It is almost always used together with other antibiotics, except when given to prevent Haemophilus influenzae type b and meningococcal disease in people who have been exposed to those bacteria.
On skoro uvek koristi sa drugim antibioticima, izuzev kad se primenjuje sprečavanju Haemophilus influenzae tipa b i meningokokalne bolesti kod ljudi koji su bili izloženi tim bakterijama.