Disease which are caused by penicillin-susceptible organisms, such as angina tonsillaris, bacterial bronchitis, acute otitis media, acute sinusitis, scarlet fever, furuncles, abscesses: supportive therapy in bacterial pneumonia in as much as parenteral therapy is not necessary; infection or danger of infection by haemolytic streptococci for the prophylaxis of recurrences in rheumatic fever, polyarthritis, bacterial endocarditis, glomerulonephritis, particularly after tonsillectomy; prophylaxis against infection in stomatology (e.g, tooth extractions).