Fever blisters are a physical manifestation of the herpes simplex virus, a common virus that affects the majority of the population. Although for the most part the virus remains dormant, stress, illness and even exposure to sunlight can trigger an outbreak. An eruption usually lasts for approximately seven days, and will normally heal on its own without intervention. While there is no cure for herpes simplex virus, treatments are available that will help to speed healing and possibly reduce the frequency of outbreaks.
Lysine
Lysine is an essential amino acid that may help to suppress cold sores and shorten the duration of the outbreak, according to University of Maryland Medical Center. Although the body does not produce lysine, adequate levels are available in proteins such as chicken, eggs and fish. Lysine supplements are also available in tablet, liquid or tincture form. Because lysine may raise cholesterol and triglyceride levels, people with heart disease should consult with a medical doctor before taking a supplement.
Home Care
Topical applications such as lidocaine or xylocaine are sometimes recommended to alleviate pain, states the UMMC. Over-the-counter preparations such as Viractin, Blistex or Campho-Phenique will help to keep the blister moist and provide temporary pain relief. The antiviral and antifungal properties of honey may also help to soothe the inflammation and speed healing time.
Oral Therapy
Valacyclovir hydrochloride, brand name Valtrex, is a single dose, oral medication that may reduce the healing time of a herpes outbreak. Available by prescription only, Valtrex is contraindicated for people with a compromised immune system, according to Valtrex.com. Frequently reported side effects include nausea, headache and vomiting. To avoid the possibility of an interaction with other drugs, it is important to give your medical care provider a complete of current medications.
Antiviral Medications
Denavir and Zovirax are antiviral prescription medications approved by the FDA to treat fever blisters and cold sores. According to the manufacturers' claims, both creams shorten healing time and inhibit replication of the herpes virus. For optimal benefit, Deniver should be applied five times each day for four days. Zovirax requires an application every other hour, according to the Herpes Diagnosis website.
