Valovir 1 gm is a potent antiviral medication designed to treat infections caused by Herpes simplex and Varicella-zoster viruses. It is the hydrochloride salt of L-valyl ester of acyclovir, which improves oral absorption and provides effective systemic antiviral activity. Valovir works by slowing the replication of the virus, allowing the body’s immune system to control the infection, reduce symptoms, and shorten the duration of illness.

Valovir is indicated for herpes zoster (shingles), genital herpes, and cold sores (herpes labialis). It is also used for suppressive therapy in recurrent genital herpes, including in HIV-infected patients. With high bioavailability, Valovir ensures rapid antiviral action and convenient oral administration.

রেজিস্টার্ড চিকিৎসকের পরামর্শ অনুযায়ী ঔষধ সেবন করুন

Therapeutic Class

Herpes Simplex & Varicella-Zoster Virus Infections

Indications

Valovir 1 gm is indicated for:

• Herpes Zoster (Shingles): Rapidly reduces viral replication and accelerates healing

• Genital Herpes:

  • Initial episode: Treats infection effectively

  • Recurrent episodes: Shortens symptom duration

  • Suppressive therapy: Reduces frequency of recurrences in immunocompetent and HIV-infected patients

• Cold Sores (Herpes Labialis): Reduces healing time and severity of outbreaks

Pharmacology

Valovir 1 gm is converted in the body to acyclovir, which selectively inhibits viral DNA polymerase, blocking viral replication. This limits the spread of the virus to healthy cells and reduces the severity and duration of symptoms.

Key pharmacokinetic points:

• Rapidly absorbed from the gastrointestinal tract

• Converted to active acyclovir in the liver and intestines

• Excreted primarily via the kidneys

• Peak plasma levels are achieved within 1–2 hours of oral administration

Dosage and Administration

Adults:

• Cold Sores: 2 grams every 12 hours for 1 day

• Genital Herpes:

  • Initial episode: 1 gram twice daily for 10 days

  • Recurrent episode: 500 mg twice daily for 3 days

  • Suppressive therapy:

    • Immunocompetent: 1 gram once daily or 500 mg once daily for < 9 recurrences/year

    • HIV-infected: 500 mg twice daily

• Herpes Zoster: 1 gram three times daily for 7 days

Pediatric Patients:

• Cold sores (>12 years): 2 grams every 12 hours for 1 day

• Chickenpox (2–18 years): 20 mg/kg three times daily for 5 days (max 1 gram three times daily)

Administration Tips:

• Take with or without food

• Maintain adequate hydration to prevent kidney complications

  রেজিস্টার্ড চিকিৎসকের পরামর্শ অনুযায়ী ঔষধ সেবন করুন

Interactions

• No dose adjustments are required when coadministered with digoxin, antacids, thiazide diuretics, cimetidine, or probenecid in patients with normal renal function

Contraindications

• Known hypersensitivity to Valovir, acyclovir, or any excipient in the formulation

Side Effects

Common side effects include:

• Nausea (15%)

• Headache (14%)

• Vomiting (6%)

• Dizziness (3%)

• Abdominal pain (3%)

Most side effects are mild and transient.

Precautions & Warnings

• Dose adjustment is recommended for renal impairment

• Exercise caution in elderly patients or those receiving nephrotoxic drugs

• Safety and efficacy in pre-pubertal children are not established

• Use with caution in immunocompromised patients, except for HIV-related suppressive therapy

Pregnancy & Lactation

• Pregnancy Category B: No evidence of teratogenicity in animal studies

• Use only if clearly indicated in pregnant women

• Nursing mothers: Valovir is generally safe, but should be used with caution

Storage

• Store in a cool, dry place, protected from light

• Keep out of reach of children

Mode of Action

Valovir is converted to acyclovir in the body, which inhibits viral DNA replication, slowing the spread of herpes viruses and allowing the immune system to eliminate the infection. This results in reduced symptoms, faster healing, and suppression of recurrent outbreaks.