Experiment results also showed that papaverine has been absorbed and distributed by 30～60 mg after intramuscular injection or intravenous injection,the concentration of drug acted on the remote end was very tiny, by calculating only several microgram could reach fingers.
而且有研究表明罂粟碱30～60 mg肌注或静脉注射后经过吸收和分布,作用于远端的药物浓度甚微,经计算到达手指仅有几微克。
参考来源 - 罂粟碱不同给药途径对兔腹壁浅动脉皮瓣血管阻力影响的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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