Valacyclovir belongs to the class of medications known as antivirals. It is used to treat a viral infection affecting the skin known as shingles (herpes zoster). It is also used to treat cold sores, and to treat and prevent recurrences of genital herpes. It works by interfering with the way the virus reproduces. Valacyclovir works by stopping the virus from multiplying and spreading to nearby healthy cells. It does not cure shingles, cold sores, or genital herpes, but it does help the sores to heal more quickly, and it relieves pain and discomfort. When used to prevent recurrences of herpes, it also reduces the risk of transmission (spreading) of the infection to others. No matter what kind of medicine you take, whether OTC (over-the-counter) or prescription, it is destined to take a trip through your kidneys. Taking a drug the wrong way or in excessive amounts can damage these vital, bean-shaped organs and lead to serious complications. In the worst-case scenario, it could necessitate a kidney transplant.“Compared with 30 years ago, patients today…have a higher incidence of diabetes and cardiovascular disease, take multiple medications, and are exposed to more diagnostic and therapeutic procedures with the potential to harm kidney function,” according to Cynthia A. Naughton, Pharm D, senior associate dean and associate professor in the department of pharmacy practice at North Dakota State University. All of these factors are associated with an elevated risk of kidney damage. An estimated 20% of cases of acute kidney failure are due to medications. The technical term for this scenario is “nephrotoxicity,” which is growing more common as the aging population grows, along with rates of various diseases.
Detailed drug Information for Valtrex. Includes common brand names, drug descriptions, warnings, side effects and dosing information. It is used to treat shingles caused by herpes zoster, genital herpes, and cold sores. and ask your doctor or pharmacist to explain any part you do not understand. stomach pain; joint pain; headache; constipation; vomiting; cold symptoms.