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 cold sores.
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).
The symptoms of strep throat include:
Sore throat that comes on rapidly
Fever, sometimes greater than 102 degrees Fahrenheit
A raw, red appearance to the back of the throat
White pus on tonsils
Tender, high lymph nodes in neck
Absence of a cough, stuffy nose, or other upper-respiratory symptoms
Although by definition strep throat is caused by the Streptococcus pyogenes bacteria,...
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.