- Buy Brand Viagra per pill : $8.56
- Buy Viagra per pill : $1.08
- Buy Viagra Soft per pill : $1.11
- Buy Viagra Soft + Cialis Soft per pill : $5.05
- Buy Viagra + Cialis per pill : $3.30
- Buy Viagra + Cialis + Levitra per pill : $3.40
Marketing Exclusivity For First-in-Class Drugs Has Shortened To 2.5 Years
BOSTON, September 9, 2009 â€" Marketing exclusivity periods for first-in-class drugs have fallen dramatically in recent decades â€" from a median of 10.2 years in the 1970s to 2.5 years in the early part of this decade â€" underscoring the... 