Acyclovir (Zovirax) Tablets
What is Acyclovir used for?
Starting acyclovir promptly when tingling sensation first appears is very important, because the medication works only during active viral replication.
Acyclovir is NOT an antibiotic and is used to treat only Herpesvirus infections.
Pregnancy category: B. Extensive experience with acyclovir supports its safety in pregnancy and lactation.
Prolonged use: Long-term use of acyclovir is not associated with serious side effects or cumulative toxicity2.
Persons with renal impairment should be monitored carefully. Acyclovir can crystallize in the renal tubules, leading to a creatinine elevation.
Major drug interactions
No significant drug interactions have been reported3. You can take acyclovir with most of commonly used medications, including antibiotics, NSAIDs (e.g. ibuprofen, naproxen), benadryl.
Acyclovir and alcohol
Alcohol does NOT interact with acyclovir and does NOT decrease its effectiveness3.
How fast does Acyclovir work?
How quickly does Acyclovir work for herpes (HSV-1, HSV-2)?
Acyclovir works relatively quickly. However, as its main benefit is an acceleration of the healing and disruption of the HSV replication, you will NOT experience rapid improvement in severity of symptoms.
When used for an acute herpes outbreak, acyclovir shortens the duration of an outbreak by approximately 2 days, time to complete healing of lesions, and reduces viral shedding4. So, you should notice dramatic benefits on fourth day of proper treatment. Most favourable results are achieved when acyclovir is started early at the onset of prodromal symptoms.
Keep in mind: Zovirax cream, unlike oral tablets, can be started at any stage of an outbreak.
How quickly does Acyclovir work for shingles?
Most people experience alleviation of pain and less frequent formation of new lesions after three days of treatment5.
Is Acyclovir as good as Valtrex?
Valtrex costs more but does it work better than acyclovir?
Valacyclovir and acyclovir are equally effective and safe in herpes simplex virus infections1. The primary difference is how often you need to take them.
In the treatment of herpes zoster valacyclovir is superior to acyclovir.
Last updated: September, 2015
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