When given by intravenous or intramuscular administration, peak levels of Rocephin are detected in systemic circulation within half an hour, according to Drugs.com. Rocephin, also known as ceftriaxone, is a cephalosporin antibiotic used to treat various bacterial infections.
Doctors prescribe Rocephin to treat infections of varying severity, explains Drugs.com. Patients usually receive it between four and 14 days, depending on the infection. This medication is in the same class of drugs as the penicillin family, and hypersensitivity reactions are possible in people with penicillin allergies. Rocephin has activity against some bacteria that have developed resistance to earlier generations of penicillins and is considered a broad spectrum antibiotic.