Analysis of undeclared synthetic phosphodiesterase-5 inhibitors in dietary supplements and herbal matrices by LC–ESI–MS and LC–UV

THE EFFECT OF THE SPECIFIC PHOSPHODIESTERASE (PDE) INHIBITORS ON HUMAN AND RABBIT CAVERNOUS TISSUE IN VITRO AND IN VIVO

Christian G. Stief, Stefan Ückert, Armin Becker et al. · The Journal of Urology · 1998 · 113 citations

Medicine, Pharmacology, Pharmacotherapy +14

Development of an assay for the simultaneous determination of sildenfail (viagra) and its metabolite (UK-103,320) using automated sequential trace enrichment of dialysates and high-performance liquid chromatography

Jonathan D. Cooper, D.C. Muirhead, J.E Taylor et al. · Journal of Chromatography B Biomedical Sciences and Applications · 1997 · 108 citations

Pharmacy, Pharmaceutical Analysis, Pharmaceutics +10

Identification of a new analogue of sildenafil added illegally to a functional food marketed for penile erectile dysfunction

Mi-Rae Shin, M. K. Hong, W.-S. Kim et al. · Food Additives & Contaminants · 2003 · 99 citations

Pharmacy, Medicinal Chemistry, Pharmaceutical Analysis +11

Determinaton of sildenafil citrate and related substances in the commercial products and tablet dosage form using HPLC

Nidal Daraghmeh, Mahmoud Al-Omari, Adnan A. Badwan et al. · Journal of Pharmaceutical and Biomedical Analysis · 2001 · 87 citations

Pharmacy, Pharmaceutical Analysis, Pharmacology +7

Simultaneous assay of sildenafil and desmethylsildenafil in human plasma using liquid chromatography–tandem mass spectrometry on silica column with aqueous–organic mobile phase

Angela Eerkes, Tom Addison, Naidong Weng · Journal of Chromatography B · 2002 · 81 citations

Pharmacy, Pharmaceutical Analysis, Pharmacology +16