Only if the sinus infection is viral in nature (extremely unlikely). It is almost 100% likely it is bacterial so you need an antibiotic. An ant-viral will be as effective as praying to a full moon.
- Valacyclovir Information for Consumers
- Valacyclovir Information for Healthcare Professionals (includes dosage details)
- Side Effects of Valacyclovir (detailed)
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.