What is Centrex 1000 mg (Valacyclovir) Tablet?
Centrex 1000 mg is an antiviral tablet containing Valacyclovir 1000 mg, used to treat infections caused by the herpes virus.
Doctors prescribe Centrex tablets for Genital herpes, Cold sores (herpes labialis), Shingles (herpes zoster) in adults and Chickenpox.
Valacyclovir works by slowing the growth and spread of the herpes virus, allowing your immune system to control the infection more effectively. It does not cure herpes, but it helps reduce the severity, duration, and frequency of outbreaks, and lowers the risk of transmission when used as prescribed. Centurion Laboratories Pvt. Ltd., a well-known pharma company, manufactures Centrex tablets. Centrex 1000 mg is a prescription-only antiviral, and you should strictly use it under medical supervision.
How Does Centrex 1000 mg (Valacyclovir) Work?
Centrex 1000 mg contains Valacyclovir, a prodrug that is rapidly converted in the body to Acyclovir, its active antiviral form. Acyclovir is a synthetic nucleoside analogue that specifically targets virus-infected cells. It works by blocking viral DNA polymerase, the enzyme needed for the herpes virus to copy its genetic material and multiply. When the virus cannot replicate its DNA properly, it stops spreading and gradually becomes inactive.
How to Take Centrex 1000 mg Tablet?
Swallow the Centrex tablet whole with a glass of water and do not crush, chew, or break it while taking it.
You can take it with or without food, and if it upsets your stomach, taking it with food may help.
Your doctor will decide the dose, frequency, and duration based on:
- Type of infection (cold sores, genital herpes, shingles, Chickenpox)
- Whether it is a first episode or a recurrent infection
- Your age, weight, kidney function, and overall health
For best results, start Centrex 1000 mg as soon as you notice the first symptoms (tingling, burning, itching, or redness) and complete the full course, even if you feel better earlier.
Possible Side Effects of Centrex 1000 mg (Valacyclovir)
Most side effects are mild and temporary, improving as your body adjusts to the medicine. Common side effects include:
- Headache
- Dizziness
- Nausea or vomiting
- Stomach pain or discomfort
- Diarrhea
- Feeling unusually tired or weak
Stop the medicine and contact your doctor if you notice any of the serious symptoms above.
Precautions and Safety Advice related to Centrex 100 mg:
Do not use Centrex 1000 mg if you are allergic to Valacyclovir, Acyclovir, or any component of the tablet.
Inform your doctor if you have:
- Kidney disease or reduced kidney function
- History of kidney stones or dehydration
- Weak immune system (HIV, transplant, chemotherapy, long-term steroids)
- History of neurological issues, such as seizures or mental confusion
Drink plenty of fluids while on Valacyclovir to help protect your kidneys.
Elderly patients should use this medicine with extra caution, as they are more prone to confusion and kidney-related side effects.
Pregnant or breastfeeding women should use Centrex 1000 mg only if clearly prescribed by their doctor.
Avoid driving or operating heavy machinery if you feel dizzy, confused, or unusually tired after taking the tablet.
Centrex 1000 mg helps control herpes but does not cure it. Avoid sexual contact during active outbreaks and use protection to reduce the risk of transmission.
Available Strengths of Centrex 1000 mg:
You can also order Valacyclovir in a lower strength than 1000 mg as-
Storage Instructions for Centrex 1000 mg:
Store Centrex 1000 mg tablets at room temperature, away from excess heat and moisture. Keep the blister pack tightly closed and away from direct sunlight and also away from the reach of children and pets.
Where to Buy Centrex 1000 mg Online
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