Does Dalacin C Phosphate 150 mg/ml solution for injection require dilution before intramuscular or intravenous administration?

Dalacin C Phosphate 150 mg/ml solution for injection should be used undiluted intramuscularly but must be diluted before intravenous administration and infused over at least 10–60 minutes, with an infusion concentration no greater than 18 mg/ml and a rate no greater than 30 mg/minute.