Overview
11 DESCRIPTION The chemical name of isosulfan blue injection 1% is N-[4- [[4-(diethylamino)phenyl] (2,5-disulfophenyl) methylene]-2,5-cyclohexadien-1-ylidene]-N-ethylethanaminium hydroxide, inner salt, sodium salt. Its structural formula is: ISOSULFAN BLUE Isosulfan blue injection 1% is a clear dark blue, sterile, non-pyrogenic aqueous solution for subcutaneous administration.
Mechanism of Action
12 CLINICAL PHARMACOLOGY 12.2 Pharmacodynamics Following subcutaneous administration, isosulfan blue injection 1% binds to serum proteins and is picked up by the lymphatic vessels. Thus, the lymphatic vessels are delineated by the blue dye. 12.3 Pharmacokinetics Up to 10% of the subcutaneously administered dose of isosulfan blue injection 1% is excreted unchanged in the urine in 24 hours in humans.
Indications
- 1 INDICATIONS AND USAGE Isosulfan blue injection 1% upon subcutaneous administration, delineates the lymphatic vessels draining the region of injection. It is an adjunct to lymphography in: primary and secondary lymphedema of the extremities; chyluria, chylous ascites or chylothorax; lymph node involvement by primary or secondary neoplasm; lymph node response to therapeutic modalities ( 1.1 ). 1.1 Lymphatic Vessel Delineation Isosulfan blue injection 1% upon subcutaneous administration, delineates lymphatic vessels draining the region of injection.
Common Doses
- 3 mL
- 30 mg
- 1 mL
Dosage
2 DOSAGE AND ADMINISTRATION Isosulfan blue injection 1% is to be administered subcutaneously, one-half (1/2) mL into three (3) interdigital spaces of each extremity per study. A maximum dose of 3 mL (30 mg) isosulfan blue is, therefore, injected ( 2.1 ). 2.1 Subcutaneous administration Isosulfan blue injection 1% is to be administered subcutaneously, one-half (1/2) mL into three (3) interdigital spaces of each extremity per study. A maximum dose of 3 mL (30 mg) isosulfan blue is, therefore, injected. Discard unused portion. 2.
Contraindications
- 4 CONTRAINDICATIONS Isosulfan blue injection 1% is contraindicated in those individuals with known hypersensitivity to triphenylmethane or related compounds. Hypersensitivity to triphenylmethane or related compounds ( 4 ).
Side Effects
- 6 ADVERSE REACTIONS Hypersensitivity Reactions: Hypersensitivity reactions occur in approximately 2% of patients and include life threatening anaphylactic reactions with respiratory distress, shock, angioedema, urticaria, pruritus. A death has been reported following IV administration of a similar compound ( 6 ). To report SUSPECTED ADVERSE REACTIONS, contact Mylan at 1-877-446-3679 (1-877-4-INFO-RX) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.
Interactions
- 7 DRUG INTERACTIONS No drug interactions have been identified with isosulfan blue injection 1%. No drug interactions have been identified for isosulfan blue injection 1% ( 7 ).