At moderate dosages it also acts as an aromatase inhibitor which stops testosterone being converted to estrogen therefore increasing free testosterone cialis no prescription Echinoclathrines A C Alkaloid P388 and A549m HT29 152 88 Haliclona tulearensis Halitulin Alkaloid P388, A549, and MEL 28 154 89 Agelas longissima, Homaxinella Longamide Alkaloid P388 155, 156 90 Iotrochota purpurea Matemone Alkaloid NSCLC N6 L16, Mia PaCa 2, and DU145 157, 158 91 Spongsori