adjustment.
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Sotradecol® (sodium tetradecyl) (sodium tetradecyl sulfate injection) is indicated in the treatment of small uncomplicated varicose veins of the lower extremities that show simple dilation with competent valves. The benefit-to-risk ratio should be considered in selected patients who are great surgical risks.
DOSAGE AND ADMINISTRATION
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration. Do not use if precipitated or discolored.
Sotradecol® (sodium tetradecyl sulfate injection) is for intravenous use only. The strength of solution required depends on the size and degree of varicosity. In general, the 1% solution will be found most useful with the 3% solution preferred for larger varicosities. The dosage should be kept small, using 0.5 to 2 mL (preferably 1 mL maximum) for each injection, and the maximum single treatment should not exceed 10 mL.
Sotradecol® (sodium tetradecyl sulfate injection)
1% (10 mg/mL) - 2 mL vials; in packages of 5 (NDC 65974-162-02)
3% (30 mg/mL) - 2 mL vials; in packages of 5 (NDC 65974-163-02)
Store at 20°C to 25°C (68°F to 77°F) (See USP Controlled Room Temperature).
Manufactured for: Angiodynamics, Inc. Queensbury, NewYork12804. Tel: 1-800-772-6446. Manufactured by: Bioniche Teo, Inverin, Co. Galway, Ireland. Sotradecol (sodium tetradecyl) is a registered trademark used by Bioniche under license from a third party. Issued: October 2006. Revised: December 2006. FDA rev date: 11/12/2004
Local reactions consisting of pain, urticaria or ulceration may occur at the site of injection. A permanent discoloration may remain along the path of the sclerosed vein segment. Sloughing and necrosis of tissue may occur following extravasation of the drug. (See WARNINGS section).
Allergic reactions such as hives, asthma, hay fever and anaphylactic shock have been reported. Mild systemic reactions that have been reported include headache, nausea and vomiting. (See WARNINGS section).
At least six deaths have been reported with the use of Sotradecol® (sodium tetradecyl) . Four cases of anaphylactic shock leading to death have been reported in patients who received Sotradecol® (sodium tetradecyl) . One of these four patients reported a history of asthma, a contraindication to the administration of Sotradecol®. (See WARNINGS section).
One death has been reported in a patient who received Sotradecol® (sodium tetradecyl) and who had been receiving an an ovulatory agent. Another death (fatal pulmonary embolism) has been reported in a 36-year-old female treated with sodium tetradecyl acetate and who was not taking oral contraceptives.
No well-controlled studies have been performed on patients taking anovulatory agents. The physician must use judgment and evaluate any patient taking anti ovulatory drugs prior to initiating treatment with Sotradecol® (sodium tetradecyl) . (See ADVERSE REACTIONS section).
Sotradecol® (sodium tetradecyl) (sodium tetradecyl sulfate injection) should only be administered by a physician familiar with venous anatomy and the diagnosis and treatment of conditions affecting the venous system and familiar with proper injection technique. Severe adverse local effects, including tissue necrosis, may occur following extravasation; therefore, extreme care in intravenous needle placement and using the minimal effective volume at each injection site are important.
Emergency resuscitation equipment should be immediately available. Allergic reactions, including fatal anaphylaxis, have been reported. As a precaution against anaphylactic shock, it is recommended that 0.5 mL of Sotradecol® (sodium tetradecyl) be injected into a varicosity, followed by observation of the patient for several hours before administration of a second or larger dose. The possibility of an anaphylactic reaction should be kept in mind, and the physician should be prepared to treat it appropriately.
Because of the danger of thrombosis extension into the deep venous system, thorough preinjection evaluation for valvular competency should be carried out and slow injections with a small amount (not over 2 mL) of the preparation should be injected into the varicosity. Deep venous patency must be determined by angiography or noninvasive testing such as duplex ultrasound. Venous sclerotherapy should not be undertaken if tests such as Trendelenberg and Perthes, and angiography show significant valvular or deep venous incompetence.
The development of deep vein thrombosis and pulmonary embolism have been reported following sclerotherapy treatment of superficial varicosities. Patients should have post-treatment follow-up of sufficient duration to assess for the development of deep vein thrombosis. Embolism may occur as long as four weeks after injection of sodium tetradecyl sulfate. Adequate post-treatment compression may decrease the incidence of deep vein thrombosis.
Carcinogenesis, Mutagenesis, Impairment Of Fertility
When tested in the L5178YTK +/- mouse lymphoma assay, sodium tetradecyl sulfate did not induce a dose-related increase in the frequency of thymidine kinase-deficient mutants and, therefore, was judged to be non mutagenic in this system. However, no long-term animal carcinogenicity studies with sodium tetradecyl sulfate have been performed.
Teratogenic Effects - Pregnancy Category C. Animal reproduction studies have not been conducted with Sotradecol® (sodium tetradecyl) . It is also not known whether Sotradecol® (sodium tetradecyl) can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. Sotradecol® (sodium tetradecyl) should be given to a pregnant woman only if clearly needed and the benefits outweigh the risks.
It is not known whether this drug is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when SotradecoP is administered to a nursing woman.
Safety and effectiveness in pediatric patients have not been established.
No information provided.
Sotradecol® (sodium tetradecyl) (sodium tetradecyl sulfate injection) is contraindicated in previous hypersensitivity reactions to the drug; in acute superficial thrombophlebitis; valvular or deep vein incompetence; huge superficial veins with wide open communications to deeper veins; phlebitis migrans; acute cellulitis; allergic conditions; acute infections; varicosities caused by abdominal and pelvic tumors unless the tumor has been removed; bedridden patients; such uncontrolled systemic diseases as diabetes, toxic hyperthyroidism, tuberculosis, asthma, neoplasm, sepsis, blood dyscrasias and acute respiratory or skin diseases.
Sotradecol® (sodium tetradecyl) (sodium tetradecyl sulfate injection) is a sclerosing agent. Intravenous Injection causes intima inflammation and thrombus formation. This usually occludes the injected vein. Subsequent formation of fibrous tissue results in partial or complete vein obliteration that may or may not be permanent.
The intravenous LD„ of sodium tetradecyl sulfate in mice was reported to be 90 ± 5 mg/kg.
In the rat, the acute intravenous LD„ of sodium tetradecyl sulfate was estimated to be between 72 mg/kg and 108 mg/kg.
Purified sodium tetradecyl sulfate was found to have an LD„ of 2 g/kg when administered orally by stomach tube as a 25% aqueous solution to rats. In rats given 0.15 g/kg in drinking water for 30 days, no appreciable toxicity was seen, although some growth inhibition was discernible.
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