Penicillin and Metronidazole in Treatment of Peritonsillar Abscess

Inclusion Criteria: * referring doctor suspects peritonsillar abscess * patient is voluntary * patient has daily access to his/her e-mail * patient speaks and understands Finnish of Swedish * female patients have adequate birth-control method * patient has peritonsillar abscess Exclusion Criteria: * allergy to penicillin * allergy to metronidazole * use of metronidazole in preceding one month * pregnancy * breast-feeding * renal insufficiency * liver insufficiency * alcoholism (drunk at least once a week) * participant in another clinical trial at the moment * treatment of peritonsillar abscess requires in-patient care * tonsillectomy during the next 30 days * army recruit