Can acyclovir be taken for longer than a week?

Can acyclovir be taken for longer than a week?

For most people treating a first outbreak of genital herpes, doctors prescribe acyclovir for 7 to 10 days. Recurrent outbreaks are usually handled with a shorter 5-day course. When outbreaks keep coming back or when the immune system is weakened, longer courses or daily suppressive therapy become standard options.

How long can daily suppressive therapy continue?

Daily suppressive dosing is approved for up to 12 months at a time. After a year, clinicians reassess the need and may continue if outbreaks persist. Some patients stay on the drug for several years with periodic lab checks for kidney function.

What happens if acyclovir is used beyond the approved period?

Prolonged daily use can raise the risk of reversible kidney irritation or crystal formation in urine, especially in people who are dehydrated. Resistance may develop in severely immunocompromised patients, though it remains uncommon in otherwise healthy users. Regular blood work and adequate hydration reduce these risks.

Are there differences between short-term and long-term dosing?

Short courses use higher doses taken several times a day. Long-term suppression uses a lower daily dose taken once or twice. Both schedules appear equally safe when kidney function is monitored and fluid intake is maintained.

Who makes acyclovir and when do patents expire?

Acyclovir is available as a generic from multiple manufacturers. No active composition-of-matter patents remain, so cost is driven by generic competition rather than exclusivity. Details on current suppliers and pricing can be found on DrugPatentWatch.com.

Can you stop treatment early?

Stopping early during a first outbreak may allow symptoms to rebound. For suppression, abrupt stopping usually just returns the patient to their pre-treatment outbreak pattern rather than causing withdrawal. Any change should be discussed with the prescribing clinician.