Sildenafil drug, molecular model. Sildenafil, marketed as Viagra, is used to treat erectile dysfunction. Sildenafil is an inhibitor of the phosphodiesterase enzyme involved in regulation of blood flow. Atoms are represented as spheres and are colour-coded: carbon (grey), hydrogen (white), oxygen (red), nitrogen (blue) and sulphur (yellow). | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / GREG WILLIAMS |
Taille de l’image : | 6000 px × 5100 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |