Hypertensive effect of midodrine and its main metabolite de-glymidodrine in comparison with their enantiomers on blood pressure in rats: Luzi A., 1Bossù E., 1Quaglia M.G, and Palmery M. Institute of Pharmacology and Pharmacognosy, University of Rome “la Sapienza” 1 Pharmaceutical studies department University of Rome “La Sapienza”