rafa laboratories ltd - phenoxymethylpenicillin as potassium - קפליות - phenoxymethylpenicillin as potassium 500 mg - phenoxymethylpenicillin - phenoxymethylpenicillin - for susceptible microorganisms. to treat group a haemolytic infections of the upper respiratory tract using a twice daily regimen (1 g. bid in adults, 0.5 mg bid in children).