What are the potential side effects of prolonged acyclovir use?

What side effects do people report most often?

Prolonged acyclovir use can produce kidney problems in some patients. Higher doses or low fluid intake raise the chance of crystal formation in the urine, which can lead to acute kidney injury. Patients who already have kidney disease need dose adjustments to avoid complications.

How do neurological symptoms appear?

Confusion, hallucinations, tremors, and seizures surface mainly in patients who keep high blood levels of the drug. This occurs when kidney function is impaired or when the patient is elderly. Symptoms often improve after stopping or lowering the dose.

What happens to blood counts during long-term treatment?

Long periods of acyclovir administration sometimes coincide with drops in white blood cells and platelets. Clinical reports link these changes to months or years of therapy. Routine blood tests help detect changes early.

Why does skin rash develop?

Allergic skin reactions range from simple rash to rare severe cases such as Stevens-Johnson syndrome. People who already have sensitivity to similar drugs should watch for skin changes and seek care if they widen or become severe.

Can acyclovir affect liver function?

Liver enzyme elevations appear in isolated cases. Monitoring liver tests shows occasional mild increases that usually return to normal once treatment stops.