 
                                    
                                                                        A side‑by‑side look at Zovirax (acyclovir) versus valacyclovir, famciclovir and penciclovir, covering how they work, dosing, cost and safety to help you choose the right antiviral.
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                                                                        A detailed side‑by‑side comparison of Aciclovir, Valacyclovir, Famciclovir and penciclovir, covering efficacy, safety, dosing, cost and how to choose the right antiviral.
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