Cymex ultra cream contains the active ingredient aciclovir, which is an antiviral medicine used to treat infections with the herpes virus. This cream is used to treat cold sores, which are caused by infection with the herpes simplex virus.
Aciclovir works by stopping the herpes simplex virus from reproducing and infecting more cells.
Aciclovir is converted to a more active form inside cells of the body that are infected with herpes simplex. The activated aciclovir works by blocking the action of a viral enzyme called DNA polymerase.
In order for the herpes virus to multiply and continue to survive, it uses the DNA polymerase enzyme to copy its genetic material from RNA to DNA. By blocking the action of DNA polymerase, aciclovir prevents the herpes virus from multiplying. This controls the infection and helps the immune system to deal with it.
This aciclovir cream is designed for the treatment of herpes simplex infections of the lips (cold sores). The cream should be applied thinly to the cold sore five times a day, at approximately four-hourly intervals, for five to ten days.
The cream is most effective if treatment is started as soon as the first signs of a cold sore (a tingling sensation), begin to appear, though treatment can also be started after the cold sore blister has appeared.
This medicine should not be used if you are allergic to one or any of its ingredients. Please inform your doctor or pharmacist if you have previously experienced such an allergy.If you feel you have experienced an allergic reaction, stop using this medicine and inform your doctor or pharmacist immediately.
Certain medicines should not be used during pregnancy or breastfeeding. However, other medicines may be safely used in pregnancy or breastfeeding providing the benefits to the mother outweigh the risks to the unborn baby. Always inform your doctor if you are pregnant or planning a pregnancy, before using any medicine.
Medicines and their possible side effects can affect individual people in different ways. The following are some of the side effects that are known to be associated with this medicine. Just because a side effect is stated here, it does not mean that all people using this medicine will experience that or any side effect.
The side effects listed above may not include all of the side effects reported by the medicine's manufacturer. For more information about any other possible risks associated with this medicine, please read the information provided with the medicine or consult your doctor or pharmacist.
This medicine is not known to affect other medicines.
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Aciclovir cold sore cream, cream, tablets, dispersible tablets and injection are also available as the generic medicine, ie without a brand name.