what is difference between acyclovir and valacyclovir?
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Valacyclovir (Valtrex) and acyclovir (Zovirax) are antiviral drugs that work by interfering with viral DNA replication. Both drugs target the same viruses but valacyclovir provides longer duration of action, therefore, doses can be taken fewer times every day - this is the only real advantage.
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This means that a single dose of valacyclovir, after conversion into acyclovir by your body, will reduce in concentration every 2.5 to 3.3 hours, staying in your system for a total of about 22 to 25 hours before it's completely excreted.
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Valcyte (valganciclovir): What's the difference? Valtrex (valacyclovir) and Valcyte (valganciclovir) are antiviral drugs used to treat different conditions. Valtrex is used to treat infections with shingles (herpes zoster), genital herpes (herpes simplex genitalis), and cold sores (herpes labialis).
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The antiviral medicines available for treatment include acyclovir (Zovirax), famciclovir (Famvir), and valacyclovir (Valtrex). These oral medications are more effective when started within the first 48 hours of the outbreak.
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Aciclovir 800 mg tablets are capsule shaped biconvex uncoated white to off-white tablets with "800” debossed on one side and "ACV” on the other side. Aciclovir Tablets are available in packs of 35, 60 and 100 tablets.
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Keeping the infected area clean and dry. Taking antiviral oral medications, such as acyclovir, famciclovir and valacyclovir (these medications are traditionally the most effective) Applying antiviral topical ointments, such as acyclovir and penciclovir.
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For most initial herpes outbreaks and cases of recurring herpes, valacyclovir takes effect very quickly and provides some level of relief in as little as two to three days. Generally, the sooner you take valacyclovir after noticing symptoms, the faster it will be to provide relief.
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Valtrex (valacyclovir) is an antiviral drug. It slows the growth and spread of the herpes virus to help the body fight the infection. Valtrex is used to treat infections caused by herpes viruses, including genital herpes, cold sores, and shingles (herpes zoster) in adults.
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Treating Shingles Several antiviral medicines—acyclovir, valacyclovir, and famciclovir—are available to treat shingles and shorten the length and severity of the illness. These medicines are most effective if you start taking them as soon as possible after the rash appears.
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Apo Acyclovir 400mg tablet. This medication is typically used for genital herpes or for the prevention of cold sores (herpes labialis). It may also have other uses. It requires several days to take effect.
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Acyclovir works best when started within 48 hours of symptom onset. In herpes zoster (shingles) infections, acyclovir shortened the time it took lesions to scab over and decreased the time needed for the rash to heal and become pain-free.
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The drugs used for viral infection are Acyclovir (Zovirax), famciclovir (Famvir), and valacyclovir (Valtrex) are effective against herpesvirus, including herpes zoster and herpes genitalis. Drugs used for treatment for viral fever are Acetaminophen(Tylenolothers)ibuprofen (Advil,motrin IB others).
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Conclusion: Valacyclovir appear to be somewhat better than famciclovir for suppression of genital herpes and associated shedding. Further comparative trials of antiviral drugs for various indications should be performed as acyclovir and penciclovir appear to have different ability to abrogate HSV reactivation.
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Acyclovir is an antiviral used for treating herpes outbreaks in humans. However, it is toxic to cats and should be avoided. Famciclovir is relatively safe in cats and can be used at a dose of 40 to 90 mg/kg orally every 8 to 12 hours.
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The antiviral medicines available for treatment include acyclovir (Zovirax), famciclovir (Famvir), and valacyclovir (Valtrex).
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Several antiviral medicines—acyclovir, valacyclovir, and famciclovir—are available to treat shingles and shorten the length and severity of the illness. These medicines are most effective if you start taking them as soon as possible after the rash appears.
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The U.S. Food and Drug Administration considers acyclovir, valacyclovir, and famciclovir category B drugs in pregnancy, but there are few data on early pregnancy exposure. Pasternak and Hviid investigated the risk of major birth defects in the infants of mothers who took antiviral medication in their first trimester.