Sirova Powder is a blend of spiramycin & trimethoprim which acts additively. Sirova Powder has an activity against Gram positive and Gram negative bacteria such as Staphylococci, Streptococci, Colibacilli, Pasteurella, Salmonella, Bordetella, Haemophilus, Klebsiella, Campylobacter and Spriochetes. Sirova Powder is very effective against mainly Mycoplasmas. Sirova Powder is equally effective against Toxoplasma & Chlamydiae. Powder is indicated against infectious caused by organisms sensitive to spiramycin & trimethoprim in ruminants & poultry.