Viagra will get competition from Levitra and Cialis
September 2003
Viagra will get competition from Levitra and Cialis.
Levitra is out now. Cialis later this year.
They all work the same...they block phosphodiesterase-5 enzymes, cause vasodilation, and increase blood flow to the penis.
Practical advice for a better career, with unlimited access to CE
Pharmacy Technician's Letter includes:
- 12 issues every year, with brief articles about new meds and hot topics
- 120+ CE courses, including the popular CE-in-the-Letter
- Helpful, in-depth Technician Tutorials
- Access to the entire archive
Already a subscriber? Log in
Volume pricing available. Get a quote