Brand : Acivir
Strength : 400mg
Ingredient : Acyclovir
Company Name : Cipla Ltd
Form : Tablet DT
Packing : Pack of 10x5 tablets
Acivir 400mg is also called as Acycloguanosine, which is belongs to antiviral medication. Acivir 400mg is a type of nucleoside analogs (group of synthetic drugs), will inhibit the symptoms of infection contains Herpes Simplex Virus (HSV), this infection will cause herpes simplex or type of herpes virus VZV (varicella-Zoster virus) and thereby causes shingles and chickenpox. Acivir 400mg is a prescription drugs administrated orally which is used under the supervision of medical practioners. Acivir 400mg is used with combination of other medications.
Acivir 400mg is used to reduce pain and fast healing of sores or blisters which is caused by varicella (chickenpox), Herpes Zoster. Acivir 400mg is also used for the treatment of herpes virus infection which causes sore to form around the genitals and rectum from time to time (genital herpes) and hence prevents the outbreaks of genital herpes in people affected by virus.
poorly water soluble, peak plasma concentration after 1-2 hours and bioavailability 15-30%.
plasma protein binding is ranging between 9 to 33%.
half life based according to age group neonates have t1/2 4 hours, children’s have 2-3 hours and for adults t1/2 3 hours.
Herpes simplex- mucocutaneous/ immunocompetent host :
For adult dose: 200mg orally every 4 hours or 5 times a day for 10 days. For 5 to 10 days 400mg orally 3 times a day is given.
For pediatric dose: less than 12 years 40 to 80mg/kg/day orally, it can be divided into 3 to 4 times a day, max 5 to 10 days Max dose up to 1000mg/day 12yrs or older: 200mg orally 5 times a day every 4 hours 400mg orally 3 times a day Duration: 7 – 10 days
Herpes simplex - mucocutaneous/ immunocompromised host :
For adult dose: 400mg orally 3 times a day
Duration: up to 5 to 10 days
Severe disease: 5mg/kg IV every 8 hours
Episodic treatment: 400mg orally 3 times a day upto 5 to 14 days
For pediatric dose: <12 years: 10 mg/kg IV for every 8 hours upto 7 days 12 years or older: 5 mg/kg IV for every 8 hours upto 7 days
continues HIV infection :
Mild Symptomatic Gingivostomatitis:20 mg/kg orally 4 times a day for 7 to 10 days ; Maximum dose: 400 mg Moderate to Severe Gingivostomatitis:5 to 10 mg/kg IV 3 times a day
Herpes Simplex Encephalitis :
For adult dose: 10mg/kg IV for every 8 hours
Duration: 10days and center for disease control and prevention recommends 21 days
For pediatric dose: 3 months to 12 years old : IV 10 to 20 mg/kg for every 8 hours
12 years or older: 10mg/kg IV every 8 hours
Duration: 10days and center for disease control and prevention recommends 21 days.
Herpes Zoster :
For adult dose: 800mg orally every 4 hours ( 5 times a day) for 7 to 10 days Immunocompromised host:10 mg/kg IV every 8 hours for 7 days Treatment Duration 7 to 14-day course (oral plus IV)
For pediatric dose: Immunocompetent Host: -Parenteral:
< 1 year: 10 mg/kg IV every 8 hours for 7 to 10 days 1 year or older: 500 mg/m2 IV every 8 hours for 7 to 10 days Oral: 12 years or older: 800 mg orally 5 times a day for 5 to 7 days
Immunocompromised Host: 10 mg/kg IV every 8 hours for 7 to 10 days
Acivir 400mg involving ingestion of 100 capsules ( 20g) have been reported has agitation, coma, seizures and lethargy
Acivir is stimulated by phosphorylation before to that drug will inhibits the viral DNA synthesis . Acivir converted by addition of phosphate group to a viral enzyme known as thymidine kinase has more affinity. HSV-TK or VZV-TK converts into acyclovir triphosphate by phosphorylation then fused into viral DNA, thereby stops further synthesis of DNA. Since Acivir attack to a selective type of viral kinase, the drugs enters and works on those cells infected with HSV or VZV, hence it will disorganize the formation of herpesvirus DNA At high concentration has less activity in uninfected cells, Therefore HSV-TK or VZV-TK mutation will leads resistance to acyclovir.
Acivir 400mg cause allgeric reaction like breathing trouble, swelling of throat or tongue, rash, hives. Inform your doctor if symptoms occurs. Discuss with your consultant about planning to become pregnant or pregnancy because drug can be used if possible benefits clarify possible risk to the patients. Discuss with doctor If you had kidney disease because the excretion of drug will not perform well, Acivir 400mg will decrease the kidney function.
When concomitant with probenecid will decrease tubular secretion of acyclovir and rise the blood plasma and half- life of acyclovir.
Concomitant use with nephrotoxic drugs may cause increase the risk in renal function.
Interact with immunostimulators will enhancing effects of acyclovir
Acivir is contraindicated in patients who causes hypersensitivity to acyclovir or valacyclovir.
immediately adminster the medicine as you remember.If next dose time reaches swap the missed dose and continue the regular schedule. avoid taking double dose at a time. Please consult the doctor for futher details.
Common side effects :
Weakness, Vomiting, Nausea, Diarrhea, Headache.
Serious side effects :
Unusal changes in mood like aggressive behavior, confusion, speaking trouble, hallucinations, seizures, Coma.
Reduced RBC and Platelets like fatigue :
Liver problems, Myalgia, Skin reaction like hair loss, rash, breaking or loosening of skin, hives, Changes in your vision, Kidney failure like flank pain, bloody urine.