The Valacyclovir is an inhibitor of DNA polymerase , the enzyme responsible for DNA synthesis. Its action is very specific against type 1 and type 2 herpes simplex virus and varicella zoster virus , which prevents reproduction by blocking DNA replication.
What is Valaciclovir used for?
The Valacyclovir is used to treat herpes infections , particularly shingles , the ‘ genital herpes and the’ cold sores . It does not cure the infection, but helps to reduce pain and itching, promotes healing of the blisters and prevents the formation of new blisters.
How is Valaciclovir taken?
Valaciclovir is taken orally in the form of tablets. The duration of treatment depends on the infection.
Typically the shingles requires assuming 3 doses per day for 7 consecutive days , while the treatment of ‘ genital herpes typically involves the intake of 2 tablets per day for 5 days . However, posology and duration of administration may vary from case to case.
Side effects of Valaciclovir
Possible side effects of Valaciclovir include headache , stomach upset, vomiting, diarrhea or loose stools and constipation.
Allergic reactions are not to be excluded : it is important to seek medical attention immediately in case of rashes, itching , confusion, yellowing of the skin, fever or blood in the urine.
Contraindications and warnings on the use of Valaciclovir
Before taking Valaciclovir it is important to tell your doctor:
- of any allergy to the active ingredient, acyclovir (Zovirax) or some other drug;
- which medicines you are taking, especially if it is Cimetidine, Probenecid or vitamins;
- if you suffer (or have suffered) from kidney or liver disease or problems involving the immune system (including an HIV infection);
- if you are pregnant or breastfeeding .