Acyclovir is an antiviral medication primarily used to treat infections caused by certain types of viruses, particularly the herpes simplex virus (HSV) and varicella-zoster virus (VZV). The 200 mg tablet formulation is commonly used for the treatment of cold sores, genital herpes, and shingles (herpes zoster).
Dosage Form:
- Strength: 200 mg per tablet
- Packaging: Available in packs of 10 tablets (often sold in multiples of 10).
Indications
Acyclovir is indicated for:
- Herpes Simplex Virus Infections: Treatment of initial and recurrent episodes of genital herpes and cold sores.
- Shingles (Herpes Zoster): Management of pain and discomfort associated with shingles.
- Prevention of Herpes Simplex Virus Infections: Particularly in immunocompromised patients.
Dosage
The typical adult dosage for Acyclovir 200 mg tablets is as follows:
- For Cold Sores: Take one tablet (200 mg) five times a day for 5 days, starting at the first sign of symptoms (tingling or itching).
- For Genital Herpes: The dosage may vary based on the severity and frequency of outbreaks; generally, it involves taking one tablet five times a day for a specified duration.
- For Shingles: The recommended dosage is one tablet (800 mg) taken five times daily for 7 to 10 days.
Warnings and Precautions
- Elderly Patients: May require dose adjustments due to potential kidney function impairment.
- Pregnant Women: Should use Acyclovir only if clearly needed; consult a healthcare provider before use.
- Children: Generally safe for children over 2 years; dosage should be adjusted based on weight and age.
Drug Interactions
Acyclovir may interact with other medications, particularly:
- Nephrotoxic Drugs: Increased risk of kidney damage when used with other medications that affect kidney function.
