Country: South Africa
Language: English
Source: South African Health Products Regulatory Authority (SAHPRA)
Lennon
ARGENT-EZE® CREAM SCHEDULING STATUS: S4 PROPRIETARY NAME (and dosage form): ARGENT-EZE ® CREAM COMPOSITION: Each gram contains 10 mg Silver Sulphadiazine . Preserved with: Propyl Hydroxybenzoate 0,05% m/v Methyl Hydroxybenzoate 0,05% m/v PHARMACOLOGICAL CLASSIFICATION: A 14.2 Wound Dressing PHARMACOLOGICAL ACTION: Silver Sulphadiazine has antibacterial activity especially against Pseudomonas aeruginosa. As silver sulphadiazne is relatively insoluble it reacts very slowly with the chloride and protein components of tissue exudate to form silver chloride, silver protein complexes and sodium sulphadiazine. Sulphadiazine is now available to exert its bacteriostatic effect and is very slowly absorbed. The mechanisms for silver ion release are complex, but silver chloride is very slightly soluble and slowly releases silver ions, which are then free to exert their bactericidal effect. These silver ions are thought to be reversibly adsorbed by bacterial cells by association with SH groups or histidine residues in the bacterial protein of the transport system across the cell wall. NaCl + AgSd ------> AgCl + NaSd AgCl <=======> Ag + + Cl - AgCl + NaCl <=======> Na + + AgCl 2 - Thus silver sulphadiazine acts as a sustained release depot of silver and sulphadiazine at the wound surface. The slow liberation of silver does not cause the rapid and extensive depletion of chloride ion experienced when silver nitrate solutions are used, and thus electrolyte disturbances are minimised. INDICATIONS: Silver sulphadiazine is a topical antibacterial agent for the prevention of infection in severe burns being particularly effective against Gram-negative organisms such asPseudomonas aeruginosa and pyocyanea, the most common cause of burn wound infec Read the complete document