Each 1 gm contains :
Sulphadiazine sodium ………………625 mg-
(eq.to sulphadiazine base 574.5 mg).
-Trimethoprim ……………..125 mg
Potentiated sulphonamides sequentially inhibit enzymes in the folic acid pathway , thereby inhibiting bacterial thymidine synthesis . The sulfonamide blocks the conversion of para-aminobenzoic acid (PABA) to dihydrofolic acid (DFA) , and trimethoprim blocks the conversion of DFA to tetrahydrofolic acid by inhibiting dihydrofolate reductase . The potentiated sulphonamides have a fairly broad spectrum of activity . Gram positive bacteria that are generally susceptible include most Streptococci , many strains of Staphylococcus and Nocardia . Many gram negative organisms of the family Enterobacteriaceae are susceptible to the potentiated sulphonamides, but not Pseudomonas aeruginosa .Some protozoa (pneumocystis carinii , Coccidia and Toxoplasma ) are also inhibited by the combonation . Potentiated sulphonamides reportedly have little activity against most anaerobes.
For the treatment of diseases sensitive to trimethoprim / sulfadiazine in chickens , in particular enteric and respiratory bacterial infections.
Broiler chickens
Route : Orally via drinking water.
30 mg of combined active ingrediants / kg.b.wt.
42.86 gm of product / 1000 kg.b.wt.(4 gm/10 liter)or(0,5gm/liter) daily in drinking water , given in 2 equal doses up to 7 days.
Adverse effects associated with sulfonamides include allergic reactions , Type II and Type III hypersensitivity , arthropathy , anemia , thrombocytopenia & hepatopathy.
Meat : 10 days.
Not used in laying chickens.
Store at temperature not more than 30 C to be used immediately after opening .
Plastic containers : 100 , 250 , 500 gm and 1 kg.