Valtrex is a common antiviral used for cold sores, genital herpes, and shingles. It won’t cure a virus, but it helps symptoms clear faster and can lower how often outbreaks happen. Here’s a clear, practical rundown so you know when and how it’s used, what side effects to watch for, and smart tips if you plan to buy it online.
Doctors pick doses based on the infection. Common adult schedules are:
- Cold sores (herpes labialis): 2 g taken twice, 12 hours apart (single-day treatment).
- Genital herpes (initial outbreak): 1 g twice daily for 7–10 days.
- Genital herpes (recurrent): either 500 mg twice daily for 3 days or 1 g once daily for 5 days, depending on the situation.
- Suppressive therapy for frequent recurrences: 500 mg once daily or 1 g once daily, based on your doctor’s advice.
- Shingles (herpes zoster): 1 g three times daily for 7 days.
These are typical adult doses. Kids and people with kidney problems need different dosing. Always follow the exact instructions your prescriber gives. Don’t change the dose or stop early without checking with them.
Most people tolerate Valtrex well. Common side effects are headache, nausea, stomach pain, and dizziness. Rare but serious problems include kidney issues or confusion — especially in older adults or anyone with poor kidney function. Drink plenty of water while taking it and tell your doctor if you have kidney disease.
Watch for danger signs: sudden swelling, trouble breathing, skin blisters or severe rash, high fever with stiff neck, very fainting spells, or sudden confusion. If any of these happen, seek medical help right away.
If you’re on other meds, mention them. Drugs that affect kidney clearance (for example, probenecid) can change Valtrex levels. Also mention pregnancy or breastfeeding to your prescriber so they can weigh benefits and risks.
Want to buy Valtrex online? A few quick rules: pick a pharmacy that requires a prescription, shows clear contact info, and lists physical address and pharmacist details. Look for pharmacy verification seals in your country (for example, NABP/VIPPS in the U.S.). Compare prices but don’t buy from sites that sell prescription drugs without asking for a prescription — they may sell fake or unsafe meds. Generic valacyclovir is usually cheaper and works the same as brand Valtrex.
If you’re unsure about a site or a dose, call your doctor or local pharmacist. Using antivirals the right way gets better results and keeps you safe.
May, 4 2025
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