Therefore, in these patients it would be advisable to monitor serum sulfa concentrations. In the treatment of burn wounds involving extensive areas of the body, the serum sulfa concentrations may approach adult therapeutic levels (8 to 12mg %). In considering the use of topical proteolytic enzymes in conjunction with Silver sulfadiazine cream, USP 1% the possibility should be noted that silver may inactivate such enzymes. Discontinuation of silver sulfadiazine cream, USP 1% should be weighed against the therapeutic benefit being achieved. If hepatic and renal functions become impaired and elimination of the drug decreases accumulation may occur. The use of silver sulfadiazine cream, USP 1% in some cases of glucose-6-phosphate dehydrogenase-deficient individuals may be hazardous, as hemolysis may occur. However, the incidence of clinically reported fungal superinfection is low. If allergic reactions attributable to treatment with silver sulfadiazine occur, continuation of therapy must be weighed against the potential hazards of the particular allergic reaction.įungal proliferation in and below the eschar may occur. There is a potential cross-sensitivity between silver sulfadiazine and other sulfonamides. Some of the reactions which have been associated with sulfonamides are as follows: blood dyscrasias including agranulocytosis, aplastic anemia, thrombocytopenia, leukopenia, and hemolytic anemia dermatologic and allergic reactions, including life-threatening cutaneous reactions gastrointestinal reactions, hepatitis and hepatocellular necrosis CNS reactions and toxic nephrosis. Although few have been reported, it is possible that any adverse reaction associated with sulfonamides may occur. Silver sulfadiazine is not a carbonic anhydrase inhibitor and may be useful in situations where such agents are contraindicated.Ībsorption of silver sulfadiazine varies depending upon the percent of body surface area and the extent of the tissue damage. Silver Sulfadiazine Number of Sensitive Strains / Sulfadiazine Cream, USP 1% Concentration of Silver sulfadiazine acts only on the cell membrane and cell wall to produce its bactericidal effect. Studies utilizing radioactive micronized silver sulfadiazine, electron microscopy, and biochemical techniques have revealed that the mechanism of action of silver sulfadiazine on bacteria differs from silver nitrate and sodium sulfadiazine. Sufficient data have been obtained to demonstrate that silver sulfadiazine will inhibit bacteria that are resistant to other antimicrobial agents and that the compound is superior to sulfadiazine. Results from in vitro testing are listed below. It is bactericidal for many gram-negative and gram-positive bacteria as well as being effective against yeast. Silver sulfadiazine has broad antimicrobial activity.
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