비아그라 - 개요
The next nonprescription or herbal solutions may perhaps interact with sildenafil: cimetidine (Tagamet HB), St. John's wort. Be sure you Enable your health practitioner and pharmacist know you are getting these medicines before you start getting sildenafil.Sildenafil improves the outcome of NO by inhibiting phosphodiesterase sort five (PDE5), and t