Most cold sores heal on their own without prescription medicines. But some antiviral medicines (such as acyclovir or famciclovir) when taken orally (tablets) may
be helpful in reducing the frequency and severity of attacks of
Doctors may prescribe oral antiviral medicines that
can be taken daily to prevent future outbreaks of cold sores. These medicines
may also be given during periods of increased risk of getting cold sores
(such as during cosmetic surgery or sun exposure).
You probably don't often think of dentistry and sports in the same breath, but Oakland, Calif.-based dentist Eric Yabu, DDS, certainly does. Yabu does double duty as team dentist for the sports medicine program at the University of California, Berkeley, where he's tasked with making custom mouth guards for the athletes as well as providing emergency care. Away from the playing field, Yabu, who is also an assistant clinical professor at the University of California, San Francisco, sees patients of...
A lower dose of oral acyclovir is needed for people who have
reduced kidney function.
Famciclovir (Famvir) is sometimes used to treat the herpes virus that causes
cold sores and genital herpes (as well as the virus that causes shingles). This medicine is available only by
prescription and is taken orally in tablet form.
If you are pregnant or nursing, you should talk with your doctor
before taking famciclovir.
This medicine is not recommended for people who have had an
allergic reaction to it in the past.