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. 2020 May 14;12(5):451. doi: 10.3390/pharmaceutics12050451

Table 5.

Distribution of temazepam in blood and brain at different sampling time points.

Formulation Organ Time Points (h)
0.5 h 1 h 2 h 4h 6 h
99mTc-temazepam suspension Blood 0.022 ± 0.005 0.036 ± 0.004 0.032 ± 0.002 0.021 ± 0.001 0.013 ± 0.001
99mTc-temazepam NLC-1 Blood 0.036 ± 0.004 0.050 ± 0.003 0.043 ± 0.005 0.040 ± 0.006 0.035 ± 0.007
99mTc-temazepam suspension Brain 0.020 ± 0.007 0.025 ± 0.004 0.035 ± 0.003 0.019 ± 0.004 0.012 ± 0.004
99mTc-temazepam NLC-1 Brain 0.040 ± 0.002 0.070 ± 0.003 0.053 ± 0.007 0.045 ± 0.005 0.040 ± 0.004
99mTc-temazepam suspension Brain/blood 0.90 0.69 1.09 0.90 0.92
99mTc-temazepam NLC-1 Brain/blood 1.11 1.40 1.23 1.13 1.14

The rats were orally administered a mean of 77.5 μCi of the 99mTc-temazepam suspension or the 99mTc-temazepam NLC-1 formulation. The radioactivity was measured in percentage of the administered dose per gram. Data are expressed as mean ± S.D.