Local and systemic tolerability of suprofen. Experience with intravenous administration and infusion in healthy volunteers (1st comm.).

Local and systemic tolerability of alpha-methyl-4-(2-thienylcarbonyl)-phenyl acetic acid (suprofen, Suprol 200 mg/ml intravenous injection and suprofen 200 mg/ml infusion were in the present single-blind crossover study assessed and compared with those of placebo i.v. 12 volunteers each were in random fashion assigned to one of the three treatment groups; for a period of 7 days the subjects received daily 2 intravenous injections or infusions of suprofen or placebo, respectively. Investigator and patients appreciation of local tolerability revealed that no pain or discomfort occurred in 98% of the subjects on suprofen and in 100% of those on placebo. The incidence of limited, moderate or mild, adverse reactions was in the suprofen group higher than in the placebo group. The laboratory tests for the treatment groups indicated no negative effects on either the hematopoietic organs or the liver function; no abnormal changes in ECG and cardiovascular parameters were observed during the treatment period. Tests of the renal parameters, i.e., creatinine clearance, creatinine, and urea (BUN), revealed negative shifts in the first two parameters, whereas BUN remained uninfluenced. On the basis of these results it can be stated that 200 mg/ml of suprofen, given either as intravenous injection or as infusion, were both locally and systemically well tolerated even on administration b.i.d. The more or less unfavorable shifts in the renal parameters, which occurred with placebo as well as with suprofen, require further investigation.