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Cold sores are usually caused by a virus (Type 1). Viruses operate by taking over the living cells in our bodies and actually reproducing themselves, at the expense of the host cell. This is how they wreak havoc inside our bodies, manifesting even on the outside as is the case with cold sores. Herpes Simplex Types 1 and 2 cause cold sores and genital herpes respectively, Varicella Zoster causes Chickenpox and Shingles and the Epstein-Barr virus is responsible for Mononucleosis. The antiviral drug, Zovirax (Acyclovir), plays an aggressive and active role against herpetic viruses mentioned above.


Treating an oral outbreak is key to speedy healing. At the very first little sensation and tingling, start treatment immediately, since the sore will blister soon. Zovirax is also the only cold sore medicated cream that effectively treats cold sores. The cream contains the compound-MAC-P, an absorptive accelerant that penetrates deeply into the area of the skin and is roughly five times faster than other treatments. This way, Acyclovir, the active ingredient in Zovirax rapidly, and effectively gets to the site of the infection for faster healing.

To this end, Zovirax can be a first step in efficiently treating and healing cold sores. Especially when you need a rapid heal for an occasion and so as to prevent the virus from spreading. The medication also comes new invisible seal patches, which mask the sore while it heals. If applied at the very first tingle, redness, bump, or itch, the medication can help prevent the development of as well as speed the recovery and healing process.

Zovirax, can also be used to treat cold sores on the face or lips that are usually caused by the Herpes Simplex Type II Virus. The medication is also used for a different conditions. The cream works by inhibiting or stopping the replication of the virus. That said however, it is important to note that the medication cannot, does not, and will not eliminate the virus. Rather, the virus will lie dormant in your system, until it is triggered by usually a stressor such as a very stressful situation, which could include but not limited to: pressures and stress from work, studying for exams, the cold weather, pregnancy, the loss of a loved one, divorce, financial and other stressful circumstances.

It is important to remember the medication is not a cure and because it does not prevent the passing on or transmission of the virus to others, it is important to pay attention to even subtle signs of an outbreak and take necessary precautions. Keeping stress to a minimum, eating properly, and getting plenty of rest will also help to minimize your outbreaks.


Since some medical conditions and medicines can interact with Zovirax, the medication should not be used if you are allergic to its active or other ingredient(s) in the medication. Therefore, unless you have been prescribed the medication; even if you are tempted to use a tube from the medicine cabinet that was prescribed to someone else, speak to your doctor first.

Also, communicate any medical conditions including pregnancy, if you are breastfeeding, or if you are even planning to become pregnant, if you are taking any prescription or non-prescription drugs, herbal supplements, or any special diets. It is important to disclose any allergies if applicable to anything including foods, drinks, medicines and other chemical and substances.

Although very little (if at all) of the cream gets absorbed into the skin, as you know, some medication may interact with others - Zovirax is no exception, and one can never say for certain what will happen, since our bodies will react differently to medications and other things. Therefore, even with the low risk of absorption, never risk being in that small percentage, or statistics. Check with your primary health care before you take, change the dose, or stop taking a prescribed medication.

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