Please Select Acyclovir Adipex Aldara Allegra Alesse Ambien Bontril Celebrex Cialis Cipro Clarinex Clarityn Cyclobenzaprine Denavir Didrex Fioricet Flexeril Flonase Generic Prozac Ionamin Levitra Meridia Nasonex Nexium Ortho Tri-Cyclen Paxil Phentermine Prevacid Prilosec Propecia Reductil Renova Retin-A Skelaxin Soma Sonata Tenuate Tramadol Ultram Uprima Valtrex Vaniqa Viagra Vioxx Xenical Zanaflex Zyban Zyrtec Denavir Denavir is a prescription medication that shortens the duration and severity of cold sores Denavir on average heals cold sores in 4 and one half days. In a clinical study of cold sore suffers, Denavir was the only medication proven to help cold sores disappear.