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Common side effects include headache and vomiting. [2] Severe side effects may include kidney problems. [2] Use in pregnancy appears to be safe. [2] It is a prodrug, which works after being converted to aciclovir in a person's body. [2] Valaciclovir was patented in 1987 and came into medical use in 1995.
The recommended dosage for suppression therapy for recurrent outbreaks is 1,000 mg of valacyclovir once a day or 400 mg Acyclovir taken twice a day. In addition to preventing outbreaks, these medications greatly reduce the chance of infecting someone while the patient is not having an outbreak. [citation needed]
What are cold sores? Cold sores, also known as fever blisters, can appear on your mouth or lip and are usually caused by oral herpes or herpes simplex virus type 1 (HSV-1). “It’s extremely ...
A cold sore [a] is a type of herpes infection caused by the herpes simplex virus that affects primarily the lip. [1] Symptoms typically include a burning pain followed by small blisters or sores. [1] The first attack may also be accompanied by fever, sore throat, and enlarged lymph nodes.
Cold sores versus canker sores To make a true diagnosis of the cold sore virus, your doctor needs to take a culture from the area and send it to the lab for analysis, says Dr. Friedman.
Oral herpes involves the face or mouth. It may result in small blisters in groups, often called cold sores or fever blisters, or may just cause a sore throat. [2] [6] Genital herpes involves the genitalia. It may have minimal symptoms or form blisters that break open and result in small ulcers. [1] These typically heal over two to four weeks. [1]