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Acyclovir Tablets

Function and Efficacy

This product is an antiviral drug. It has inhibitory effects on herpes simplex virus, varicella zoster virus, cytomegalovirus, etc. in vitro. After entering the cells infected with herpes virus, this product competes with deoxynucleoside for viral thymidine kinase or cellular kinase, and the drug is phosphorylated into activated acyclovir triphosphate, which then inhibits viral replication in two ways: ① Interfering with viral DNA polymerase and inhibiting viral replication; ② Under the action of DNA polymerase, it binds to the growing DNA chain, causing the extension of the DNA chain to be interrupted. This product has a special affinity for viruses, but has low toxicity to mammalian host cells. There are reports of carcinogenicity in in vitro cell transformation assays, but no evidence of carcinogenicity has been found in animal experiments. Some animal experiments show that high concentrations of drugs can cause mutations, but there is no evidence of chromosomal changes. Carcinogenicity of this product

Ingredients

The main ingredient of this product is acyclovir, and its chemical name is: 9-[(2-hydroxyethoxy)methyl]guanine

Name Description Content CAS NO. Manufacturer
AcyclovirIngredients

This product is an antiviral drug. It has an inhibitory effect on herpes simplex virus, varicella zoster virus, cytomegalovirus, etc. in vitro. After entering the cells infected by herpes virus, this product competes with deoxynucleoside for viral thymidine kinase or cell kinase, and the drug is phosphorylated into activated acyclovir triphosphate, and then inhibits viral replication in two ways: ① Interfering with viral DNA polymerase and inhibiting viral replication; ② Under the action of DNA polymerase, it binds to the growing DNA chain, causing the extension of the DNA chain to be interrupted. This product has a special affinity for viruses, but has low toxicity to mammalian host cells.

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Appearance

This product is white tablets.

Indication

This product is suitable for: 1 Herpes simplex virus infection: used for the initial and recurrent cases of genital herpes virus infection, and for the prevention of recurrent cases. 2 Herpes zoster: used for the treatment of herpes zoster in people with normal immune function and mild cases in people with immune deficiency. 3 The treatment of chickenpox in people with immune deficiency.

Usage and Dosage

Oral 1. Genital herpes for the first time and mucous membrane herpes simplex in immunocompromised patients: The usual dose for adults is 0.2g once, 5 times a day, for 10 days; or 0.4g once, 3 times a day, for 5 days; for recurrent infection, 0.2g once, 5 times a day, for 5 days; for chronic suppressive therapy of recurrent infection, 0.2g once, 3 times a day, for 6 months, and if necessary, the dose can be increased to 5 times a day, 0.2g once, for 6 to 12 months. 2. Herpes zoster: The usual dose for adults is 0.8g once, 5 times a day, for 7 to 10 days. 3. Adult patients with renal insufficiency should adjust the dose according to the table below; 4. Varicella: Children over 2 years old should take 20m once according to body weight.

Adverse Reactions

Occasionally, dizziness, headache, joint pain, nausea, vomiting, diarrhea, stomach discomfort, loss of appetite, thirst, leukocytopenia, slight increase in proteinuria and urea nitrogen, skin itching, etc. may occur. Acne, insomnia, and menstrual disorders may occur occasionally with long-term administration.

Precautions

It is contraindicated in patients who are allergic to acyclovir.

Special Population Medication

Precautions for children: The dosage for children under 2 years old has not been determined. Precautions for pregnancy and lactation: The drug can pass through the placenta. Although animal experiments have confirmed that it has no effect on the embryo, pregnant women still need to weigh the pros and cons of using the drug. The concentration of the drug in breast milk is 0.6 to 4.1 times the blood concentration. Although no abnormalities have been found in infants, breastfeeding women should use it with caution. Precautions for the elderly: Due to the decline of physiological renal function, the dosage and medication interval of this product need to be adjusted.

Drug Interactions

1. Combination with zidovudine can cause nephrotoxicity, manifested as deep lethargy and fatigue. 2. Competitive inhibition of organic acid secretion with probenecid. Combination with probenecid can slow down the excretion of this product, prolong the half-life, and accumulate the drug in the body.

Storage

Sealed and stored in a cool place.

Packaging Specification

0.1g

Validity Period

36 months

Manufacturer

Jincheng Haisi Pharmaceutical Co., Ltd.

  • Founded in:

    1997-12-30
  • Address:

    Wangtai, Jincheng City, Shanxi Province
  • Tax NO.:

    91140500111208832X
  • Registered Funds:

    148.512131 yuan
  • Email:

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