FOM-Na was investigated on its distribution after a continuous intravenous drip infusion in 3 healthy adult volunteers, and its serum levels and urinary excretion were pharmacokinetically analyzed, while the excreted substance into urine was also analyzed with GC/MS. The results obtained are summarized as follows:
1. The distribution volume of FOM-Na in one-compartment open model was 0.183 L/kg, half life in human body 1.66 hours and renal clearance 0.0737 L/hr/kg.
2. With these pharmacokinetic constants, the mean values following various doses demonstrated almost equal irrespective of its dosage schedule, keeping an almost constant level in each individualtested.
3. The area under serum level-time curve was approximately 216-Eg-Ehr/ml per 1g (potency), and increased in proportion to an infused dose within the range of 1-6g (potency). Three consecutive administrations showed no trend of accumulation of the agent in the serum.
4. Urinary excretion of the agent was found to be very fast, and its recovery rate from urine within 10-11hours after the completion of an i.v. drip infusion was approximately 95-99%.
5. As a result of GC/MS on the substance excreted into urine, it was noted that FOM-Na was not metabolized in human body and excreted into urine in its original form.
6. There was seen no specific change in electrocardiogram during and/or after an intravenous drip infusion in 1hour of 2g (potency) FOM-Na dissolved in a 300ml 5% glucose solution.
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